From sbriggs at ucar.edu  Fri Apr  7 15:41:06 2023
From: sbriggs at ucar.edu (Scott Briggs)
Date: Fri, 7 Apr 2023 15:41:06 -0600
Subject: [Grad-postdoc-assn] Fwd: ATOC Distinguished Lecture by Dr. Amy
 Clement on April 10
In-Reply-To: <CA+UHVUyDyFTzwAXrYTdkAeHiZvit1Qz_0xX48V9iZc-FoCjPCw@mail.gmail.com>
References: <CA+UHVUzu+3Szn7C9W3qD2oSE9k_-J0aff+daiMPAXoZKz8agXQ@mail.gmail.com>
 <CA+UHVUyDyFTzwAXrYTdkAeHiZvit1Qz_0xX48V9iZc-FoCjPCw@mail.gmail.com>
Message-ID: <CAHkSu_eSsNfsZVw-g6yJRXyuPf+icp9aTh35bq7fraHaH7_aWg@mail.gmail.com>

FYI

---------- Forwarded message ---------
From: Julia M. Moriarty <Julia.Moriarty at colorado.edu>
Date: Fri, Apr 7, 2023 at 3:01?PM
Subject: Re: ATOC Distinguished Lecture by Dr. Amy Clement on April 10
To: ATOC Faculty <atoc-faculty at lists.colorado.edu>, <
atoc-researchers at lists.colorado.edu>, <atoc-students at lists.colorado.edu>, <
atoc-majors at lists.colorado.edu>, <Atoc-minors at lists.colorado.edu>, <
atoc-colloquium at lists.colorado.edu>
Cc: Sara Sanchez <sara.sanchez at colorado.edu>, Chris Wyburn Powell <
chwy8767 at colorado.edu>


*Hi all, *


*A reminder that **Dr. Amy Clement's lecture, titled "Recent Atlantic
Multidecadal Variability is Mostly Forced", **will be on Monday, April 10
in SEEC S228, from 10:30 - 11:30 am, and on zoom (see link at end of the
forwarded email below).*


*The ATOC Fest and Distinguished Lecture Committee*

*(Julia, Sara, and Chris)*





On Sun, Apr 2, 2023 at 10:35?AM Julia M. Moriarty <
Julia.Moriarty at colorado.edu> wrote:

> We are excited to announce the Spring 2023 ATOC Distinguished Lecture.  *The
> lecture will be on Monday, April 10 in SEEC S228, from 10:30 - 11:30 am,
> and on zoom (see link at end of email).*
>
>
>
> *Dr. Amy Clement's will be titled "Recent Atlantic Multidecadal
> Variability is Mostly Forced".  *More information about Dr. Clement can
> be found at this link
> <https://people.miami.edu/profile/b395dd6dac6f22cb1fefde66b8cef6f2> .
>
>
>
> *Co-authors: Chengfei He, Mark Cane, Sydney Kramer, Jeremy Klavans, Lisa
> Murphy, and Tyler Fenske*
>
> * Abstract:*
>
> *How much of regional climate variability is due to anthropogenic
> forcing?  It is a question of both time and space scales. On interannual
> timescales and local spatial scales, most of the variability is presumably
> internal; on global, centennial timescales, it is mostly forced. Then we
> are left with this large grey area of regional, decadal-to-multidecadal
> variability, where the relative magnitude of the internal and forced
> components is not known. *
>
>
>
> *In this paper, we dive into the question of the relative contributions of
> internal ?noise? and externally forced ?signal? to the AMV. To do this we
> use a hierarchy of climate models including simple heuristic models,
> idealized dynamical models, comprehensive earth system models, and variants
> of earth system models with physical processes disabled. These models are
> put to the experimental test of simulating observations using large
> ensembles with historical and future forcing, which allows us to formally
> define the signal to noise ratio. We show that prior to 1950, the AMV is
> largely consistent with variability arising from coupling between the ocean
> and atmosphere internal to the climate system. However, after 1950, the
> AMV, its impacts, and the relationship between the two is largely forced. *
>
>
>
> *We will further discuss the implications of these results more broadly in
> the context of interpreting ?signal? and ?noise? in large-scale modes of
> variability in both climate models and observations. *
>
>
>
>
>
> Cheers,
>
> ATOC's Fest and Distinguished Lecture Committee
>
> (Julia Moriarty, Sara Sanchez, and Chris Wyburn Powell)
>
>
> ----------------------- Zoom Link
> -----------------------------------------------------
>
> Julia Moriarty is inviting you to a scheduled Zoom meeting.
>
> Topic: ATOC Distinguished Lecture
>
>
>
> *Join Zoom Meetinghttps://cuboulder.zoom.us/j/93526110409
> <https://cuboulder.zoom.us/j/93526110409>Passcode: ATOC*
>
> Meeting ID: 935 2611 0409
> Passcode: ATOC
> One tap mobile
> +16469313860,,93526110409# US
> +13017158592,,93526110409# US (Washington DC)
>
> Dial by your location
>         +1 646 931 3860 US
>         +1 301 715 8592 US (Washington DC)
>         +1 305 224 1968 US
>         +1 309 205 3325 US
>         +1 312 626 6799 US (Chicago)
>         +1 646 558 8656 US (New York)
>         +1 507 473 4847 US
>         +1 564 217 2000 US
>         +1 669 444 9171 US
>         +1 669 900 6833 US (San Jose)
>         +1 689 278 1000 US
>         +1 719 359 4580 US
>         +1 253 205 0468 US
>         +1 253 215 8782 US (Tacoma)
>         +1 346 248 7799 US (Houston)
>         +1 360 209 5623 US
>         +1 386 347 5053 US
> Meeting ID: 935 2611 0409
> Find your local number: https://cuboulder.zoom.us/u/aeBD70Gx3C
>
> Join by SIP
> 93526110409 at zoomcrc.com
>
> Join by H.323
> 162.255.37.11 (US West)
> 162.255.36.11 (US East)
> 115.114.131.7 (India Mumbai)
> 115.114.115.7 (India Hyderabad)
> 213.19.144.110 (Amsterdam Netherlands)
> 213.244.140.110 (Germany)
> 103.122.166.55 (Australia Sydney)
> 103.122.167.55 (Australia Melbourne)
> 149.137.40.110 (Singapore)
> 64.211.144.160 (Brazil)
> 149.137.68.253 (Mexico)
> 69.174.57.160 (Canada Toronto)
> 65.39.152.160 (Canada Vancouver)
> 207.226.132.110 (Japan Tokyo)
> 149.137.24.110 (Japan Osaka)
> Meeting ID: 935 2611 0409
> Passcode: 470790
>
>
> --
> Julia M. Moriarty
> Assistant Professor, University of Colorado Boulder
> Department of Atmospheric and Oceanic Sciences (ATOC) & Institute for
> Arctic and Alpine Research (INSTAAR)
>
> https://instaar.colorado.edu/research/labs-groups/coastal-oceanography-lab-group/
>
> Office: SEEC N155 | Phone: (+1) 303-492-4771  (please leave a voice mail)
> | @JuliaMMoriarty | she/her
> My work hours may not be your work hours. Please reply in your work hours.
>


