NASA Logo, External Link
Facebook icon, External Link to NASA STI page on Facebook Twitter icon, External Link to NASA STI on Twitter YouTube icon, External Link to NASA STI Channel on YouTube RSS icon, External Link to New NASA STI RSS Feed AddThis share icon
 

Record Details

Record 1 of 1
Status and Plans for Reanalysis at NASA/GMAO
NTRS Full-Text: Click to View  [PDF Size: 8.3 MB]
Author and Affiliation:
Gelaro, Ron(NASA Goddard Space Flight Center, Greenbelt, MD, United States)
Abstract: Reanalysis plays a critical role in GMAOs goal to enhance NASA's program of Earth observations, providing vital data sets for climate research and the development of future missions. As the breadth of NASAs observations expands to include multiple components of the Earth system, so does the need to assimilate observations from currently uncoupled components of the system in a more physically consistent manner. GMAOs most recent reanalysis of the satellite era, MERRA-2, has completed the period 1980-present, and is now running as a continuing global climate analysis with two- to three-week latency. MERRA-2 assimilates meteorological and aerosol observations as a weakly coupled assimilation system as a first step toward GMAOs longer term goal of developing an integrated Earth system analysis (IESA) capability that will couple assimilation systems for the atmosphere, ocean, land and chemistry. The GMAO strategy is to progress incrementally toward an IESA through an evolving combination of coupled systems and offline component reanalyses driven by, for example, MERRA-2 atmospheric forcing. Most recently, the GMAO has implemented a weakly coupled assimilation scheme for analyzing ocean skin temperature within the existing atmospheric analysis. The scheme uses background fields from a near-surface ocean diurnal layer model to assimilate surface-sensitive radiances plus in-situ observations along with all other observations in the atmospheric assimilation system. In addition, MERRA-2-driven simulations of the ocean (plus sea ice) and atmospheric chemistry (for the EOS period) are currently underway, as is the development of a coupled atmosphere-ocean assimilation system. This talk will describe the status of these ongoing efforts and the planned steps toward an IESA capability for climate research.
Publication Date: Nov 13, 2017
Document ID:
20170011574
(Acquired Dec 15, 2017)
Subject Category: GEOSCIENCES (GENERAL); EARTH RESOURCES AND REMOTE SENSING
Report/Patent Number: GSFC-E-DAA-TN50124
Document Type: Oral/Visual Presentation
Meeting Information: International Conference on Reanalysis; 5th; 13-17 Nov. 2017; Rome; Italy
Meeting Sponsor: European Centre for Medium-Range Weather Forecasts; Reading, United Kingdom
Financial Sponsor: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Description: 13p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: No Copyright; Work of the U.S. Government - Public use permitted
NASA Terms: AEROSOLS; ATMOSPHERIC CHEMISTRY; CLIMATE; DIURNAL VARIATIONS; METEOROLOGICAL PARAMETERS; OCEAN MODELS; SEA ICE; SYSTEMS ANALYSIS; THREE DIMENSIONAL MODELS; AIR WATER INTERACTIONS; CLIMATOLOGY; MARINE CHEMISTRY; NASA PROGRAMS; OCEAN TEMPERATURE; SYSTEMS INTEGRATION; THREE DIMENSIONAL MOTION
Other Descriptors: MERRA-2; IES
› Back to Top
Find Similar Records
NASA Logo, External Link
NASA Official: Gerald Steeman
Site Curator: STI Program
Last Modified: December 15, 2017
Contact Us