CEDAR email: CEDAR session: local-scale auroral assimilation

[Kristina A. Lynch]

Cedar community:

Please consider participating in our session on



Assimilating auroral ionospheric observations:

remote sensing, in situ observations, and local-scale and global modelling


during the Thursday afternoon block (4-6 pm).  See

http://cedarweb.vsp.ucar.edu/wiki/index.php/2017_Workshop:Assimilating_auroral_observations



The Poker 2017 auroral rocket campaign has brought together a large science team focussed on synergistic use of models and data with an eye toward developing assimilative analysis strategies for these types of experiments.  We would like to continue and expand upon the collaborations formed during the campaign.


Science challenge:  how do we combine varied observational data sources to best effect in feeding local-scale and global models of the auroral ionospheric system?

i. Associated questions to be addressed involve the system science of the lower auroral ionosphere and its coupling both to the magnetosphere through currents, and to the thermosphere through winds.

ii.  Existing resources include a variety of conjugate observation case studies, and existing assimilative models.  Planned/needed resources include more fully developed and capable assimilative models, as well as good plans for incorporating different data sources into them.

iii.  Progress metrics:  Conjugate studies as described here allow for a test of the models’ intepretation by comparing to in situ data.  A metric for progress is the extent to which the developed/improved models can be used to interpret remote sensing data with confidence without the checkpoint of in situ comparison.


Agenda:


Assimilating auroral ionospheric observations:

remote sensing, in situ observations, and local-scale and global modelling


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I....4:00-4:15


Overview group:

--->Lynch, Isinglass campaign

--->Pfaff/Clemmons, Jets campaign


II.....4:15-4:35


Previous assimilative examples group:

--->Zettergren to introduce

--->Schierless, examples of assimilated data modelling

--->Chartier, assimilative example:  TEC/neutrals


III.....4:35-5:25


Local data combine/compare group:

Local-scale estimation and sort of assimilation, combining/comparing disparate data sets

--->Don Hampton organizing

--->Pfaff Jets team, groundbased and in situ and imagery comparisons

--->Gillies, SuperDARN+RISR

--->Isinglass team,  groundbased and in situ and imagery comparisons


IV.....5:25-5:45


local scale modelling group:

--->Zettergren organizing

--->Walterscheid, thermosphere-ionosphere modeling

--->Grubbs, Burleigh, auroral inversions and radar modelling


V.......5:45-6:00


discussion moderators:

--->Lynch/Zettergren/Pfaff/Varney/Hysell


Panel discussion goal/focus:

• local scale assimilative techniques panel discussion.

• Strategies for and challenges with developing local-scale data assimilation methods

• Science questions that can benefit from local scale assimilation - we will solicit suggestions from likely participants beforehand and put up a list to talk around.

• what local scale assimilative strategy might look like and some of the challenges.

• guided discussion of progress and future plans; guided discussion of development of analysis metrics and plan.

• proposal for some sort of explicit CEDAR effort/challenge/workinggroup


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