-- 
Julia M. Moriarty
Assistant Professor, University of Colorado Boulder
Department of Atmospheric and Oceanic Sciences (ATOC) & Institute for
Arctic and Alpine Research (INSTAAR)
https://instaar.colorado.edu/research/labs-groups/coastal-oceanography-lab-group/

Office: SEEC N155 | Phone: (+1) 303-492-4771  (please leave a voice
mail) | @JuliaMMoriarty
| she/her
My work hours may not be your work hours. Please reply in your work hours.

-- 
You received this message because you are subscribed to the Google Groups
"atoc-colloquium" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to atoc-colloquium+unsubscribe at colorado.edu.


-- 
Scott Briggs (he/him/his)
Administrator

Advanced Study Program
Education, Engagement and Early-Career Development
National Center For Atmospheric Research
*phone: 303.497.1607*
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From sbriggs at ucar.edu  Tue Apr 11 18:11:00 2023
From: sbriggs at ucar.edu (Scott Briggs)
Date: Tue, 11 Apr 2023 18:11:00 -0600
Subject: [Grad-postdoc-assn] =?utf-8?q?Fwd=3A_ATOC_Colloquium=3A_Friday?=
	=?utf-8?q?=2C_April_14_=40_11am_MT_=E2=80=93_Vikas_Hanasoge_Natara?=
	=?utf-8?q?ja=2C_Ziqi_Yin=2C_and_Ethan_Murray_=28SEEC_S228_and_Zoom?=
	=?utf-8?q?=29?=
In-Reply-To: <PH0PR03MB6954FF7D360DB1AFCEEFEF0CBF949@PH0PR03MB6954.namprd03.prod.outlook.com>
References: <PH0PR03MB6954FF7D360DB1AFCEEFEF0CBF949@PH0PR03MB6954.namprd03.prod.outlook.com>
Message-ID: <CAHkSu_ce3drKSUzWUEO5nV-FgNWXvzp6HBF=Se2E1cmmOn-V1g@mail.gmail.com>

FYI

---------- Forwarded message ---------
From: Andrew Winters <andrew.c.winters at colorado.edu>
Date: Mon, Apr 10, 2023 at 1:34?PM
Subject: ATOC Colloquium: Friday, April 14 @ 11am MT ? Vikas Hanasoge
Nataraja, Ziqi Yin, and Ethan Murray (SEEC S228 and Zoom)
To: atoc-faculty (Alexandra Jahn) <atoc-faculty at lists.colorado.edu>,
atoc-students (Julie Lundquist) <atoc-students at lists.colorado.edu>,
Atoc-majors at lists.colorado.edu <atoc-majors at lists.colorado.edu>,
Atoc-minors at lists.colorado.edu <atoc-minors at lists.colorado.edu>,
atoc-researchers (Kelly Duong) <atoc-researchers at lists.colorado.edu>,
atoc-colloquium at lists.colorado.edu <atoc-colloquium at lists.colorado.edu>


Hi everyone,

The next ATOC Colloquium will be held in a hybrid format on *Friday, April
14 from 11a?12p MT over Zoom and in SEEC S228. *This week's colloquium will
feature a trio of conference-length talks from *ATOC graduate students,
Vikas Hanasoge Nataraja, Ziqi Yin, and Ethan Murray.* The zoom login
information and abstracts for each talk are provided below. Please join us
for coffee and conversation beginning at 10:45am MT, and stay afterwards
for a lunch catered by Illegal Pete's.
Please let us know if you have any questions or are interested in
delivering a talk at a future colloquium. A full schedule of ATOC colloquia
can be found at https://www.colorado.edu/atoc/colloquium.

We look forward to seeing you on Apr. 14!

-The ATOC Colloquium Committee

_________________________________________________

*Using Machine Learning to Improve Cloud Retrievals*
Vikas Hanasoge Nataraja (ATOC/LASP)

Cloud optical properties play an important role in determining the cloud
radiative effect (CRE), surface energy budget, and heating profiles. Cloud
optical thickness (COT), in particular, is important for the shortwave CRE.
Accurately predicting the COT will help to improve our understanding of the
Earth?s energy budget. Current algorithms for COT retrieval from passive
satellite imagery assume that clouds are homogenous within a pixel and
neglect the so-called ?3D effect? of clouds. We present a machine learning
model that takes into account the spatial context in satellite imagery to
retrieve the COT more accurately. Our model uses radiance fields from just
a single wavelength and is robust to various optical depths even when
trained on a highly constrained and limited data set. Testing on synthetic
and aircraft imagery has shown that the model is grounded in physics and is
self-consistent with the radiance fields.

*High-Resolution, Fully-Coupled Simulations of the Greenland Ice Sheet in a
Future, Strong Warming Scenario*
Ziqi Yin (ATOC)

The Greenland Ice Sheet (GrIS) is rapidly losing mass in response to global
warming, and its mass loss is driven both by atmospheric warming,
increasing surface melt and meltwater runoff, and oceanic warming, leading
to glacier speedup and enhanced ice discharge. Constraining future GrIS
mass loss therefore calls for a unified and coupled model infrastructure
employed at high horizontal resolution, allowing to resolve individual
glacier basins and detailed atmospheric processes such as orographic
precipitation. We will present results of a set of fully coupled
CESM2.2-CISM2.1 simulations, in which a variable-resolution grid that
features ?? regional refinement over the Arctic is used to represent the
atmosphere and land. An idealized warming experiment simulating a scenario
with atmospheric CO2 increasing 1% per year until quadrupling the
pre-industrial level and then held fixed, is carried out after a 180-year
pre-industrial simulation. We will present results on how the GrIS mass
balance and surface mass balance change and briefly cover the impact of
these changes on the climate. A comparison between our results and a
lower-resolution simulation using the 1? grid will also be discussed.

