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

The Global Gridded Geographically Based Economic Data (G-Econ), Version 4 contains derived gridded one by one degree 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.全球网格化地理经济数据（Global Gridded Geographically Based Economic Data，简称G-Econ）第4版包含衍生的1°×1°网格化国内生产总值（GDP）数据集，涵盖市场汇率（Market Exchange Rate，简称MER）与购买力平价（Purchasing Power Parity，简称PPP）两种统计口径，数据格式为GRID与ASCII，覆盖1990、1995、2000及2005四个年份。市场汇率是指特定时期内由市场决定的本币与美元之间的兑换比率。购买力平价汇率则是经调整后的本币与美元汇率，用于体现以该国本币购买一篮子标准化商品的实际美元购置成本。耶鲁大学G-Econ项目的原始数据亦提供表格格式，包含网格单元的经纬度地理坐标、网格单元面积，以及国家名称、距海岸距离、海拔、植被、人口、降水量与气温等信息。

搜集汇总

背景与挑战

背景概述

该数据集是一个全球网格化地理经济数据集（第四版），提供以1度×1度网格为单位的国内生产总值（GDP）数据，涵盖市场汇率（MER）和购买力平价（PPP）两种计算方式，时间跨度为1990年至2005年的四个年份。数据集特点包括高空间分辨率、多种经济指标（如GDP）和丰富的辅助地理变量（如地理坐标、人口、气候数据），适用于全球经济和地理空间分析。