Skip to main content
ORNL DAAC HomeNASA Home

DAAC Home > Get Data > NASA Projects > Southern African Regional Science Initiative Project (SAFARI 2000) > Landing page

SAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000

Overview

DOIhttps://doi.org/10.3334/ORNLDAAC/826
Project
Published2006-01-06
Updated2006-01-06
Usage378 downloads
Citations1 publication cited this dataset

Description

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.

Science Keywords

  • ATMOSPHERE
  • ATMOSPHERIC RADIATION
  • EMISSIVITY
  • LAND SURFACE
  • LAND USE/LAND COVER
  • LAND USE/LAND COVER CLASSIFICATION
  • LAND SURFACE
  • SURFACE THERMAL PROPERTIES
  • LAND SURFACE TEMPERATURE

Data Use and Citation

This dataset is openly shared, without restriction, in accordance with the NASA Data and Information Policy.

Download citation from Datacite
RISBibTexOther
Crosscite Citation Formatter
Pinheiro, A.C. 2005. SAFARI 2000 AVHRR-derived Land Surface Temperature Maps, Africa, 1995-2000. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/826

See our Data Citations and Acknowledgements policy for more information.

Data Files

Sign in to download files.

Companion Files

Expand for companion files
Toggle Companion Files

Sign in to download files.

Dataset has 1 companion files.

  • AVHRR_LST_readme.pdf