[Go-essp-tech] User Response: CMIP5 archive Question/Problem [ESG-PCMDI] hfds for CNRM-CM5 & NorESM1-M ISSUE=701 PROJ=17

Wed Feb 8 10:03:45 MST 2012

Hello Kerin,

I'm afraid I can't help with ferret -- there time axis in that file certainly has 72 points, and the hfds variable has the appropriate amount of data. If ferret is not finding this then it looks like a problem with ferret or your configuration of ferret -- if it is a software issue you are more likely to get support on the go-essp-tech list (which I've copied this to) or from the FERRET support team,

cheers,
Martin

________________________________
From: CMIP5 Helpdesk [cmip5-helpdesk at stfc.ac.uk]
Sent: 08 February 2012 16:21
To: Juckes, Martin (STFC,RAL,RALSP)
Subject: User Response: CMIP5 archive Question/Problem [ESG-PCMDI] hfds for CNRM-CM5 & NorESM1-M ISSUE=701 PROJ=17

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The following changes have been made to this Query: Changed Status to Action from Action, Appended a Description, Incoming mail: From: kzhuang at email.arizona.edu; To: cmip5-helpdesk at stfc.ac.uk.

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Workspace:      CMIP5 Help Desk
Query:  CMIP5 archive Question/Problem [ESG-PCMDI] hfds for CNRM-CM5 & NorESM1-M
Query Number:   701

Priority:       Normal          Status:         Action
Date:   08/02/2012              Time:   16:21:06
Creation Date:  06/02/2012              Creation Time:  04:03:06
Created By:     kzhuang at email.arizona.edu

Click here to view Query in Browser<https://footprints.badc.rl.ac.uk/MRcgi/MRlogin.pl?DL=701DA17>

Description:
Entered on 08/02/2012 at 16:21:06 GMT (GMT+0000) by kzhuang at email.arizona.edu:
Dear Martin,
Here's my check on hfds_Omon_CNRM-CM5_historical_r1i1p1_200001-200512.nc
name title I J K L
LAT latitude coordinate 1:362 ...
1:292 ...
LON longitude coordinate 1:362 ...
1:292 ...
LAT_VERTICES
1:362 1:4
1:292 1:362
LON_VERTICES
1:362 1:4
1:292 1:362
HFDS Downward Heat Flux at Sea Water 1:362 ...
1:292 ...
I am using ferret. After ncdump, I found there is record for the time
series.
float hfds(time, j, i) ;
hfds:standard_name = "surface_downward_heat_flux_in_sea_water" ;
hfds:long_name = "Downward Heat Flux at Sea Water Surface" ;

Are there troubles for ferret to read this?

Best regards,
Kelin
____________
Kelin Zhuang
Department of Geosciences
The University of Arizona

On 02/08/2012 09:12 AM, CMIP5 Helpdesk wrote:
> [Duplicate message snipped]

Entered on 08/02/2012 at 16:12:06 GMT (GMT+0000) by Martin Juckes:
Dear Kelin,

Thank you for specifying the files you are having trouble with. Have you looked at the hfds_Omon_CNRM-CM5_historical_r1i1p1_200001-200512.nc file? Can you confirm that your software works OK with this file?

regards,
Martin

Entered on 08/02/2012 at 15:24:09 GMT (GMT+0000) by kzhuang at email.arizona.edu:
Thank you for all your help.
The problem now is not the curvilinear grid itself. We are missing
sufficient data series. Let me describe the data in detail:
For instance, hfds_Omon_NorESM1-M_rcp26_r1i1p1_200601-210012f.nc
name title
I J K L
LAT latitude coordinate 1:320
... 1:384 ...
LON longitude coordinate 1:320
... 1:384 ...
HFDS Downward Heat Flux at Sea Water 1:320 ... 1:384 ...
We have only one data here. The data should span from 200601 through
210012, we should have 1140 hfds data but now we have only one. It is of
note that it is monthly data instead of average. Obviously we are lack
of enough data.
Things are similar to NorESM1-M historical, rcp45, and rcp85.
Another example is hfds_Omon_CNRM-CM5_rcp26_r1i1p1_209601-210012.nc
LAT latitude coordinate 1:362 ... 1:292 ...
LON longitude coordinate 1:362 ...
1:292 ...
LAT_VERTICES
1:362 1:4
1:292 1:362
LON_VERTICES
1:362 1:4
1:292 1:362
HFDS Downward Heat Flux at Sea Water 1:362 ... 1:292 ...
We should have 60 hfds (5yearX12month=60) but we only have one hfds
here. Things are similar to CNRM-CM5 historical, rcp45, and rcp85. We
are lack of enough data again.
Conversely, let us have a good data here with a curvilinear grid. Let's
say MIROC5.
hfds_Omon_MIROC5_rcp26_r1i1p1_200601-210012.nc
name title
I J K L
LAT latitude coordinate 1:256 1:224
... ...
LON longitude coordinate 1:256 1:224
... ...
LAT_VERTICES

1:4 1:256 1:224 ...
LON_VERTICES
1:4
1:256 1:224 ...
HFDS Downward Heat Flux at Sea Water 1:256 1:224 ... *1:1140*
Look at L(1:1140). We are now having the expected 1140 hfds data
(95yearX12month=1140).
Hence, hfds for CNRM-CM5 and NorESM1-M do not have sufficient data.
I hope I have described the problem correctly.

