Drought severity change in China during 1961–2012 indicated by SPI and SPEI

Are droughts becoming more frequent or severe in China based on the Standardized Precipitation Evapotranspiration Index: 1951-2010?

(2013) Meixiu Yu et al.   INTERNATIONAL JOURNAL OF CLIMATOLOGY

A scPDSI-based global data set of dry and wet spells for 1901-2009

(2013) G. van der Schrier et al.   JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES

Changes in the Duration of European Wet and Dry Spells during the Last 60 Years

(2012) Olga Zolina et al.   JOURNAL OF CLIMATE

Little change in global drought over the past 60 years

(2012) Justin Sheffield et al.   NATURE

Increasing drought under global warming in observations and models

(2012) Aiguo Dai   Nature Climate Change

Assessing spatiotemporal variability of drought in the U.S. central plains

(2009) K.E. Logan et al.   JOURNAL OF ARID ENVIRONMENTS

Spatial Variation and Trends in PDSI and SPI Indices and Their Relation to Streamflow in 10 Large Regions of China

(2009) Jianqing Zhai et al.   JOURNAL OF CLIMATE

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

(2009) Sergio M. Vicente-Serrano et al.   JOURNAL OF CLIMATE