The following regions, used in the scientific literature, are available in regionmask:
Giorgi Regions (from Giorgi and Franciso, 2000)
SREX Regions (Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate Change Adaptation (SREX) from Seneviratne et al., 2012)
AR6 Regions (Iturbide et al., 2020; ESSD)
PRUDENCE Regions (from European Regional Climate Modelling PRUDENCE Project, Christensen and Christensen, 2007)
The following imports are necessary for the examples.
In : import regionmask In : import cartopy.crs as ccrs
The Giorgi reference regions, rectangular regions proposed in Giorgi and Francisco, 2000 were used in the third and fourth assessment reports of the Intergovernmental Panel on Climate Change (IPCC).
In : regionmask.defined_regions.giorgi Out: <regionmask.Regions 'Giorgi'> Source: Giorgi and Franciso, 2000 (http://link.springer.com/article/10.1007... overlap: False Regions: 1 AUS Australia 2 AMZ Amazon Basin 3 SSA Southern South America 4 CAM Central America 5 WNA Western North America .. .. ... 17 EAS East Asia 18 SAS South Asia 19 CAS Central Asia 20 TIB Tibet 21 NAS North Asia [21 regions]
In : regionmask.defined_regions.giorgi.plot(label='abbrev');
The Giorgi regions were modified using more flexible polygons in the IPCC Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate Adaptation (SREX; Seneviratne et al., 2012). A slightly modified and extended version of the SREX regions (not included in regionmask) was used for the fifth IPCC assessment report.
In : regionmask.defined_regions.srex Out: <regionmask.Regions 'SREX'> Source: Seneviratne et al., 2012 (https://www.ipcc.ch/site/assets/uploads/2... overlap: False Regions: 1 ALA Alaska/N.W. Canada 2 CGI Canada/Greenl./Icel. 3 WNA W. North America 4 CNA C. North America 5 ENA E. North America .. .. ... 22 EAS E. Asia 23 SAS S. Asia 24 SEA S.E. Asia 25 NAU N. Australia 26 SAU S. Australia/New Zealand [26 regions]
In : regionmask.defined_regions.srex.plot();
The sixth IPCC assessment report (AR6) again updated the SREX regions in Iturbide et al.,
(2020), which defines 58 regions. The regions cover the land and ocean (
In addition the regions are also divided into land (
ar6.land) and ocean
ar6.ocean) categories. The numbering is kept consistent between the categories.
Note that some regions are in the land and in the ocean categories (e.g. the Mediterranean).
In : regionmask.defined_regions.ar6.all Out: <regionmask.Regions 'AR6 reference regions'> Source: Iturbide et al., 2020 (ESSD) overlap: False Regions: 0 GIC Greenland/Iceland 1 NWN N.W.North-America 2 NEN N.E.North-America 3 WNA W.North-America 4 CNA C.North-America .. .. ... 53 ARS Arabian-Sea 54 BOB Bay-of-Bengal 55 EIO Equatorial.Indic-Ocean 56 SIO S.Indic-Ocean 57 SOO Southern-Ocean [58 regions]
In : text_kws = dict(color="#67000d", fontsize=7, bbox=dict(pad=0.2, color="w")) In : regionmask.defined_regions.ar6.all.plot( ...: text_kws=text_kws, label_multipolygon="all" ...: ); ...:
In : regionmask.defined_regions.ar6.land Out: <regionmask.Regions 'AR6 reference regions (land only)'> Source: Iturbide et al., 2020 (ESSD) overlap: False Regions: 0 GIC Greenland/Iceland 1 NWN N.W.North-America 2 NEN N.E.North-America 3 WNA W.North-America 4 CNA C.North-America .. .. ... 41 EAU E.Australia 42 SAU S.Australia 43 NZ New-Zealand 44 EAN E.Antarctica 45 WAN W.Antarctica [46 regions]
In : regionmask.defined_regions.ar6.land.plot(text_kws=text_kws, add_ocean=True);
In : regionmask.defined_regions.ar6.ocean Out: <regionmask.Regions 'AR6 reference regions (ocean only)'> Source: Iturbide et al., 2020 (ESSD) overlap: False Regions: 8 CAR Caribbean 19 MED Mediterranean 38 SEA S.E.Asia 46 ARO Arctic-Ocean 47 NPO N.Pacific-Ocean .. .. ... 53 ARS Arabian-Sea 54 BOB Bay-of-Bengal 55 EIO Equatorial.Indic-Ocean 56 SIO S.Indic-Ocean 57 SOO Southern-Ocean [15 regions]
In : regionmask.defined_regions.ar6.ocean.plot( ....: text_kws=text_kws, add_land=True, label_multipolygon="all" ....: ) ....: Out: <GeoAxes: >
The PRUDENCE regions were defined in the PRUDENCE project as European sub-areas for regional climate model output and are often used in European climate studies. They contain 8 regions, Alps (AL), British Isles (BI), Eastern Europe (EA), France (FR), Iberian Peninsula (IP), Mediterranean (MD), Mid-Europe (ME), and Scandinavia (SC).
The region FR and ME overlap, hence it is not possible to create 2D masks use
In : regionmask.defined_regions.prudence Out: <regionmask.Regions 'PRUDENCE'> Source: Christensen and Christensen, 2007, Climatic Change 81:7-30 (https:/... overlap: True Regions: 1 BI British Isles 2 IP Iberian Peninsula 3 FR France 4 ME Mid-Europe 5 SC Scandinavia 6 AL Alps 7 MD Mediterranean 8 EA Eastern Europe [8 regions]
# choose a good projection for regional maps In : proj = ccrs.LambertConformal(central_longitude=10) In : regionmask.defined_regions.prudence.plot(projection=proj, resolution="50m");