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The SMAP Level-4 ECO Project: Linking the Terrestrial Water and Carbon CyclesThe SMAP (Soil Moisture Active Passive) Level-4 projects aims to develop a fully coupled hydrology-vegetation data assimilation algorithm to generate improved estimates of modeled hydrological fields and carbon fluxes. This includes using the new NASA Catchment-CN (Catchment-Carbon-Nitrogen) model, which combines the Catchment land surface hydrology model with dynamic vegetation components from the Community Land Model version 4 (CLM4). As such, Catchment-CN allows a more realistic, fully coupled feedback between the land hydrology and the biosphere. The L4 ECO project further aims to inform the model through the assimilation of Soil Moisture Active Passive (SMAP) brightness temperature observations as well as observations of Moderate Resolution Imaging Spectroradiometer (MODIS) fraction of absorbed photosynthetically active radiation (FPAR). Preliminary results show that the assimilation of SMAP observations leads to consistent improvements in the model soil moisture skill. An evaluation of the Catchment-CN modeled vegetation characteristics showed that a calibration of the model's vegetation parameters is required before an assimilation of MODIS FPAR observations is feasible.
Document ID
20170010659
Acquisition Source
Goddard Space Flight Center
Document Type
Presentation
Authors
Kolassa, J.
(Universities Space Research Association Greenbelt, MD, United States)
Reichle, R. H.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Liu, Qing
(Science Systems and Applications, Inc. Greenbelt, MD, United States)
Koster, Randal D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
November 7, 2017
Publication Date
October 20, 2017
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
GSFC-E-DAA-TN48314
Meeting Information
Meeting: Science Utilization of SMAP (SUSMAP) Meeting
Location: Cambridge, MA
Country: United States
Start Date: October 19, 2017
End Date: October 20, 2017
Sponsors: NASA Headquarters
Funding Number(s)
CONTRACT_GRANT: NNG17HP01C
CONTRACT_GRANT: NNG11HP16A
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
MODIS
CLM
SMAP
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