{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:14.706898", "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-May-06_to_2025-May-09_21.0_2.5"}, "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": 2025050001327}, "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 06 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 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": 86281.99121664136}, "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": ["Central African Republic", "Congo, The Democratic Republic of the"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 2.5}, "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": 21.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "21.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 19.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 23.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 2.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 6.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[20.47, 1.97], [20.3, 2.38], [20.0, 2.25], [19.47, 2.47], [19.25, 3.0], [19.47, 3.53], [19.82, 3.68], [19.97, 4.03], [20.38, 4.2], [20.25, 4.5], [20.35, 4.75], [20.32, 4.82], [20.25, 4.85], [20.0, 4.75], [19.47, 4.97], [19.32, 5.32], [18.97, 5.47], [18.75, 6.0], [18.97, 6.53], [19.5, 6.75], [19.75, 6.65], [20.0, 6.75], [20.5, 6.54], [21.0, 6.75], [21.53, 6.53], [21.75, 6.0], [21.65, 5.75], [21.68, 5.68], [21.75, 5.65], [22.0, 5.75], [22.25, 5.65], [22.5, 5.75], [22.75, 5.65], [23.0, 5.75], [23.25, 5.65], [23.5, 5.75], [24.03, 5.53], [24.25, 5.0], [24.03, 4.47], [23.68, 4.32], [23.65, 4.25], [23.75, 4.0], [23.53, 3.47], [23.0, 3.25], [22.75, 3.35], [22.68, 3.32], [22.53, 2.97], [22.18, 2.82], [22.15, 2.75], [22.25, 2.5], [22.03, 1.97], [21.5, 1.75], [21.25, 1.85], [21.0, 1.75], [20.47, 1.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[20.47, 3.03], [21.0, 3.25], [21.53, 3.03], [21.75, 2.5], [21.53, 1.97], [21.0, 1.75], [20.47, 1.97], [20.25, 2.5], [20.47, 3.03]]]]}, "2025-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 5.47], [18.75, 6.0], [18.97, 6.53], [19.5, 6.75], [19.75, 6.65], [20.0, 6.75], [20.5, 6.54], [21.0, 6.75], [21.53, 6.53], [21.75, 6.0], [21.65, 5.75], [21.68, 5.68], [21.75, 5.65], [22.0, 5.75], [22.25, 5.65], [22.5, 5.75], [22.75, 5.65], [23.0, 5.75], [23.25, 5.65], [23.5, 5.75], [24.03, 5.53], [24.25, 5.0], [24.03, 4.47], [23.68, 4.32], [23.65, 4.25], [23.75, 4.0], [23.53, 3.47], [23.0, 3.25], [22.75, 3.35], [22.68, 3.32], [22.53, 2.97], [22.18, 2.82], [22.15, 2.75], [22.25, 2.5], [22.03, 1.97], [21.5, 1.75], [21.25, 1.85], [21.0, 1.75], [20.47, 1.97], [20.3, 2.38], [20.0, 2.25], [19.47, 2.47], [19.25, 3.0], [19.47, 3.53], [19.82, 3.68], [19.97, 4.03], [20.38, 4.2], [20.25, 4.5], [20.35, 4.75], [20.32, 4.82], [20.25, 4.85], [20.0, 4.75], [19.47, 4.97], [19.32, 5.32], [18.97, 5.47]]]]}, "2025-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.97, 5.47], [18.75, 6.0], [18.97, 6.53], [19.5, 6.75], [19.75, 6.65], [20.0, 6.75], [20.5, 6.54], [21.0, 6.75], [21.53, 6.53], [21.75, 6.0], [21.65, 5.75], [21.68, 5.68], [21.75, 5.65], [22.0, 5.75], [22.25, 5.65], [22.5, 5.75], [22.75, 5.65], [23.0, 5.75], [23.25, 5.65], [23.5, 5.75], [24.03, 5.53], [24.25, 5.0], [24.03, 4.47], [23.68, 4.32], [23.65, 4.25], [23.75, 4.0], [23.53, 3.47], [23.0, 3.25], [22.75, 3.35], [22.68, 3.32], [22.53, 2.97], [22.18, 2.82], [22.15, 2.75], [22.25, 2.5], [22.03, 1.97], [21.5, 1.75], [21.25, 1.85], [21.0, 1.75], [20.47, 1.97], [20.3, 2.38], [20.0, 2.25], [19.47, 2.47], [19.25, 3.0], [19.47, 3.53], [19.82, 3.68], [19.97, 4.03], [20.38, 4.2], [20.25, 4.5], [20.35, 4.75], [20.32, 4.82], [20.25, 4.85], [20.0, 4.75], [19.47, 4.97], [19.32, 5.32], [18.97, 5.47]]]]}, "2025-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9954124101931243}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.44944279988607, 27.60170462472098, 27.866024998256137, 28.22294460478281]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.44944279988607, 28.894057210286462, 28.88154246012374, 29.225603993733728]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6996649388554488, 1.6775568139055639, 1.9454003676600726, 2.3738424587043676]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6996649388554488, 2.0939936433845787, 2.4772837195931174, 2.7672379809442305]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5431953068202808, 1.4078480240972688, 1.6980221429198767, 2.0931027912599753]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5431953068202808, 1.81765352858809, 2.2712280095175497, 2.561944832109561]}}