*Aircraft Measurements of Convective Eye and Eyewall Clouds in Tropical
Cyclone Sam*
Ethan Murray (ATOC/LASP)

Novel aircraft-based observations are used to diagnose the evolution of an
intense tropical cyclone's inner core. Six flights into Tropical Cyclone
Sam in 2021 resulted in excellent lidar, radar, and in situ data coverage
throughout the storm. Radar data provide a view into the cyclone's overall
precipitation structure, while detailed lidar data highlight Sam's
thermodynamic profile and low level clouds in the eye and eyewall. These
observations display the variety of convective and stratiform clouds, along
with their thermodynamic environments, within the inner core. In situ
observations confirm the thermodynamic changes in Sam, and measurements of
horizontal vorticity mixing explain how the cyclone's structure evolves
over time.

__________________________________________________

*Zoom login Information:*

*Topic: ATOC Colloquium*
*Time: Friday, Apr. 14 at 11am MT*

*Join Zoom Meeting*
*https://cuboulder.zoom.us/j/97845417945
<https://cuboulder.zoom.us/j/97845417945>*

*Meeting ID: 978 4541 7945 *
*Passcode: ATOC*

One tap mobile
+17193594580,,97845417945# US
+16699006833,,97845417945# US (San Jose)

Dial by your location
        +1 719 359 4580 US
        +1 669 900 6833 US (San Jose)
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 444 9171 US
        +1 646 558 8656 US (New York)
        +1 646 931 3860 US
        +1 301 715 8592 US (Washington DC)
        +1 309 205 3325 US
        +1 312 626 6799 US (Chicago)
        +1 386 347 5053 US
        +1 564 217 2000 US
Meeting ID: 978 4541 7945
Find your local number: https://cuboulder.zoom.us/u/acegj8GnMV

Join by SIP
97845417945 at zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 978 4541 7945
Passcode: 432312


_______________________________________________________

*Andrew C. Winters*
Assistant Professor
Department of Atmospheric and Oceanic Sciences (ATOC)
University of Colorado Boulder
311 UCB, Boulder, CO 80309-0311
Office: SEEC C277 || Phone: 303-735-5775
https://acwinters.weebly.com || @acwinters_wx || he/him/his

*CU Boulder acknowledges that it is located on the traditional territories
and ancestral homelands of the Cheyenne, Arapaho, Ute and many other Native
American nations. Their forced removal from these territories has caused
devastating and lasting impacts. Full CU Boulder land acknowledgment
<https://www.colorado.edu/about/land-acknowledgement> *

-- 
You received this message because you are subscribed to the Google Groups
"atoc-colloquium" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to atoc-colloquium+unsubscribe at colorado.edu.


-- 
Scott Briggs (he/him/his)
Administrator

Advanced Study Program
Education, Engagement and Early-Career Development
National Center For Atmospheric Research
*phone: 303.497.1607*
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From sbriggs at ucar.edu  Thu Apr 13 10:38:52 2023
From: sbriggs at ucar.edu (Scott Briggs)
Date: Thu, 13 Apr 2023 10:38:52 -0600
Subject: [Grad-postdoc-assn] =?utf-8?q?Fwd=3A_ATOC_Colloquium=3A_Friday?=
	=?utf-8?q?=2C_April_14_=40_11am_MT_=E2=80=93_Vikas_Hanasoge_Natara?=
	=?utf-8?q?ja=2C_Ziqi_Yin=2C_and_Ethan_Murray_=28SEEC_S228_and_Zoom?=
	=?utf-8?q?=29?=
In-Reply-To: <PH0PR03MB6954CE625361E13C4190E136BF9B9@PH0PR03MB6954.namprd03.prod.outlook.com>
References: <PH0PR03MB6954FF7D360DB1AFCEEFEF0CBF949@PH0PR03MB6954.namprd03.prod.outlook.com>
 <PH0PR03MB6954CE625361E13C4190E136BF9B9@PH0PR03MB6954.namprd03.prod.outlook.com>
Message-ID: <CAHkSu_feQJkd1Yqdpzde=frSPLvfQreKR0bqw8Xfxew7XEkHCA@mail.gmail.com>

Friendly Reminder

---------- Forwarded message ---------
From: Andrew Winters <andrew.c.winters at colorado.edu>
Date: Thu, Apr 13, 2023 at 8:00?AM
Subject: Re: ATOC Colloquium: Friday, April 14 @ 11am MT ? Vikas Hanasoge
Nataraja, Ziqi Yin, and Ethan Murray (SEEC S228 and Zoom)
To: atoc-faculty (Alexandra Jahn) <atoc-faculty at lists.colorado.edu>,
atoc-students (Julie Lundquist) <atoc-students at lists.colorado.edu>,
Atoc-majors at lists.colorado.edu <atoc-majors at lists.colorado.edu>,
Atoc-minors at lists.colorado.edu <atoc-minors at lists.colorado.edu>,
atoc-researchers (Kelly Duong) <atoc-researchers at lists.colorado.edu>,
atoc-colloquium at lists.colorado.edu <atoc-colloquium at lists.colorado.edu>


Hi everyone,

A reminder that the next ATOC Colloquium will be held in a hybrid
format on *Friday,
April 14 from 11a?12p MT over Zoom and in SEEC S228. *This week's
colloquium will
feature a trio of conference-length talks from *ATOC graduate students,
Vikas Hanasoge Nataraja, Ziqi Yin, and Ethan Murray.* The zoom login
information and abstracts for each talk are provided below. Please join us
for coffee and conversation beginning at 10:45am MT, and stay afterwards
for a lunch catered by Illegal Pete's.

We look forward to seeing you on Friday!

