ISLSCP II GLOBAL GRIDDED GROSS DOMESTIC PRODUCT (GDP), 1990

The data sets in this directory were provided by Mr. Gregory Yetman and Drs. Stuart Gaffin and Deborah Balk from the Center for International Earth Science Information Network (CIESIN) at Columbia University. There are three data files at three spatial resolutions of 0.25, 0.5 and 1.0 degree in both latitude and longitude and for the reference year of 1990. Estimates of Gross Domestic Product (GDP) are commonly given for nations as a single aggregated number. This data set generates estimates of GDP density distributed subnationally to facilitate the integration of GDP with other data at a sub-national level and to promote interdisciplinary studies that include socioeconomic aspects. This is one of two coarse resolution Socioeconomic data sets included in the International Satellite Land Surface Climatology Project (ISLSCP) Initiative II data collection, the other being the Gridded Population of the World (GPW), also produced by CIESIN.本目录下的数据集由哥伦比亚大学国际地球科学信息网络中心（Center for International Earth Science Information Network, CIESIN）的Gregory Yetman先生、Stuart Gaffin博士与Deborah Balk博士提供。本次收录的数据文件共3份，空间分辨率分别为经纬度0.25度、0.5度与1.0度，基准年设定为1990年。 国内生产总值（Gross Domestic Product, GDP）的估算通常以单一汇总数值的形式面向国家层面发布。本数据集生成次国家级的GDP密度估算结果，旨在助力GDP与其他次国家级层面数据的整合，并推动包含社会经济维度的跨学科研究。本数据集为收录于国际卫星陆面气候学计划（International Satellite Land Surface Climatology Project, ISLSCP）第二阶段数据合集中的两套粗分辨率社会经济数据集之一，另一套为同样由CIESIN编制的世界栅格人口数据（Gridded Population of the World, GPW）。