{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:07:17.036652", "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-Aug-13_to_2025-Aug-15_45.0_5.0"}, "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": 2025080001887}, "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": "August 13 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 15 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 95351.63696892737}, "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": ["Ethiopia", "Somalia"]}, "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": 5.0}, "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": 45.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 43.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 4.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[42.75, 5.5], [42.97, 6.03], [43.32, 6.18], [43.47, 6.53], [44.0, 6.75], [44.25, 6.65], [44.5, 6.75], [45.03, 6.53], [45.18, 6.18], [45.25, 6.15], [45.32, 6.18], [45.47, 6.53], [45.82, 6.68], [45.97, 7.03], [46.5, 7.25], [46.75, 7.15], [46.82, 7.18], [46.97, 7.53], [47.32, 7.68], [47.47, 8.03], [47.82, 8.18], [47.97, 8.53], [48.5, 8.75], [49.03, 8.53], [49.25, 8.0], [49.03, 7.47], [48.68, 7.32], [48.65, 7.25], [48.75, 7.0], [48.53, 6.47], [48.18, 6.32], [48.03, 5.97], [47.68, 5.82], [47.53, 5.47], [47.18, 5.32], [47.15, 5.25], [47.25, 5.0], [47.03, 4.47], [46.68, 4.32], [46.53, 3.97], [46.0, 3.75], [45.75, 3.85], [45.5, 3.75], [45.25, 3.85], [45.0, 3.75], [44.75, 3.85], [44.5, 3.75], [44.25, 3.85], [44.0, 3.75], [43.75, 3.85], [43.5, 3.75], [42.97, 3.97], [42.75, 4.5], [42.85, 4.75], [42.75, 5.0], [42.85, 5.25], [42.75, 5.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Eastern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.75, 5.0], [42.85, 5.25], [42.75, 5.5], [42.97, 6.03], [43.32, 6.18], [43.47, 6.53], [44.0, 6.75], [44.25, 6.65], [44.5, 6.75], [45.03, 6.53], [45.18, 6.18], [45.25, 6.15], [45.32, 6.18], [45.47, 6.53], [45.82, 6.68], [45.97, 7.03], [46.5, 7.25], [46.75, 7.15], [46.82, 7.18], [46.97, 7.53], [47.32, 7.68], [47.47, 8.03], [47.82, 8.18], [47.97, 8.53], [48.5, 8.75], [49.03, 8.53], [49.25, 8.0], [49.03, 7.47], [48.68, 7.32], [48.65, 7.25], [48.75, 7.0], [48.53, 6.47], [48.18, 6.32], [48.03, 5.97], [47.68, 5.82], [47.53, 5.47], [47.18, 5.32], [47.15, 5.25], [47.25, 5.0], [47.03, 4.47], [46.68, 4.32], [46.53, 3.97], [46.0, 3.75], [45.75, 3.85], [45.5, 3.75], [45.25, 3.85], [45.0, 3.75], [44.75, 3.85], [44.5, 3.75], [44.25, 3.85], [44.0, 3.75], [43.75, 3.85], [43.5, 3.75], [42.97, 3.97], [42.75, 4.5], [42.85, 4.75], [42.75, 5.0]]]]}, "2025-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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over entire duration", "value": 1.0071956870847725}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.31012845603368, 28.579062357256475, 28.397622598627606]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.6311024983724, 30.056968943278036, 29.846274312337243]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9100527452298589, 1.1602077421603851, 0.9513265738640737]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.1714465696183538, 1.4517981120567356, 1.164464405883848]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3739248566182154, 1.723675819246522, 1.42625575882248]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7747286503971322, 1.9990263338331733, 1.7771636919449991]}}