-The ATOC Colloquium Committee

_________________________________________________

*Using Machine Learning to Improve Cloud Retrievals*
Vikas Hanasoge Nataraja (ATOC/LASP)

Cloud optical properties play an important role in determining the cloud
radiative effect (CRE), surface energy budget, and heating profiles. Cloud
optical thickness (COT), in particular, is important for the shortwave CRE.
Accurately predicting the COT will help to improve our understanding of the
Earth?s energy budget. Current algorithms for COT retrieval from passive
satellite imagery assume that clouds are homogenous within a pixel and
neglect the so-called ?3D effect? of clouds. We present a machine learning
model that takes into account the spatial context in satellite imagery to
retrieve the COT more accurately. Our model uses radiance fields from just
a single wavelength and is robust to various optical depths even when
trained on a highly constrained and limited data set. Testing on synthetic
and aircraft imagery has shown that the model is grounded in physics and is
self-consistent with the radiance fields.

*High-Resolution, Fully-Coupled Simulations of the Greenland Ice Sheet in a
Future, Strong Warming Scenario*
Ziqi Yin (ATOC)

The Greenland Ice Sheet (GrIS) is rapidly losing mass in response to global
warming, and its mass loss is driven both by atmospheric warming,
increasing surface melt and meltwater runoff, and oceanic warming, leading
to glacier speedup and enhanced ice discharge. Constraining future GrIS
mass loss therefore calls for a unified and coupled model infrastructure
employed at high horizontal resolution, allowing to resolve individual
glacier basins and detailed atmospheric processes such as orographic
precipitation. We will present results of a set of fully coupled
CESM2.2-CISM2.1 simulations, in which a variable-resolution grid that
features ?? regional refinement over the Arctic is used to represent the
atmosphere and land. An idealized warming experiment simulating a scenario
with atmospheric CO2 increasing 1% per year until quadrupling the
pre-industrial level and then held fixed, is carried out after a 180-year
pre-industrial simulation. We will present results on how the GrIS mass
balance and surface mass balance change and briefly cover the impact of
these changes on the climate. A comparison between our results and a
lower-resolution simulation using the 1? grid will also be discussed.

*Aircraft Measurements of Convective Eye and Eyewall Clouds in Tropical
Cyclone Sam*
Ethan Murray (ATOC/LASP)

Novel aircraft-based observations are used to diagnose the evolution of an
intense tropical cyclone's inner core. Six flights into Tropical Cyclone
Sam in 2021 resulted in excellent lidar, radar, and in situ data coverage
throughout the storm. Radar data provide a view into the cyclone's overall
precipitation structure, while detailed lidar data highlight Sam's
thermodynamic profile and low level clouds in the eye and eyewall. These
observations display the variety of convective and stratiform clouds, along
with their thermodynamic environments, within the inner core. In situ
observations confirm the thermodynamic changes in Sam, and measurements of
horizontal vorticity mixing explain how the cyclone's structure evolves
over time.

__________________________________________________

*Zoom login Information:*

*Topic: ATOC Colloquium*
*Time: Friday, Apr. 14 at 11am MT*

*Join Zoom Meeting*
*https://cuboulder.zoom.us/j/97845417945
<https://cuboulder.zoom.us/j/97845417945>*

*Meeting ID: 978 4541 7945 *
*Passcode: ATOC*

One tap mobile
+17193594580,,97845417945# US
+16699006833,,97845417945# US (San Jose)

Dial by your location
        +1 719 359 4580 US
        +1 669 900 6833 US (San Jose)
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 444 9171 US
        +1 646 558 8656 US (New York)
        +1 646 931 3860 US
        +1 301 715 8592 US (Washington DC)
        +1 309 205 3325 US
        +1 312 626 6799 US (Chicago)
        +1 386 347 5053 US
        +1 564 217 2000 US
Meeting ID: 978 4541 7945
Find your local number: https://cuboulder.zoom.us/u/acegj8GnMV

Join by SIP
97845417945 at zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 978 4541 7945
Passcode: 432312


_______________________________________________________

*Andrew C. Winters*
Assistant Professor
Department of Atmospheric and Oceanic Sciences (ATOC)
University of Colorado Boulder
311 UCB, Boulder, CO 80309-0311
Office: SEEC C277 || Phone: 303-735-5775
https://acwinters.weebly.com || @acwinters_wx || he/him/his

*CU Boulder acknowledges that it is located on the traditional territories
and ancestral homelands of the Cheyenne, Arapaho, Ute and many other Native
American nations. Their forced removal from these territories has caused
devastating and lasting impacts. Full CU Boulder land acknowledgment
<https://www.colorado.edu/about/land-acknowledgement> *

------------------------------
*From:* Andrew Winters
*Sent:* Monday, April 10, 2023 1:34 PM
*To:* atoc-faculty (Alexandra Jahn) <atoc-faculty at lists.colorado.edu>;
atoc-students (Julie Lundquist) <atoc-students at lists.colorado.edu>;
Atoc-majors at lists.colorado.edu <atoc-majors at lists.colorado.edu>;
Atoc-minors at lists.colorado.edu <atoc-minors at lists.colorado.edu>;
atoc-researchers (Kelly Duong) <atoc-researchers at lists.colorado.edu>;
atoc-colloquium at lists.colorado.edu <atoc-colloquium at lists.colorado.edu>
*Subject:* ATOC Colloquium: Friday, April 14 @ 11am MT ? Vikas Hanasoge
Nataraja, Ziqi Yin, and Ethan Murray (SEEC S228 and Zoom)

Hi everyone,

The next ATOC Colloquium will be held in a hybrid format on *Friday, April
14 from 11a?12p MT over Zoom and in SEEC S228. *This week's colloquium will
feature a trio of conference-length talks from *ATOC graduate students,
Vikas Hanasoge Nataraja, Ziqi Yin, and Ethan Murray.* The zoom login
information and abstracts for each talk are provided below. Please join us
for coffee and conversation beginning at 10:45am MT, and stay afterwards
for a lunch catered by Illegal Pete's.
Please let us know if you have any questions or are interested in
delivering a talk at a future colloquium. A full schedule of ATOC colloquia
can be found at https://www.colorado.edu/atoc/colloquium.

We look forward to seeing you on Apr. 14!

