{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:18:57.436201", "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": "2022-Mar-08_to_2022-Mar-17_44.0_-23.0"}, "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": 2022030001693}, "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": "March 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 17 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 10}, "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": 68188.94220926691}, "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": ["Madagascar"]}, "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": -23.0}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 41.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 45.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[41.47, -21.47], [42.0, -21.25], [42.53, -21.47], [42.68, -21.82], [42.75, -21.85], [43.0, -21.75], [43.25, -21.85], [43.5, -21.75], [44.0, -21.96], [44.5, -21.75], [45.03, -21.97], [45.18, -22.32], [45.53, -22.47], [45.75, -23.0], [45.53, -23.53], [45.13, -23.7], [45.25, -24.0], [45.03, -24.53], [44.5, -24.75], [44.25, -24.65], [44.0, -24.75], [43.75, -24.65], [43.68, -24.68], [43.53, -25.03], [43.0, -25.25], [42.47, -25.03], [42.32, -24.68], [41.97, -24.53], [41.75, -24.0], [41.85, -23.75], [41.82, -23.68], [41.47, -23.53], [41.32, -23.18], [40.97, -23.03], [40.75, -22.5], [40.97, -21.97], [41.32, -21.82], [41.47, -21.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-03-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.25, -23.5], [43.35, -23.25], [43.25, -23.0], [43.47, -22.47], [43.82, -22.32], [43.97, -21.97], [44.5, -21.75], [45.03, -21.97], [45.25, -22.5], [45.15, 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"mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.7510200213692346}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.173726309770984, 28.159241962935937, 28.60980273074034, 28.559254476505373, 28.770592126822066, 28.843463993599357, 28.74940164006614, 28.7847729351019, 28.826627054203357, 28.88355335889122]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.729124132490483, 30.678671824441608, 30.94235277478066, 31.22881835512493, 30.67881290574195, 30.56122164190691, 29.14137943526606, 29.646662112440595, 29.114503447550987, 28.88355335889122]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9161465548375436, 2.349452248132317, 2.102939374736257, 2.086617151285646, 1.7775777297698803, 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