Hook, Simon: JPL (Project Lead)
Project Funding:
2011 - 2014
NRA: 2010 NASA: NPP Science Team for Climate Data Records
Funded by NASA
Abstract:
The stated goal of NASA's Earth Science Research Program is to utilize global measurements to understand the Earth system and its interactions as steps toward the prediction of Earth system behavior. NASA has identified the provision of well-calibrated, multiyear and multi-satellite data and product series as a key requirement for meeting this goal. The main objectives of this study are to validate the mid and thermal infrared data and product series from the Visible Infrared Imager Radiometer Suite (VIIRS) on the National Polar-orbiting Operational Environmental Satellite System (NPOESS) Preparatory Project (NPP) and cross validate these with similar products from MODIS and ASTER.
In order to validate these data and product series we have developed a set of automated validation sites that make all the necessary validation measurements on a near continuous basis (every 2 mins). Measurements include skin (radiometric) temperature and bulk (contact) temperature together with the standard meteorological variables: wind speed, wind direction, net radiation, air temperature and relative humidity. These same data are being used to validate the mid and thermal infrared data and products from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Moderate Resolution Imaging Spectroradiometer (MODIS). The ASTER instrument is on the Terra spacecraft and MODIS instruments are on the Terra and Aqua spacecraft. VIIRS is the follow-on instrument for MODIS. This work will enable a continuous and consistent validation record from the launch of Terra in 1999 through the launch of VIIRS on NPP in 2011.
The existing data have been used to validate the accuracy of the mid and thermal infrared at-sensor radiance measured by MODIS and ASTER as well as the surface temperature and emissivity products derived from the measured radiance. Various instrument artifacts have been identified and corrected thereby ensuring the data can potentially be used as Earth System Data Records (ESDRs) defined by NASA as a unified and coherent set of observations of a given parameter of the Earth system. We will continue our validation activities and conduct additional intensive campaigns shortly after the launch of the NPP spacecraft in 2011 to ensure the VIIRS mid and thermal infrared data and products are validated and any difference between them and the MODIS data are fully understood to ensure that VIIRS data can be used in addition to and ultimately in place of MODIS data in ESDRs.
2015 NASA Carbon Cycle & Ecosystems Joint Science Workshop Poster(s)
- HyspIRI, HyTES and ECOSTRESS
-- (Simon J. Hook, William R. Johnson, Pierre C. Guellivic)
[abstract]
2013 NASA Terrestrial Ecology Science Team Meeting Poster(s)
- Land Surface Temperature and Emissivity (LST&E) products and their uncertainties
-- (Glynn C. Hulley, Simon J. Hook)
[abstract]
2011 NASA Carbon Cycle & Ecosystems Joint Science Workshop Poster(s)
- Validation of Mid and Thermal Infrared Remotely Sensed Data In-Flight Using Automated Validation Sites at Lake Tahoe CA/NV, USA and Salton Sea CA, USA
-- (Simon J. Hook)
[abstract]
More details may be found in the following project profile(s):