-The ATOC Colloquium Committee

_________________________________________________

*Using Machine Learning to Improve Cloud Retrievals*
Vikas Hanasoge Nataraja (ATOC/LASP)

Cloud optical properties play an important role in determining the cloud
radiative effect (CRE), surface energy budget, and heating profiles. Cloud
optical thickness (COT), in particular, is important for the shortwave CRE.
Accurately predicting the COT will help to improve our understanding of the
Earth?s energy budget. Current algorithms for COT retrieval from passive
satellite imagery assume that clouds are homogenous within a pixel and
neglect the so-called ?3D effect? of clouds. We present a machine learning
model that takes into account the spatial context in satellite imagery to
retrieve the COT more accurately. Our model uses radiance fields from just
a single wavelength and is robust to various optical depths even when
trained on a highly constrained and limited data set. Testing on synthetic
and aircraft imagery has shown that the model is grounded in physics and is
self-consistent with the radiance fields.

*High-Resolution, Fully-Coupled Simulations of the Greenland Ice Sheet in a
Future, Strong Warming Scenario*
Ziqi Yin (ATOC)

The Greenland Ice Sheet (GrIS) is rapidly losing mass in response to global
warming, and its mass loss is driven both by atmospheric warming,
increasing surface melt and meltwater runoff, and oceanic warming, leading
to glacier speedup and enhanced ice discharge. Constraining future GrIS
mass loss therefore calls for a unified and coupled model infrastructure
employed at high horizontal resolution, allowing to resolve individual
glacier basins and detailed atmospheric processes such as orographic
precipitation. We will present results of a set of fully coupled
CESM2.2-CISM2.1 simulations, in which a variable-resolution grid that
features ?? regional refinement over the Arctic is used to represent the
atmosphere and land. An idealized warming experiment simulating a scenario
with atmospheric CO2 increasing 1% per year until quadrupling the
pre-industrial level and then held fixed, is carried out after a 180-year
pre-industrial simulation. We will present results on how the GrIS mass
balance and surface mass balance change and briefly cover the impact of
these changes on the climate. A comparison between our results and a
lower-resolution simulation using the 1? grid will also be discussed.

*Aircraft Measurements of Convective Eye and Eyewall Clouds in Tropical
Cyclone Sam*
Ethan Murray (ATOC/LASP)

Novel aircraft-based observations are used to diagnose the evolution of an
intense tropical cyclone's inner core. Six flights into Tropical Cyclone
Sam in 2021 resulted in excellent lidar, radar, and in situ data coverage
throughout the storm. Radar data provide a view into the cyclone's overall
precipitation structure, while detailed lidar data highlight Sam's
thermodynamic profile and low level clouds in the eye and eyewall. These
observations display the variety of convective and stratiform clouds, along
with their thermodynamic environments, within the inner core. In situ
observations confirm the thermodynamic changes in Sam, and measurements of
horizontal vorticity mixing explain how the cyclone's structure evolves
over time.

__________________________________________________

*Zoom login Information:*

*Topic: ATOC Colloquium*
*Time: Friday, Apr. 14 at 11am MT*

*Join Zoom Meeting*
*https://cuboulder.zoom.us/j/97845417945
<https://cuboulder.zoom.us/j/97845417945>*

*Meeting ID: 978 4541 7945 *
*Passcode: ATOC*

One tap mobile
+17193594580,,97845417945# US
+16699006833,,97845417945# US (San Jose)

Dial by your location
        +1 719 359 4580 US
        +1 669 900 6833 US (San Jose)
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 444 9171 US
        +1 646 558 8656 US (New York)
        +1 646 931 3860 US
        +1 301 715 8592 US (Washington DC)
        +1 309 205 3325 US
        +1 312 626 6799 US (Chicago)
        +1 386 347 5053 US
        +1 564 217 2000 US
Meeting ID: 978 4541 7945
Find your local number: https://cuboulder.zoom.us/u/acegj8GnMV

Join by SIP
97845417945 at zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 978 4541 7945
Passcode: 432312


_______________________________________________________

*Andrew C. Winters*
Assistant Professor
Department of Atmospheric and Oceanic Sciences (ATOC)
University of Colorado Boulder
311 UCB, Boulder, CO 80309-0311
Office: SEEC C277 || Phone: 303-735-5775
https://acwinters.weebly.com || @acwinters_wx || he/him/his

*CU Boulder acknowledges that it is located on the traditional territories
and ancestral homelands of the Cheyenne, Arapaho, Ute and many other Native
American nations. Their forced removal from these territories has caused
devastating and lasting impacts. Full CU Boulder land acknowledgment
<https://www.colorado.edu/about/land-acknowledgement> *

-- 
You received this message because you are subscribed to the Google Groups
"atoc-colloquium" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to atoc-colloquium+unsubscribe at colorado.edu.


-- 
Scott Briggs (he/him/his)
Administrator

Advanced Study Program
Education, Engagement and Early-Career Development
National Center For Atmospheric Research
*phone: 303.497.1607*
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From sbriggs at ucar.edu  Wed Apr 19 07:13:49 2023
From: sbriggs at ucar.edu (Scott Briggs)
Date: Wed, 19 Apr 2023 07:13:49 -0600
Subject: [Grad-postdoc-assn] Fwd: PhD DBER Geoscience Opportunity
In-Reply-To: <CH2PR12MB418294B77E8321129AD16064D3629@CH2PR12MB4182.namprd12.prod.outlook.com>
References: <BN8PR19MB29950931D0DAC34546029897B5629@BN8PR19MB2995.namprd19.prod.outlook.com>
 <CH2PR12MB418294B77E8321129AD16064D3629@CH2PR12MB4182.namprd12.prod.outlook.com>
Message-ID: <CAHkSu_fBWCsknvqnZ-t0A6amLr1ca=x8R=s0uLLw0xa5ib10cg@mail.gmail.com>

FYI

---------- Forwarded message ---------
From: Libarkin, Julie <libarkin at msu.edu>
Date: Wed, Apr 19, 2023 at 4:12?AM
Subject: Fwd: PhD DBER Geoscience Opportunity
To: <GEOED-RESEARCH at list.msu.edu>


------------------------------
*From:* Steph Shepherd <slshepherd at auburn.edu>
*Sent:* Tuesday, April 18, 2023 10:42 PM

*Subject:* PhD DBER Geoscience Opportunity


Please share with your students.  Thank you



*DBER PhD Opportunity in the Geosciences, Auburn University*



The Geomorphology Lab in the Department of Geosciences at Auburn University
is seeking a PhD student to work on an interdisciplinary team to study the
effect of faculty professional development and active learning
infrastructure on the use of inclusive, evidence-based learning approaches
by faculty and the resulting impact on both the engagement and success
outcomes of diverse students in STEM courses in the College of Science and
Mathematics (COSAM) at Auburn.  The successful applicant will develop
dissertation research within the larger project, but may also, if
interested, conduct lab or field-based geoscience research.



