{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:39.160444", "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": "2026-Jun-20_to_2026-Jun-24_34.0_-4.0"}, "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": 2026060000650}, "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": "June 20 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 24 2026"}, "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": 107649.6545011262}, "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": ["Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -4.0}, "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": 30.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 34.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.0, -3.25], [34.53, -3.47], [34.75, -4.0], [34.53, -4.53], [34.0, -4.75], [33.47, -4.53], [33.25, -4.0], [33.47, -3.47], [34.0, -3.25]]]]}, "2026-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.25, -7.0], [30.47, -6.47], [30.82, -6.32], [30.97, -5.97], [31.32, -5.82], [31.46, -5.5], [31.25, -5.0], [31.47, -4.47], [31.82, -4.32], [31.85, -4.25], [31.75, -4.0], [31.97, -3.47], [32.5, -3.25], [32.75, -3.35], [33.0, -3.25], [33.5, -3.46], [34.0, -3.25], [34.25, -3.35], [34.5, -3.25], [35.03, -3.47], [35.25, -4.0], [35.03, -4.53], [34.68, -4.68], [34.53, -5.03], [34.18, -5.18], [34.15, -5.25], [34.25, -5.5], [34.03, -6.03], [33.5, -6.25], [33.25, -6.15], [33.0, -6.25], [33.53, -6.47], [33.75, -7.0], [33.53, -7.53], [33.18, -7.68], [33.03, -8.03], [32.5, -8.25], [32.2, -8.12], [32.03, -8.53], [31.5, -8.75], [30.97, -8.53], [30.75, -8.0], [30.85, -7.75], [30.82, -7.68], [30.47, -7.53], [30.25, -7.0]], [[32.75, -6.15], [32.68, -6.18], [32.65, -6.25], [32.68, -6.32], [32.75, -6.35], [33.0, -6.25], [32.75, -6.15]]]]}, "2026-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, -6.5], [29.97, -5.97], [30.38, -5.8], [30.25, -5.5], [30.47, -4.97], [30.82, -4.82], [30.97, -4.47], [31.32, -4.32], [31.35, -4.25], [31.25, -4.0], [31.47, -3.47], [32.0, -3.25], [32.25, -3.35], [32.5, -3.25], [32.75, -3.35], [33.0, -3.25], [33.5, -3.46], [34.0, -3.25], [34.25, -3.35], [34.5, -3.25], [35.03, -3.47], [35.25, -4.0], [35.03, -4.53], [34.68, -4.68], [34.53, -5.03], [34.18, -5.18], [34.15, -5.25], [34.25, -5.5], [34.03, -6.03], [33.5, -6.25], [33.25, -6.15], [33.18, -6.18], [33.13, -6.3], [33.53, -6.47], [33.75, -7.0], [33.53, -7.53], [33.18, -7.68], [33.03, -8.03], [32.5, -8.25], [32.2, -8.12], [32.03, -8.53], [31.5, -8.75], [30.97, -8.53], [30.75, -8.0], [30.85, -7.75], [30.82, -7.68], [30.47, -7.53], [30.32, -7.18], [29.97, -7.03], [29.75, -6.5]]]]}, "2026-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[29.75, -6.5], [29.97, -5.97], [30.38, -5.8], [30.25, -5.5], [30.47, -4.97], [30.82, -4.82], [30.97, -4.47], [31.32, -4.32], [31.35, -4.25], [31.25, -4.0], [31.47, -3.47], [32.0, -3.25], [32.25, -3.35], [32.5, -3.25], [32.75, -3.35], [33.0, -3.25], [33.5, -3.46], [34.0, -3.25], [34.25, -3.35], [34.5, -3.25], [35.03, -3.47], [35.25, -4.0], [35.03, -4.53], [34.68, -4.68], [34.53, -5.03], [34.18, -5.18], [34.15, -5.25], [34.25, -5.5], [34.03, -6.03], [33.5, -6.25], [33.25, -6.15], [33.18, -6.18], [33.13, -6.3], [33.53, -6.47], [33.75, -7.0], [33.53, -7.53], [33.18, -7.68], [33.03, -8.03], [32.5, -8.25], [32.2, -8.12], [32.03, -8.53], [31.5, -8.75], [30.97, -8.53], [30.75, -8.0], [30.85, -7.75], [30.82, -7.68], [30.47, -7.53], [30.32, -7.18], [29.97, -7.03], [29.75, -6.5]]]]}, "2026-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[30.47, -4.97], [30.82, -4.82], [30.97, -4.47], [31.32, -4.32], [31.35, -4.25], [31.25, -4.0], [31.47, -3.47], [32.0, -3.25], [32.53, -3.47], [32.68, -3.82], [32.75, -3.85], [33.0, -3.75], [33.3, 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21.45356677020044]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.88199386596682, 14.332710520426474, 14.086977895100915, 14.624068196614587, 20.10487518310549]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3902817233837936, -1.4128488478842092, -1.5133524413750397, -1.4737249524681375, -1.2362222534199185]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3902817233837936, -2.0874704274634155, -2.0228452815180162, -1.8916929327457979, -1.4402312461523366]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3190978203074788, -1.5407879184624949, -1.7626755793625097, -1.774680105162764, -1.5528439999328214]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3190978203074788, -2.0516244851995062, -2.4776556699934416, -2.378317559490247, -1.9454730920400307]}}