AWARD
A -- RECOVERY GMAO SUPPORT
- Notice Date
- 12/17/2009
- Notice Type
- Award Notice
- NAICS
- 541512
— Computer Systems Design Services
- Contracting Office
- NASA/Goddard Space Flight Center, Code 210.Y, Greenbelt, MD 20771
- ZIP Code
- 20771
- Solicitation Number
- ARRATask22GMAO
- Response Due
- 11/23/2009
- Archive Date
- 10/29/2010
- Point of Contact
- Carol R Dibble, Contract Specialist, Phone 301-614-5588, Fax 301-614-5619, Email Carol.R.Dibble@nasa.gov - Nipa Shah, Contracting Officer, Phone 301-286-4988, Fax 301-286-5373, Email nipa.shah@nasa.gov
- E-Mail Address
-
Carol R Dibble
(Carol.R.Dibble@nasa.gov)
- Small Business Set-Aside
- N/A
- Award Number
- NNG06HX04C-Task22
- Award Date
- 12/9/2009
- Awardee
- Science Applications Intl Corp. Mail Stop 1300 Crystal Gate #4 200 12th StreetS. Suite 1500 Arlington, VA 22202
- Award Amount
- 607000
- Line Number
- 002
- Description
- NASA/GSFC has a requirement that will be filled under Task 22, of Contract No.NNG06HX04C, for the Global Modeling and Assimilation Office (GMAO) which undertakesresearch and development to maximize the impact of satellite observations in climate,weather and atmospheric composition prediction. Global models and their associated dataassimilation systems are used to incorporate observations to improve the estimates of thestate of the atmosphere, ocean, or land surface made through model simulations (stateestimates). To achieve this goal, the GMAO undertakes model and assimilationdevelopment, generates products to support NASA instrument teams and NASA's Earth sceinceprogram, and undertakes scientific research to inform system development pathways. Assimilation systems have been developed for the atmosphere, ocean, and land surface. The long-term goal is an Integrated Earth System Model and Assimilation System wherin theindividual components are treated in a more interactive manner. The GMAO represents NASAas one of the partners in the Joint Center for Satellite Data Assimilation (JCSDA) withthe goal of accelerating the transition of NASA satellite information into operationalapplications.<P>One of the recent meteorological products generated by the GMAO is the Modern EraRetrospective analysis for Reaearch and Applications (MERRA) from the assimilation ofhistorical atmospheric data (from 1979 to the present). These data focus on the modernera, i.e., the satellite era. MERRA has been generated with the Goddard Earth ObservingSystem (GEOS) model, version 5 (GEOS-5) and its associated atmospheric analysis system,the Grid-point Statistical Interpolation (GSI), developed in collaboration with theNOAA/National Centers for Environmental Prediction. The GEOS-5 system software includesa tool - referred to as the "replay" - which allows the ingest of an existing analysis,like MERRA, into the model as it is running in simulation mode. This replay thuscontrains the model close to the analysis as if it were undertaking assimilation.<P>GEOS-5 is coupled with the Goddard Chemistry Aerosol Radiation and Transport (GOCART)model so that GEOS-5 meteorological states can be used to transport aerosol fields. Itis also coupled with the Global Modeling Initiative (GMI) chemistry model so thattropospheric and stratospheric trace gases (such as ozone and carbon monoxide) can bemodeled. The replay capability of GEOS-5 allows us to simulate aerosol and chemistryvariations consistent with GEOS-5 meteorological analysis from assimilation. <P>The task using ARRA funds supports the GMAO's activities and the support requirments arebroken down in 3 subtasks:<P>(a) Progress towards an Integrated Earth System Analysis by undertaking simulations withthe GEOS-5 model coupled to both GOCART (for aerosols) and GMI (for trace gas chemistry),using the replay technique with the MERRA meteorological forcing;<P>(b) Advances in the assimilation of Advanced Infra-Red Sounder (AIRS) and microwave limbsounder (MLS) radiance data into the GEOS-5 atmospheric data assimilation system (DAS),and <P>(c) Use of MERRA to contribute to improving cloud and convection parameterizations byplacing satellite data in a meteorological context and expanding the parameter spaceexplored by a single column model (SCM) version of GEOS-5 and cloud resolving model (CRM)simulations to be conducted by the Mesoscale Atmospheric Processes Branch.<P>NASA/GSFC has awarded Task 22 under Contract NNG06HX04C with Science Applications IntlCorp. Contract No. NNG06HX04C with Science Applications International Corporation (SAIC)is a cost plus award fee contract and was awarded on December 28, 2005, on a competitivebasis.This work could not be performed on a fixed price basis due to variability ofresearch and projects and also due to the nature of R&D work and a reasonable estimate ofthe cost impact could not be made.
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