R10 region mask based on IPCC AR6 WG3 and ISIMIP

<p>region_classification.tsv: Tab-separated value file of ISO3 code, country name and the R10 mapping used.</p> <p>r10masks_fractional.nc: 0.5&deg; grid of fractions of grid cell that is part of one of 10 world regions as defined by IPCC Working Group 3.</p> <p>The &quot;region&quot; 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.</p> <p>Values of first axis correspond to following regions defined in the country mappings file:</p> <ul> <li>0=South-East Asia and developing Pacific</li> <li>1=Eurasia</li> <li>2=Asia-Pacific</li> <li>3=Africa</li> <li>4=Middle East</li> <li>5=Latin America and Caribbean</li> <li>6=North America</li> <li>7=Eastern Asia</li> <li>8=Southern Asia</li> <li>9=Europe</li> <li>10=World (all land, excluding Antarctica, and the sum of fractions in 0-9).</li> </ul> <p>Oceans and inland lakes are not counted within countries/regions.</p> <p>The starting point for this data is the 0.5&deg; country mask from Perrette (2023).</p> <p>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 &amp; Caribbean, which it is most definitely geographically part of, rather than Europe, which it is politically part of).</p> <p>&nbsp;</p> <p>Perette, 2023: ISI-MIP/isipedia-countries (v2.6). GitHub repository. <a href="https://github.com/ISI-MIP/isipedia-countries/releases/tag/v2.6">https://github.com/ISI-MIP/isipedia-countries</a><a href="https://github.com/ISI-MIP/isipedia-countries/releases/tag/v2.6">/releases/tag/v2.6</a></p> <p>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</p>