학술논문
Drought losses in China might double between the 1.5 [degrees]C and 2.0 [degrees]C warming
Document Type
Report
Author
Source
Proceedings of the National Academy of Sciences of the United States. October 16, 2018, Vol. 115 Issue 42, p10600, 6 p.
Subject
Language
English
ISSN
0027-8424
Abstract
We project drought losses in China under global temperature increase of 1.5 [degrees]C and 2.0 [degrees]C, based on the Standardized Precipitation Evapotranspiration Index (SPEI) and the Palmer Drought Severity Index (PDSI), a cluster analysis method, and 'intensity-loss rate' function. In contrast to earlier studies, to project the drought losses, we predict the regional gross domestic product under shared socioeconomic pathways instead of using a static socioeconomic scenario. We identify increasing precipitation and evapotranspiration pattern for the 1.5 [degrees]C and 2.0 [degrees]C global warming above the preindustrial at 2020-2039 and 2040-2059, respectively. With increasing drought intensity and areal coverage across China, drought losses will soar. The estimated loss in a sustainable development pathway at the 1.5 [degrees]C warming level increases 10-fold in comparison with the reference period 1986-2005 and nearly threefold relative to the interval 2006-2015. However, limiting the temperature increase to 1.5 [degrees]C can reduce the annual drought losses in China by several tens of billions of US dollars, compared with the 2.0 [degrees]C warming. drought | drought losses | projections | global warming | China