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Abstract

The spatio-temporal variability of surface properties is analysed using 63 NOAA AVHRR images. These images were selected from the period November 1986 to March 1989 for a study area of roughly 260,000 square kilometres covering large parts of Southern Mali. The developed methodology is seen as a first step towards an improved parametrisation of surface processes in climate models by providing information on the spatial and temporal characteristics of the surface temperature, the albedo and the Normalised Difference Vegetation Index (NDVI). The study demonstrates that AVHRR data allow for the characterisation of the spatio-temporal variability of surface properties at scales adequate for the description of large regions. Results are presented in the form of graphs illustrating the temporal evolution of the surface properties and their spatial characteristics, and as images showing the geographical distribution of the derived spatial characteristics over the whole region of the study.

Additional information

Authors: VOGT J, JRC Ispra (IT)
Bibliographic Reference: EUR 14637 EN (1992) 266 pp., FS, free of charge
Availability: Available from Joint Research Centre, Publication Department, I-21020 Ispra (Va.) (IT)
Record Number: 199511034 / Last updated on: 1995-08-18
Category: PUBLICATION
Original language: en
Available languages: en