Global Gridded Geographically Based Economic Data (G-Econ), Version 4

The Global Gridded Geographically Based Economic Data (G-Econ), Version 4 contains derived one degree grid cells of Gross Domestic Product (GDP) data in Grid and ASCII formats for both Market Exchange Rate (MER) and Purchasing Power Parity (PPP) for the years 1990, 1995, 2000 and 2005. MER is the exchange rate between local and U.S. dollar currencies for a given time period established by the market. PPP is the exchange rate between a country's currency and U.S. dollars adjusted to reflect the actual cost in U.S. dollars of purchasing a standardized market basket of goods in that country using the country's currency. The original data from the G-Econ Project at Yale University is also available in tabular format and includes latitude and longitude geographic coordinates of the grid cells, area of grid cells, as well as country names, distance to coast, elevation, vegetation, population, precipitation and temperature.

全球基于地理的网格化经济数据集（G-Econ），版本4，包含基于一度网格的国内生产总值（GDP）数据，以网格和ASCII格式提供，涵盖市场汇率（MER）和购买力平价（PPP）两种汇率，时间跨度为1990年、1995年、2000年和2005年。市场汇率（MER）是指在特定时间段内由市场确立的本地货币与美元之间的汇率。购买力平价（PPP）则是将一国的货币与美元之间的汇率进行调整，以反映在该国使用本国货币购买标准市场篮子商品的实际美元成本。耶鲁大学G-Econ项目原始数据亦以表格格式提供，包括网格单元的纬度和经度地理坐标、网格单元面积、国家名称、海岸距离、海拔、植被、人口、降水量和温度等信息。