R10 region mask based on IPCC AR6 WG3 and ISIMIP

region_classification.tsv: Tab-separated value file of ISO3 code, country name and the R10 mapping used. r10masks_fractional.nc: 0.5° grid of fractions of grid cell that is part of one of 10 world regions as defined by IPCC Working Group 3. The "region" variable is a dimension (11, 360, 720) variable. The first axis is the fraction (0-1 scale) of the grid cell at latitude and longitude (defined by second and third axis) falling into each world region. Values of first axis correspond to following regions defined in the country mappings file: 0=South-East Asia and developing Pacific 1=Eurasia 2=Asia-Pacific 3=Africa 4=Middle East 5=Latin America and Caribbean 6=North America 7=Eastern Asia 8=Southern Asia 9=Europe 10=World (all land, excluding Antarctica, and the sum of fractions in 0-9). Oceans and inland lakes are not counted within countries/regions. The starting point for this data is the 0.5° country mask from Perrette (2023). Country mappings in the TSV file follow the prescription of IPCC Working Group 3 Annex II (Al Khourdajie et al. 2022) where possible. Some ambiguities exist with regards to post-colonial, geographically detached, and disputed territories which are not explicitly defined in Annex II. These have been grouped by geographic rather than political region (example: French Guiana is classified as Latin America & Caribbean, which it is most definitely geographically part of, rather than Europe, which it is politically part of). Perette, 2023: ISI-MIP/isipedia-countries (v2.6). GitHub repository. https://github.com/ISI-MIP/isipedia-countries/releases/tag/v2.6 Al Khourdajie et al., 2022: Annex II: Definitions, Units and Conventions [Al Khourdajie, A., R. van Diemen, W.F. Lamb, M. Pathak, A. Reisinger, S. de la Rue du Can, J. Skea, R. Slade, S. Some, L. Steg (eds)]. In IPCC, 2022: Climate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change [P.R. Shukla, J. Skea, R. Slade, A. Al Khourdajie, R. van Diemen, D. McCollum, M. Pathak, S. Some, P. Vyas, R. Fradera, M. Belkacemi, A. Hasija, G. Lisboa, S. Luz, J. Malley, (eds.)]. Cambridge University Press, Cambridge, UK and New York, NY, USA. doi: 10.1017/9781009157926.021

region_classification.tsv：包含ISO3代码、国家名称及所用R10映射的制表符分隔值（Tab-separated value, TSV）文件。
r10masks_fractional.nc：0.5°分辨率格网数据集，用于表征每个格网单元格落入政府间气候变化专门委员会（IPCC）第三工作组划定的10个全球区域之一的占比。其中"region"为维度变量，维度尺寸为(11, 360, 720)：第一轴代表经纬度（由第二、第三轴定义）对应的格网单元格落入各全球区域的占比，取值范围为0~1。第一轴的取值对应国家映射文件中定义的如下区域：0=东南亚及发展中太平洋地区，1=欧亚大陆，2=亚太地区，3=非洲，4=中东，5=拉丁美洲及加勒比地区，6=北美，7=东亚，8=南亚，9=欧洲，10=全球（除南极洲外所有陆地区域，即0~9区域占比之和）。海洋与内陆湖泊不计入国家/区域的统计范围。
本数据集的基础数据源源自Perrette（2023）发布的0.5°分辨率国家掩码数据。TSV文件中的国家映射规则尽可能遵循IPCC第三工作组附件二（Al Khourdajie等，2022）的相关规定。由于附件二未明确界定后殖民领土、地理飞地及存在争议的区域，此类区域均按地理边界而非政治边界进行归类，例如法属圭亚那被归类为拉丁美洲及加勒比地区——尽管其政治上隶属于法国，但地理上显然属于该区域。
Perrette, 2023：ISI-MIP/isipedia-countries（v2.6）。GitHub仓库。链接：https://github.com/ISI-MIP/isipedia-countries/releases/tag/v2.6
Al Khourdajie等, 2022：附件二：定义、单位与惯例 [Al Khourdajie, A., R. van Diemen, W.F. Lamb, M. Pathak, A. Reisinger, S. de la Rue du Can, J. Skea, R. Slade, S. Some, L. Steg（编）]。收录于《IPCC, 2022：气候变化2022：减缓气候变化——政府间气候变化专门委员会第六次评估报告第三工作组贡献》 [P.R. Shukla, J. Skea, R. Slade, A. Al Khourdajie, R. van Diemen, D. McCollum, M. Pathak, S. Some, P. Vyas, R. Fradera, M. Belkacemi, A. Hasija, G. Lisboa, S. Luz, J. Malley（编）]。英国剑桥：剑桥大学出版社，美国纽约：纽约市。DOI: 10.1017/9781009157926.021

搜集汇总

背景与挑战

背景概述

该数据集包含基于IPCC AR6 WG3和ISIMIP的R10区域掩码，提供了国家/地区分类映射和0.5°网格的区域分数数据，适用于气候研究和区域分析。