Applicants should have an MS in Geoscience, Earth System Science,
Environmental Science, or a related discipline.  Exceptional applicants
with a bachelor?s degree will also be considered. Experience or course work
in statistics is preferred, but not required.



To apply submit the following by email to slshepherd(at)auburn.edu:  1) a
cover letter that addresses your experiences and goal with respect to this
position, 2) a CV, 3) contact information for three references, 4) copies
(unofficial) of your college and graduate transcripts. Review of
applications will begin May 15th and continue until the position is
filled.  The top candidates will be asked to submit an official application
<https://urldefense.com/v3/__http://graduate.auburn.edu/prospective-students/application-instructions/__;!!HXCxUKc!xFwHovvwsPfNGowE9B1iQGjK0tqcY37mLTxugpl1uBvS31xJRYplrxfngcQkJGEYPAmgg5YmhVI4LjhV02fmmg$>
to the Graduate School



The Department of Geosciences
<https://urldefense.com/v3/__https://www.auburn.edu/cosam/departments/geosciences/index.htm__;!!HXCxUKc!xFwHovvwsPfNGowE9B1iQGjK0tqcY37mLTxugpl1uBvS31xJRYplrxfngcQkJGEYPAmgg5YmhVI4LjiaJvizhA$>
is home to a vibrant graduate program
<https://urldefense.com/v3/__https://www.auburn.edu/cosam/departments/geosciences/graduate_programs/index.htm__;!!HXCxUKc!xFwHovvwsPfNGowE9B1iQGjK0tqcY37mLTxugpl1uBvS31xJRYplrxfngcQkJGEYPAmgg5YmhVI4Ljj-4Q578g$>,
with MS degrees in Geology and Geography as well as a PhD in Earth Systems
Science.  Additionally, COSAM has discipline-based education research
faculty embedded in every department.  The successful applicant will join
an active group of researchers
<https://urldefense.com/v3/__https://www.auburn.edu/cosam/clusters/dber/index.htm__;!!HXCxUKc!xFwHovvwsPfNGowE9B1iQGjK0tqcY37mLTxugpl1uBvS31xJRYplrxfngcQkJGEYPAmgg5YmhVI4Lji4KeYc8g$>
dedicated to improving teaching and learning in STEM.



If you would like more information or have questions about the position,
contact the project PI, Dr. Stephanie Shepherd ? slshepherd(at)auburn.edu.







Stephanie L. Shepherd, Ph.D. (she,her)

*Associate Professor*

*Co-Director, AUTeach*

*Dept. of Geosciences*

*Auburn University*



*GEOS Office: Haley 2046C*

*AUTeach Office: Haley*



*www.auburn.edu/auteach <http://www.auburn.edu/auteach>*



[image: signature_3667321913]




-- 
Scott Briggs (he/him/his)
Administrator

Advanced Study Program
Education, Engagement and Early-Career Development
National Center For Atmospheric Research
*phone: 303.497.1607*
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From sbriggs at ucar.edu  Mon Apr 24 10:23:01 2023
From: sbriggs at ucar.edu (Scott Briggs)
Date: Mon, 24 Apr 2023 10:23:01 -0600
Subject: [Grad-postdoc-assn] =?utf-8?q?Fwd=3A_ATOC_Colloquium=3A_Friday?=
	=?utf-8?q?=2C_April_28_=40_11am_=E2=80=93_Dr=2E_Michael_Alexander_?=
	=?utf-8?q?=28NOAA/PSL=29_=E2=80=93_SEEC_S228_and_Zoom?=
In-Reply-To: <PH0PR03MB69545B6A5D30FFBD5243B0D3BF609@PH0PR03MB6954.namprd03.prod.outlook.com>
References: <PH0PR03MB69545B6A5D30FFBD5243B0D3BF609@PH0PR03MB6954.namprd03.prod.outlook.com>
Message-ID: <CAHkSu_fLsd5X5NkSjdn=DHBjgOxSGDusjZCL-zsrq_wYu9ffmw@mail.gmail.com>

FYI

---------- Forwarded message ---------
From: Andrew Winters <andrew.c.winters at colorado.edu>
Date: Mon, Apr 24, 2023 at 8:00?AM
Subject: ATOC Colloquium: Friday, April 28 @ 11am ? Dr. Michael Alexander
(NOAA/PSL) ? SEEC S228 and Zoom
To: atoc-faculty (Alexandra Jahn) <atoc-faculty at lists.colorado.edu>,
Atoc-majors at lists.colorado.edu <atoc-majors at lists.colorado.edu>,
Atoc-minors at lists.colorado.edu <atoc-minors at lists.colorado.edu>,
atoc-students (Julie Lundquist) <atoc-students at lists.colorado.edu>,
atoc-researchers (Kelly Duong) <atoc-researchers at lists.colorado.edu>,
atoc-colloquium at lists.colorado.edu <atoc-colloquium at lists.colorado.edu>


Hi everyone,

A reminder that the final ATOC Colloquium of the spring semester will be
held in a hybrid format on *Friday, April 28 from 11a?12p MT over Zoom and
in SEEC S228. *This week's colloquium will feature a seminar from *Dr.
Michael Alexander (NOAA/PSL)* entitled, *"Marine Heatwaves: Their Impacts,
Causes, Predictability and Response to Climate Change*". The zoom login
information and an abstract for the colloquium are provided below. Please
join us for coffee and conversation beginning at 10:45am MT, and stay
afterwards for a lunch catered by Illegal Pete's.
We look forward to seeing you on Friday!

