Estimates of primary productivity over the Thar Desert based upon Nimbus-7 37 GHz data: 1979-1985
- 1 December 1987
- journal article
- research article
- Published by Taylor & Francis in International Journal of Remote Sensing
- Vol. 8 (12), 1885-1890
- https://doi.org/10.1080/01431168708954831
Abstract
An empirical relationship is developed between the difference of vertically and horizontally polarized brightness temperatures (ΔT) observed at 37 GHz frequency of the Scanning Multichannel Microwave Radiometer (SMMR) on board the Nimbus-7 satellite and primary productivity over hot arid and semi-arid regions of Africa and Australia. The primary productivity values for this empirical relationship are calculated according to Leith (1975). The empirical relationship is then used, together with the observed ΔT, to estimate primary productivity over a roughly 60000 km2 area in the Thar Desert from 1979 to 1985. The highest areally averaged productivity of 0.368kgm−2 yr−1 is estimated for 1979, while the lowest 0.222kgm−2 yr−1 for 1985; the average for the 7 years being 0.271 kgm−2 yr−1. The spatial variability of the productivity values within the study area is found to be quite substantial; the standard deviation about the mean being about 008kgm−2yr−1.Keywords
This publication has 12 references indexed in Scilit:
- Monitoring global vegetation using Nimbus-7 37 GHz Data Some empirical relationsInternational Journal of Remote Sensing, 1987
- Monitoring vegetation using Nimbus-7 scanning multichannel microwave radiometer's dataInternational Journal of Remote Sensing, 1987
- Comparison of North and South American biomes from AVHRR observationsGeocarto International, 1987
- Satellite remote sensing of rangelands in Botswana II. NOAA AVHRR and herbaceous vegetationInternational Journal of Remote Sensing, 1986
- Monitoring the grasslands of the Sahel using NOAA AVHRR data: Niger 1983International Journal of Remote Sensing, 1986
- Cover Maximum normalized difference vegetation index images for sub-Saharan Africa for 1983-1985International Journal of Remote Sensing, 1986
- North American vegetation patterns observed with the NOAA-7 advanced very high resolution radiometerPlant Ecology, 1985
- Satellite remote sensing of total herbaceous biomass production in the senegalese sahel: 1980–1984Remote Sensing of Environment, 1985
- The Biosphere and ManPublished by Springer Nature ,1975
- Modeling the Primary Productivity of the WorldPublished by Springer Nature ,1975