THE POSSIBILITY OF USE OF SATELLITE DATA BY THE ASSESSMENT OF DROUGHT CONDITIONS IN KAZAKHSTAN
Keywords:
remote sensing, vegetation indices, multi-year series, hydrothermal coefficientAbstract
The possibility of using satellite data for analysis of weather conditions, assessment of dryness in Kazakhstan by analogy with terrestrial aridity index (hydrothermal coefficient HTC) were studied. The scheme of calculating vegetation indices (VI) in the vicinity of weather stations to determine a correlations of terrestrial and satellite indices of aridity was developed.
The calculations of the correlation coefficients between the HTC and the VI indices for 37 regions of the northern regions of Kazakhstan was made. It is shown that the integral vegetation indexes, having a sufficiently high closeness of the connection due to HTC may be used as the satellite analogues of this index. This fact allows you to confidently use vegetation indexes in the analysis of the impact of weather conditions on the condition of vegetation in the absence of ground data.
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