-The ATOC Colloquium Committee

_________________________________________________

*Marine Heatwaves: Their Impacts, Causes, Predictability and Response to
Climate Change*
Michael Alexander (NOAA/PSL)

Marine heatwaves (MHWs) are periods of persistent anomalously warm ocean
temperatures, which can have significant effects on marine life as well as
coastal communities and economies. Extensive marine heatwaves occurred over
the global ocean in the past ten years, including in the Gulf of Maine in
2012, and off the US west coast in 2014-2016 (termed ?The Blob?) and again
in 2019. The warming had complex effects on marine ecosystems and species
such as corals, lobsters and whales.

Extensive research on MHWs began about a dozen years ago and scientists at
the Physical Sciences Lab have been involved in several recent studies that
explore MHWs using global climate models and recently developed
high-resolution ocean reanalyses. I?ll present results from these studies
including: i) the causes of MHWs associated with changes in mixed layer
depth; ii) heat waves that occur at the ocean bottom in coastal regions,
where many commercially important species live; iii) ?thermal displacement?
- the potential movement of marine species to avoid MHWs; iv) prediction of
MHWs and v) how ocean heatwaves may change in the future. Long-term trends
in MHWs strongly depend on how the mean warming associated with the
increase in greenhouse gasses is considered.

__________________________________________________

*Zoom login Information:*

*Topic: ATOC Colloquium*
*Time: Friday, Apr. 28 at 11am MT*

*Join Zoom Meeting*

* https://cuboulder.zoom.us/j/97845417945
<https://cuboulder.zoom.us/j/97845417945>*

*Meeting ID: 978 4541 7945 *
*Passcode: ATOC*

One tap mobile
+17193594580,,97845417945# US
+16699006833,,97845417945# US (San Jose)

Dial by your location
        +1 719 359 4580 US
        +1 669 900 6833 US (San Jose)
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 444 9171 US
        +1 646 558 8656 US (New York)
        +1 646 931 3860 US
        +1 301 715 8592 US (Washington DC)
        +1 309 205 3325 US
        +1 312 626 6799 US (Chicago)
        +1 386 347 5053 US
        +1 564 217 2000 US
Meeting ID: 978 4541 7945
Find your local number: https://cuboulder.zoom.us/u/acegj8GnMV

Join by SIP
97845417945 at zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 978 4541 7945
Passcode: 432312

_______________________________________________________

*Andrew C. Winters*
Assistant Professor
Department of Atmospheric and Oceanic Sciences (ATOC)
University of Colorado Boulder
311 UCB, Boulder, CO 80309-0311
Office: SEEC C277 || Phone: 303-735-5775
https://acwinters.weebly.com || @acwinters_wx || he/him/his

*CU Boulder acknowledges that it is located on the traditional territories
and ancestral homelands of the Cheyenne, Arapaho, Ute and many other Native
American nations. Their forced removal from these territories has caused
devastating and lasting impacts. Full CU Boulder land acknowledgment
<https://www.colorado.edu/about/land-acknowledgement> *

-- 
You received this message because you are subscribed to the Google Groups
"atoc-colloquium" group.
To unsubscribe from this group and stop receiving emails from it, send an
email to atoc-colloquium+unsubscribe at colorado.edu.


-- 
Scott Briggs (he/him/his)
Administrator

Advanced Study Program
Education, Engagement and Early-Career Development
National Center For Atmospheric Research
*phone: 303.497.1607*
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From sbriggs at ucar.edu  Thu Apr 27 08:28:38 2023
From: sbriggs at ucar.edu (Scott Briggs)
Date: Thu, 27 Apr 2023 08:28:38 -0600
Subject: [Grad-postdoc-assn] =?utf-8?q?Fwd=3A_ATOC_Colloquium=3A_Friday?=
	=?utf-8?q?=2C_April_28_=40_11am_=E2=80=93_Dr=2E_Michael_Alexander_?=
	=?utf-8?q?=28NOAA/PSL=29_=E2=80=93_SEEC_S228_and_Zoom?=
In-Reply-To: <PH0PR03MB69540A6E1AB7A71906EC4464BF659@PH0PR03MB6954.namprd03.prod.outlook.com>
References: <PH0PR03MB69545B6A5D30FFBD5243B0D3BF609@PH0PR03MB6954.namprd03.prod.outlook.com>
 <PH0PR03MB69540A6E1AB7A71906EC4464BF659@PH0PR03MB6954.namprd03.prod.outlook.com>
Message-ID: <CAHkSu_cyTwL-88Jnp4q7hjVieaGL7JXao848ZcnebZ99-bJ_Bw@mail.gmail.com>

FYI this talk is tomorrow.

Scott

---------- Forwarded message ---------
From: Andrew Winters <andrew.c.winters at colorado.edu>
Date: Thu, Apr 27, 2023 at 8:00?AM
Subject: Re: ATOC Colloquium: Friday, April 28 @ 11am ? Dr. Michael
Alexander (NOAA/PSL) ? SEEC S228 and Zoom
To: atoc-faculty (Alexandra Jahn) <atoc-faculty at lists.colorado.edu>,
Atoc-majors at lists.colorado.edu <atoc-majors at lists.colorado.edu>,
Atoc-minors at lists.colorado.edu <atoc-minors at lists.colorado.edu>,
atoc-students (Julie Lundquist) <atoc-students at lists.colorado.edu>,
atoc-researchers (Kelly Duong) <atoc-researchers at lists.colorado.edu>,
atoc-colloquium at lists.colorado.edu <atoc-colloquium at lists.colorado.edu>


Hi everyone,

A reminder that the final ATOC Colloquium of the spring semester will be
held in a hybrid format on *Friday, April 28 from 11a?12p MT over Zoom and
in SEEC S228. *This week's colloquium will feature a seminar from *Dr.
Michael Alexander (NOAA/PSL)* entitled, *"Marine Heatwaves: Their Impacts,
Causes, Predictability and Response to Climate Change*". The zoom login
information and an abstract for the colloquium are provided below. Please
join us for coffee and conversation beginning at 10:45am MT, and stay
afterwards for a lunch catered by Illegal Pete's.
We look forward to seeing you on Friday!

-The ATOC Colloquium Committee

_________________________________________________

*Marine Heatwaves: Their Impacts, Causes, Predictability and Response to
Climate Change*
Michael Alexander (NOAA/PSL)

Marine heatwaves (MHWs) are periods of persistent anomalously warm ocean
temperatures, which can have significant effects on marine life as well as
coastal communities and economies. Extensive marine heatwaves occurred over
the global ocean in the past ten years, including in the Gulf of Maine in
2012, and off the US west coast in 2014-2016 (termed ?The Blob?) and again
in 2019. The warming had complex effects on marine ecosystems and species
such as corals, lobsters and whales.

