Wolfe, Robert: NASA GSFC (Project Lead)
Project Funding:
2008 - 2011
NRA: 2006 NASA: EOS
Funded by NASA
Abstract:
Over the past eight years, the MODIS Land Science Team has developed a validation infrastructure that supports key activities needed to determine the accuracy of its global land products. These include resource support of the EOS Land Validation Core Sites, coordination of EOS, MODIS and other NASA-funded land validation activities, and international leadership of efforts to establish standardized validation protocols and global land product inter-comparisons associated with NASA’s priority land products.
The proposed work will continue and enhance this infrastructure to maintain validation support for current EOS global land products as well as forthcoming land products from the NPOESS Preparatory Project (NPP, launch ~2006) and National Polar Orbiting Environmental Sensing System (NPOESS; launches starting ~2010). One of the ultimate objectives of the proposed work is to utilize the multi-resolution, multi-temporal data sets derived from validation studies to conduct model sensitivity studies. The EOS land validation cores sites and associated data sets provide fertile ground to test the impact of different land characterizations on climate and energy models.
Until now, MODIS land validation studies have focused on comparison to more accurate, higher-resolution products and using this comparison to quantify the MODIS product accuracy. This is certainly a critical exercise. However, we are now at the point where we can, and should, evaluate the implication of a product’s accuracy when used in a given model. We will partner with modelers within the North American Carbon Program (NACP) and the Coordinated Earth Observing Period (CEOP). This will allow us to test the sensitivity of carbon, hydrological, and energy models to land parameter input. These will vary within the range of the product's uncertainty and have various spatial resolutions. The input will come directly from validation data and will provide a quantitative assessment of how well the current set of MODIS land products meet modeling needs and where improvements would result in the largest gains.
2010 NASA Terrestrial Ecology Science Team Meeting Poster(s)
- MODIS Land Validation: Data Availability and Product Status Update
-- (Joanne M Nightingale, Jaime E Nickeson, Robert E Wolfe)
[abstract]
More details may be found in the following project profile(s):
