[ISO_Topic_Category='IMAGERY/BASE MAPS/EARTH COVER']
SAFARI 2000 AVHRR-DERIVED LAND SURFACE TEMPERATURE MAPS, AFRICA, 1995-2000Entry ID: S2K_RS_AVHRRLST_IMAGERY
Abstract: Land Surface Temperature (LST) is a key indicator of land surface states, and can provide information on surface-atmosphere heat and mass fluxes, vegetation water stress, and soil moisture. A daily, day and night, LST data set for continental Africa, including Madagascar, was derived from Advanced Very High Resolution Radiometer (AVHRR) Global Area Coverage (GAC; 4 km resolution) data for the ... 6-year lifetime of the NOAA-14 satellite (from 1995 to 2000) using a modified version of the Global Inventory Mapping and Monitoring System (GIMMS) (Tucker et al., 1994). The data were projected into Albers Equal Area and aggregated to 8 km spatial resolution. The data were cloud-filtered with CLAVR-1 algorithm (Stowe et al., 1999). The LST values were estimated with a split-window technique (Ulivieri et al., 1994) that takes advantage of differential absorption of the thermal infrared signal in bands 4 and 5. The emissivity of the surface was generated using a land cover classification map (Hansen et al., 2000) combined with the FAO soil map of Africa (FAO-UNESCO, 1977) and additional maps of tree, herbaceous, and bare soil percent cover (DeFries et al., 2000). Collateral products include cloud mask, time-of-scan, latitude and longitude, and land/water mask files.The data are in flat binary files. Each data file contains 1152 columns and 1152 rows, in signed integer format (2 bytes), with 8 km by 8 km spatial resolution. A unique map exists for each day and each night of the 6-year NOAA-14 lifetime. The data are best used to infer broad temporal and spatial trends rather than pixel-by-pixel values.
(Click for Interactive Map)
Data Set Citation
Dataset Originator/Creator: PINHEIRO, A.C.
Dataset Title: SAFARI 2000 AVHRR-DERIVED LAND SURFACE TEMPERATURE MAPS, AFRICA, 1995-2000
Dataset Release Date: 2006
Dataset Release Place: Oak Ridge, Tennessee, U.S.A.
Dataset Publisher: Oak Ridge National Laboratory Distributed Active Archive Center
Data Presentation Form: Online Files
Dataset DOI: doi:10.3334/ORNLDAAC/826Online Resource: http://mercury.ornl.gov/ornldaac/send/query?term2=826&term2attribut...
Start Date: 1995-01-01Stop Date: 2000-12-31
ISO Topic Category
Distribution Media: internet
Distribution Format: text
Yu, J., H. Liu, K. Jezek, and R. Warner. Detailed Mass Balance Analysis of the
Lambert Glacier Amery Ice Shelf System by Incorporating Radarsat Interferometry
and ICESat Laser Altimetry Data. Submitted to Journal of Geophysical Research
Liu, H., J. Yu, Z. Zhao, and K. Jezek. Calibrating and Mosaicking Surface
Velocity Measurements from Interferometric SAR Data with ... a Simultaneous
Least-squares Adjustment Approach. International Journal of Remote Sensing (in
Liu, H. Z. Zhao, and K. Jezek, 2004. Correction of positional errors and
geometric distortions in topographical maps and DEMs using rigorous SAR
simulation technique. Photogrammetric Engineering and Remote Sensing, 70(9),
Liu, H., 2003. Derivation of surface topography and terrain parameters from
single satellite image using shape-from-shading technique. Computers &
Geosciences, 29, 1229-1239. (2003 Best Paper Award)
Liu, H., L. Wang, and K. Jezek. Delineation of Dry and Melt Snow Zones using
Active and Passive Microwave Observations from Space. Submitted to IEEE
Transactions on Geoscience and Remote Sensing, 44(8), 2152-2163.
Creation and Review Dates
DIF Creation Date: 2006-08-15
Last DIF Revision Date: 2009-01-08