Climatologies at high resolution for the earth's land surface areas.

Climatologies at high resolution for the earth's land surface areas.
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DOI:
10.1038/sdata.2017.122
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发表时间:
2017-09-05
期刊:
影响因子:
9.8
通讯作者:
Kessler M
Kessler M
中科院分区:
综合性期刊2区
文献类型:
--
作者:
Karger DN;Conrad O;Böhner J;Kawohl T;Kreft H;Soria-Auza RW;Zimmermann NE;Linder HP;Kessler M

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High-resolution information on climatic conditions is essential to many applications in environmental and ecological sciences. Here we present the CHELSA (Climatologies at high resolution for the earth’s land surface areas) data of downscaled model output temperature and precipitation estimates of the ERA-Interim climatic reanalysis to a high resolution of 30 arc sec. The temperature algorithm is based on statistical downscaling of atmospheric temperatures. The precipitation algorithm incorporates orographic predictors including wind fields, valley exposition, and boundary layer height, with a subsequent bias correction. The resulting data consist of a monthly temperature and precipitation climatology for the years 1979–2013. We compare the data derived from the CHELSA algorithm with other standard gridded products and station data from the Global Historical Climate Network. We compare the performance of the new climatologies in species distribution modelling and show that we can increase the accuracy of species range predictions. We further show that CHELSA climatological data has a similar accuracy as other products for temperature, but that its predictions of precipitation patterns are better.
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