Extensive research on MHWs began about a dozen years ago and scientists at
the Physical Sciences Lab have been involved in several recent studies that
explore MHWs using global climate models and recently developed
high-resolution ocean reanalyses. I?ll present results from these studies
including: i) the causes of MHWs associated with changes in mixed layer
depth; ii) heat waves that occur at the ocean bottom in coastal regions,
where many commercially important species live; iii) ?thermal displacement?
- the potential movement of marine species to avoid MHWs; iv) prediction of
MHWs and v) how ocean heatwaves may change in the future. Long-term trends
in MHWs strongly depend on how the mean warming associated with the
increase in greenhouse gasses is considered.

__________________________________________________

*Zoom login Information:*

*Topic: ATOC Colloquium*
*Time: Friday, Apr. 28 at 11am MT*

*Join Zoom Meeting*

* https://cuboulder.zoom.us/j/97845417945
<https://cuboulder.zoom.us/j/97845417945>*

*Meeting ID: 978 4541 7945 *
*Passcode: ATOC*

One tap mobile
+17193594580,,97845417945# US
+16699006833,,97845417945# US (San Jose)

Dial by your location
        +1 719 359 4580 US
        +1 669 900 6833 US (San Jose)
        +1 253 215 8782 US (Tacoma)
        +1 346 248 7799 US (Houston)
        +1 669 444 9171 US
        +1 646 558 8656 US (New York)
        +1 646 931 3860 US
        +1 301 715 8592 US (Washington DC)
        +1 309 205 3325 US
        +1 312 626 6799 US (Chicago)
        +1 386 347 5053 US
        +1 564 217 2000 US
Meeting ID: 978 4541 7945
Find your local number: https://cuboulder.zoom.us/u/acegj8GnMV

Join by SIP
97845417945 at zoomcrc.com

Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 978 4541 7945
Passcode: 432312


_______________________________________________________

*Andrew C. Winters*
Assistant Professor
Department of Atmospheric and Oceanic Sciences (ATOC)
University of Colorado Boulder
311 UCB, Boulder, CO 80309-0311
Office: SEEC C277 || Phone: 303-735-5775
https://acwinters.weebly.com || @acwinters_wx || he/him/his

*CU Boulder acknowledges that it is located on the traditional territories
and ancestral homelands of the Cheyenne, Arapaho, Ute and many other Native
American nations. Their forced removal from these territories has caused
devastating and lasting impacts. Full CU Boulder land acknowledgment
<https://www.colorado.edu/about/land-acknowledgement> *

------------------------------
*From:* Andrew Winters
*Sent:* Friday, April 21, 2023 8:39 AM
*To:* atoc-faculty (Alexandra Jahn) <atoc-faculty at lists.colorado.edu>;
Atoc-majors at lists.colorado.edu <atoc-majors at lists.colorado.edu>;
Atoc-minors at lists.colorado.edu <atoc-minors at lists.colorado.edu>;
atoc-students (Julie Lundquist) <atoc-students at lists.colorado.edu>;
atoc-researchers (Kelly Duong) <atoc-researchers at lists.colorado.edu>;
atoc-colloquium at lists.colorado.edu <atoc-colloquium at lists.colorado.edu>
*Subject:* ATOC Colloquium: Friday, April 28 @ 11am ? Dr. Michael Alexander
(NOAA/PSL) ? SEEC S228 and Zoom

Hi everyone,

A reminder that the final ATOC Colloquium of the spring semester will be
held in a hybrid format on *Friday, April 28 from 11a?12p MT over Zoom and
in SEEC S228. *This week's colloquium will feature a seminar from *Dr.
Michael Alexander (NOAA/PSL)* entitled, *"Marine Heatwaves: Their Impacts,
Causes, Predictability and Response to Climate Change*". The zoom login
information and an abstract for the colloquium are provided below. Please
join us for coffee and conversation beginning at 10:45am MT, and stay
afterwards for a lunch catered by Illegal Pete's.
We look forward to seeing you on Friday!

-The ATOC Colloquium Committee

_________________________________________________

*Marine Heatwaves: Their Impacts, Causes, Predictability and Response to
Climate Change*
Michael Alexander (NOAA/PSL)

Marine heatwaves (MHWs) are periods of persistent anomalously warm ocean
temperatures, which can have significant effects on marine life as well as
coastal communities and economies. Extensive marine heatwaves occurred over
the global ocean in the past ten years, including in the Gulf of Maine in
2012, and off the US west coast in 2014-2016 (termed ?The Blob?) and again
in 2019. The warming had complex effects on marine ecosystems and species
such as corals, lobsters and whales.

Extensive research on MHWs began about a dozen years ago and scientists at
the Physical Sciences Lab have been involved in several recent studies that
explore MHWs using global climate models and recently developed
high-resolution ocean reanalyses. I?ll present results from these studies
including: i) the causes of MHWs associated with changes in mixed layer
depth; ii) heat waves that occur at the ocean bottom in coastal regions,
where many commercially important species live; iii) ?thermal displacement?
- the potential movement of marine species to avoid MHWs; iv) prediction of
MHWs and v) how ocean heatwaves may change in the future. Long-term trends
in MHWs strongly depend on how the mean warming associated with the
increase in greenhouse gasses is considered.

__________________________________________________

*Zoom login Information:*

*Topic: ATOC Colloquium*
*Time: Friday, Apr. 28 at 11am MT*

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_______________________________________________________

*Andrew C. Winters*
Assistant Professor
Department of Atmospheric and Oceanic Sciences (ATOC)
University of Colorado Boulder
311 UCB, Boulder, CO 80309-0311
Office: SEEC C277 || Phone: 303-735-5775
https://acwinters.weebly.com || @acwinters_wx || he/him/his

*CU Boulder acknowledges that it is located on the traditional territories
and ancestral homelands of the Cheyenne, Arapaho, Ute and many other Native
American nations. Their forced removal from these territories has caused
devastating and lasting impacts. Full CU Boulder land acknowledgment
<https://www.colorado.edu/about/land-acknowledgement> *

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*phone: 303.497.1607*
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