Spatiotemporal variability analysis of standardized precipitation indexed droughts using wavelet transform

A Practical Guide to Wavelet Analysis

Christopher Torrence, Gilbert P. Compo · Bulletin of the American Meteorological Society · 1998 · 14.9K citations · Full text

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A Multiscalar Drought Index Sensitive to Global Warming: The Standardized Precipitation Evapotranspiration Index

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THE RELATIONSHIP OF DROUGHT FREQUENCY AND DURATION TO TIME SCALES

Thomas B. McKee, Nolan J. Doesken, John Kleist · 1993 · 7.5K citations

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Power of the Mann–Kendall and Spearman's rho tests for detecting monotonic trends in hydrological series

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Application of vegetation index and brightness temperature for drought detection

Felix Kogan · Advances in Space Research · 1995 · 1.4K citations

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