Best regards,
Kelin
____________
Kelin Zhuang
Department of Geosciences
The University of Arizona

On 02/08/2012 07:45 AM, CMIP5 Helpdesk wrote:
> [Duplicate message snipped]

Entered on 08/02/2012 at 14:45:07 GMT (GMT+0000) by Martin Juckes:
Hello,

I've checked the hfds_Omon_CNRM-CM5_historical_r1i1p1_200001-200512.nc file with ncview (a light weight command line visualisation tool) and it looks fine (image attached). The CDO library is also happy to take the data and regrid it onto a regular grid,

cheers,
Martin

Entered on 08/02/2012 at 08:45:06 GMT (GMT+0000) by stephane.senesi at meteo.fr:
Dear colleagues

This answer is prone to be re-used by the CMIP5 help desk against
further requests

Albeit NEMO-ORCA oceanic grid is not a regular lat-lon grid, it is a
curvilinear grid, which latitudes and longitudes fields (and vertices)
are duly included in all data files. AFAIK, this is compliant with CMIP5
requirements. Further, this complies with the CMIP5 recommendation to
provide the oceanic fields on the oceanic model grid. Some of these
fields alreay went through the CMIP5 Level3 Quality Control without any
remarks related to the grid.

You will encounter such a grid for all CMIP5 models which use the ORCA
grids in the NEMO/OPA oceanic model (AFAIK : CNRM-CM5, NorESM,
IPSL-xxx, EC-Earth) and which are also compliant with the CMIP5
recommendation regarding oceanic grid (AFAIK, HadGEM-xx and HadCM use
NEMO but do not apply the recommendation)

I recommend to use display tools which can manage this kind of grid.
This is e.g. the case of Panoply
(http://www.giss.nasa.gov/tools/panoply/), albeit it handles correctly
these files only from version 3.1 (nov 2011). I assume that VCDAT can
also display properly these files, using the proper settings. We use
CDAT and the AbstractCurveGrid function of the hgrid package for
handling this grid

Best regards

S

Covey, Curt wrote, On 08/02/2012 01:48:
> Dear Prof. Zhuang,
>
> Thanks for alerting us to this problem. I'm not sure what you mean by
> "latitude turns into depth," but when I look at the
> file hfds_Omon_CNRM-CM5_historical_r1i1p1_200001-200512.nc I see that
> instead of latitude and longitude the spatial coordinates are called
> Virtual-Latitude (j) and Virtual-Longitude (I). Further, when I try to
> plot the data using VCDAT, I get the following error message: "Unable
> to plot data! Please check data. Data must be either in integer or
> float format." Apparently something is wrong somewhere.
>
> I'm copying this message to our CNRM contacts, so that they can look
> into the problem.
>
> Sincerely,
>
> Curt Covey
> PCMDI
>
> From: "Taylor, Karl Taylor" <taylor13 at llnl.gov <mailto:taylor13 at llnl.gov>>
> Date: Mon, 6 Feb 2012 09:31:00 -0800
> To: "Painter, Jeff" <painter1 at llnl.gov <mailto:painter1 at llnl.gov>>,
> covey1 Covey <covey1 at llnl.gov <mailto:covey1 at llnl.gov>>
> Subject: Fwd: New Request: CMIP5 archive Question/Problem [ESG-PCMDI]
> hfds for CNRM-CM5 & NorESM1-M ISSUE=701 PROJ=17
>
> Do you get these messages?
> Karl
>
> -------- Original Message --------
> Subject: New Request: CMIP5 archive Question/Problem [ESG-PCMDI] hfds
> for CNRM-CM5 & NorESM1-M ISSUE=701 PROJ=17
> Date: Sun, 5 Feb 2012 20:03:00 -0800
> From: CMIP5 Helpdesk <cmip5-helpdesk at stfc.ac.uk>
> Reply-To: cmip5-helpdesk at stfc.ac.uk <cmip5-helpdesk at stfc.ac.uk>
> To: esg-support at earthsystemgrid.org <esg-support at earthsystemgrid.org>
>
>
>
> [Duplicate message snipped]

Entered on 06/02/2012 at 10:37:50 GMT (GMT+0000) by Graham Parton:
Dear Kelin,

I've passed on your query to those who may be able to assist. You will receive a response from them in the near future.

Regards,
Graham

Entered on 06/02/2012 at 04:09:05 GMT (GMT+0000) by Stephen Pascoe:
Thanyou for your email.

I am on leave until Wednesday February 9th. If you are lucky you may get my attention by email but otherwise I'll respond on my return.

Regards,
Stephen.

Entered on 06/02/2012 at 04:03:06 GMT (GMT+0000) by kzhuang at email.arizona.edu:
Downward Heat Flux at Sea Water Surface (hfds_Omon)
Dear Sir/Madam,
These days I have downloaded the Downward Heat Flux at Sea Water
Surfaceand and found that there might be errors for CNRM-CM5 &
NorESM1-M. The latitude turns into depth (e.g., CNRM-CM5, IXJXK
362*292*1 in thetao but hfds in IXJXK 362*1*292, which means latitude
turns into depth. NorESM1-M also has the same problem. And also there is
only one time data and it should have a time series data).
Would you kindly check these?

--
Best regards,
Kelin

____________
Kelin Zhuang
Department of Geosciences
The University of Arizona

Current Assignees: ScienceQuestionTeam, Karl Taylor

CC(s):

Query Information:

Internal comments:
Dear Martin and Karl,

Please can you answer the questions raise by this user?

Thanks,
Graham
Problem type:   Science & Metadata              Accessed Gateway:       ESG-PCMDI
User's Gateway:         ESG-PCMDI

Contact Information:

Email address:  kzhuang at email.arizona.edu<mailto:kzhuang at email.arizona.edu>

Attachments: cnrm_hfds.png
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