{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:54:41.926193", "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": "2025-Feb-23_to_2025-Feb-26_23.0_-28.0"}, "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": 2025020001755}, "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": "February 23 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 51623.63578076043}, "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": ["South Africa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-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": -28.0}, "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": 23.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 21.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 24.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.75, -28.0], [20.97, -27.47], [21.5, -27.25], [22.0, -27.46], [22.5, -27.25], [22.75, -27.35], [22.82, -27.32], [22.97, -26.97], [23.5, -26.75], [24.03, -26.97], [24.18, -27.32], [24.53, -27.47], [24.75, -28.0], [24.65, -28.25], [24.75, -28.5], [24.53, -29.03], [24.18, -29.18], [24.03, -29.53], [23.68, -29.68], [23.53, -30.03], [23.0, -30.25], [22.75, -30.15], [22.5, -30.25], [21.97, -30.03], [21.82, -29.68], [21.47, -29.53], [21.25, -29.0], [21.35, -28.75], [21.32, -28.68], [20.97, -28.53], [20.75, -28.0]]]]}, "2025-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.85, -27.75], [20.75, -27.5], [20.97, -26.97], [21.5, -26.75], [22.03, -26.97], [22.2, -27.37], [22.5, -27.25], [22.75, -27.35], [22.82, -27.32], [22.97, -26.97], [23.5, -26.75], [24.03, -26.97], [24.18, -27.32], [24.53, -27.47], [24.75, -28.0], [24.65, -28.25], [24.75, -28.5], [24.53, -29.03], [24.18, -29.18], [24.03, -29.53], [23.68, -29.68], [23.53, -30.03], [23.0, -30.25], [22.75, -30.15], [22.5, -30.25], [21.97, -30.03], [21.82, -29.68], [21.47, -29.53], [21.32, -29.18], [20.97, -29.03], [20.75, -28.5], [20.85, -28.25], [20.75, -28.0], [20.85, -27.75]]]]}, "2025-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.85, -27.75], [20.75, -27.5], [20.97, -26.97], [21.5, -26.75], [22.03, -26.97], [22.2, -27.37], [22.5, -27.25], [22.75, -27.35], [22.82, -27.32], [22.97, -26.97], [23.5, -26.75], [24.03, -26.97], [24.18, -27.32], [24.53, -27.47], [24.75, -28.0], [24.65, -28.25], [24.75, -28.5], [24.53, -29.03], [24.18, -29.18], [24.03, -29.53], [23.68, -29.68], [23.53, -30.03], [23.0, -30.25], [22.75, -30.15], [22.5, -30.25], [21.97, -30.03], [21.82, -29.68], [21.47, -29.53], [21.32, -29.18], [20.97, -29.03], [20.75, -28.5], [20.85, -28.25], [20.75, -28.0], [20.85, -27.75]]]]}, "2025-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.85, -27.75], [20.75, -27.5], [20.97, -26.97], [21.5, -26.75], [22.03, -26.97], [22.2, -27.37], [22.5, -27.25], [22.75, -27.35], [23.0, -27.25], [23.25, -27.35], [23.5, -27.25], [24.03, -27.47], [24.25, -28.0], [24.15, -28.25], [24.25, -28.5], [24.03, -29.03], [23.5, -29.25], [23.25, -29.15], [23.0, -29.25], [22.5, -29.04], [22.0, -29.25], [21.75, -29.15], [21.5, -29.25], [20.97, -29.03], [20.75, -28.5], [20.85, -28.25], [20.75, -28.0], [20.85, -27.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.19134528224339}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.193301254746164}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.407193606507576, 29.16357253225226, 28.033648828874618, 28.03133262351713]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [30.29582239786788, 31.392477925618493, 31.046386973063193, 30.82635396321615]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.302864391344419, 4.797452186647269, 3.752550244171995, 3.641393273925928]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.19134528224339, 6.127139016764943, 4.641140379393903, 4.134449492797216]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.9663532470260943, 2.120167335905775, 1.6060068863694663, 1.5398798128483386]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.8269520256807215, 2.943262217708752, 2.0585310131306787, 1.8935257822200051]}}