{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:16.619130", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-May-27_to_2022-May-31_34.0_-1.0"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022050000999}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "May 27 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 31 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 117406.23772926303}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Kenya", "Tanzania, United Republic of", "Uganda"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa", "Africa", "Africa"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": -1.0}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 0.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[31.25, -1.5], [31.35, -1.25], [31.25, -1.0], [31.35, -0.75], [31.25, -0.5], [31.47, 0.03], [31.82, 0.18], [31.97, 0.53], [32.5, 0.75], [32.75, 0.65], [33.0, 0.75], [33.25, 0.65], [33.5, 0.75], [33.75, 0.65], [34.0, 0.75], [34.25, 0.65], [34.5, 0.75], [35.03, 0.53], [35.25, 0.0], [35.15, -0.25], [35.25, -0.5], [35.15, -0.75], [35.25, -1.0], [35.04, -1.5], [35.25, -2.0], [35.15, -2.25], [35.25, -2.5], [35.03, -3.03], [34.5, -3.25], [34.25, -3.15], [34.0, -3.25], [33.5, -3.04], [33.39, -3.09], [33.18, -3.18], [33.03, -3.53], [32.5, -3.75], [32.25, -3.65], [32.0, -3.75], [31.75, -3.65], [31.5, -3.75], [31.25, -3.65], [31.0, -3.75], [30.47, -3.53], [30.25, -3.0], [30.47, -2.47], [30.82, -2.32], [30.97, -1.97], [31.32, -1.82], [31.35, -1.75], [31.25, -1.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.85, -1.25], [31.75, -1.0], [31.97, -0.47], [32.5, -0.25], [32.75, -0.35], [32.82, -0.32], [32.85, -0.25], [32.75, 0.0], [32.97, 0.53], [33.5, 0.75], [33.75, 0.65], [34.0, 0.75], [34.53, 0.53], [34.75, 0.0], [34.65, -0.25], [34.75, -0.5], [34.65, -0.75], [34.75, -1.0], [34.53, -1.53], [34.18, -1.68], [34.15, -1.75], [34.25, -2.0], [34.03, -2.53], [33.68, -2.68], [33.53, -3.03], [33.0, -3.25], [32.47, -3.03], [32.32, -2.68], [32.25, -2.65], [32.0, -2.75], [31.47, -2.53], [31.25, -2.0], [31.47, -1.47], [31.82, -1.32], [31.85, -1.25]]]]}, "2022-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.97, -1.97], [31.32, -1.82], [31.35, -1.75], [31.25, -1.5], [31.35, -1.25], [31.25, -1.0], [31.35, -0.75], [31.25, -0.5], [31.47, 0.03], [31.82, 0.18], [31.97, 0.53], [32.5, 0.75], [32.75, 0.65], [33.0, 0.75], [33.25, 0.65], [33.5, 0.75], [33.75, 0.65], [34.0, 0.75], [34.25, 0.65], [34.5, 0.75], [35.03, 0.53], [35.25, 0.0], [35.15, -0.25], [35.25, -0.5], [35.15, -0.75], [35.25, -1.0], 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t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4257417138706217, -1.5700844596488044, -1.9017744778121644, -1.8020413878970187, -1.05862111116096]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7365204814299204, -2.0339028631465226, -3.0387466872343794, -2.617724546569036, -1.05862111116096]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.747990282719472, -1.908664214943849, -2.357175431972341, -2.2572156886176242, -1.2779004206867004]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0936274911451767, -2.7551477007698666, -3.222936287655306, -3.275779570250886, -1.2779004206867004]}}