{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:06.775684", "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-Jan-03_to_2025-Jan-08_20.0_28.5"}, "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": 2025010001167}, "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": "January 03 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 08 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 62671.79813465669}, "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": ["Libya"]}, "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": 28.5}, "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": 20.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "20.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 18.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 21.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[20.68, 28.68], [21.03, 28.53], [21.18, 28.18], [21.53, 28.03], [21.75, 27.5], [21.65, 27.25], [21.75, 27.0], [21.53, 26.47], [21.0, 26.25], [20.5, 26.46], [20.0, 26.25], [19.75, 26.35], [19.68, 26.32], [19.53, 25.97], [19.0, 25.75], [18.75, 25.85], [18.5, 25.75], [17.97, 25.97], [17.75, 26.5], [17.97, 27.03], [18.38, 27.2], [18.25, 27.5], [18.35, 27.75], [18.25, 28.0], [18.35, 28.25], [18.25, 28.5], [18.35, 28.75], [18.25, 29.0], [18.47, 29.53], [18.82, 29.68], [18.85, 29.75], [18.82, 29.82], [18.47, 29.97], [18.25, 30.5], [18.47, 31.03], [19.0, 31.25], [19.25, 31.15], [19.5, 31.25], [20.03, 31.03], [20.25, 30.5], [20.15, 30.25], [20.25, 30.0], [20.15, 29.75], [20.25, 29.5], [20.15, 29.25], [20.18, 29.18], [20.53, 29.03], [20.68, 28.68]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, 28.0], [18.35, 28.25], [18.25, 28.5], [18.35, 28.75], [18.25, 29.0], [18.47, 29.53], [18.82, 29.68], [18.97, 30.03], [19.5, 30.25], [20.03, 30.03], [20.25, 29.5], [20.15, 29.25], [20.18, 29.18], [20.53, 29.03], [20.68, 28.68], [21.03, 28.53], [21.25, 28.0], [21.15, 27.75], [21.25, 27.5], [21.03, 26.97], [20.68, 26.82], [20.53, 26.47], [20.0, 26.25], [19.75, 26.35], [19.68, 26.32], [19.53, 25.97], [19.0, 25.75], [18.75, 25.85], [18.5, 25.75], [17.97, 25.97], [17.75, 26.5], [17.97, 27.03], [18.38, 27.2], [18.25, 27.5], [18.35, 27.75], [18.25, 28.0]]]]}, "2025-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[18.25, 28.0], [18.35, 28.25], [18.25, 28.5], [18.35, 28.75], [18.25, 29.0], [18.47, 29.53], [18.82, 29.68], [18.97, 30.03], [19.5, 30.25], [20.03, 30.03], [20.25, 29.5], [20.15, 29.25], [20.18, 29.18], [20.53, 29.03], [20.68, 28.68], [21.03, 28.53], [21.25, 28.0], [21.15, 27.75], [21.25, 27.5], [21.03, 26.97], [20.68, 26.82], [20.53, 26.47], [20.0, 26.25], [19.75, 26.35], [19.68, 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[20.35, 27.25], [20.25, 27.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.889005936893227}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.3244244527238322}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.536016789189091, 15.086387464735253, 15.459188261486247, 15.484497324625636, 16.099740346272768, 15.54278166029195]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.171225484212243, 16.779041544596396, 18.09418640136721, 17.67850774129232, 17.84313227335616, 16.02531204223635]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.855948375855039, 3.378561466710112, 3.3189946766055414, 2.559893471670313, 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