Data set of driving factors of spring agricultural drought in Northeast China

Description

The distribution range of the study area is 39.75°N to 53.25°N latitude and 115.75°E to 134.25°E longitude. The data sampling interval was 0.5 degrees, and a total of 566 sampling points were obtained on the basis of terrain characteristics. Each sampling point obtained indicators such as precipitation, evapotranspiration, snow depth, and soil moisture over 41 years from 1980 to 2020. The data are sourced from the China Meteorological Data Network (China National Meteorological Science Data Center, https://data.cma.cn/). The reference area is located at 45.75°N latitude, and the A period is from October 9th to November 8th, totaling 31 days. The B period is from November 9th to January 14th of the following year, totaling 67 days. The C period is from January 15th to March 24th, totaling 69 days. The D period is from March 25th to May 2nd, totaling 39 days. Owing to the influence of latitude, high-latitude regions have lower temperatures and longer stable freezing periods, resulting in an earlier A period and a later D period. For every 0.5 degree increase in latitude, period A advances by 1 day, period D is delayed by 1 day, and the total number of days increases by 2 days. In terms of time allocation in different periods, the number of days in periods A, B, and D remains unchanged, and the difference of 2 days between different latitudes is reflected only in period C. The average values of precipitation, evapotranspiration, and snow depth for each period are used as indicator values. See the first line of the data file for the specific driver indicator name.

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