{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:59:39.259592", "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": "2024-Jul-05_to_2024-Jul-12_18.0_-7.5"}, "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": 2024070000200}, "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": "July 05 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 12 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 61169.27394577076}, "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": ["Angola", "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": -7.5}, "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": 18.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "18.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 17.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 20.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[16.75, -8.0], [16.85, -7.75], [16.82, -7.68], [16.47, -7.53], [16.25, -7.0], [16.47, -6.47], [17.0, -6.25], [17.25, -6.35], [17.5, -6.25], [18.03, -6.47], [18.18, -6.82], [18.53, -6.97], [18.68, -7.32], [18.75, -7.35], [19.0, -7.25], [19.25, -7.35], [19.5, -7.25], [19.75, -7.35], [20.0, -7.25], [20.53, -7.47], [20.75, -8.0], [20.53, -8.53], [20.0, -8.75], [19.75, -8.65], [19.68, -8.68], [19.65, -8.75], [19.75, -9.0], [19.53, -9.53], [19.18, -9.68], [19.03, -10.03], [18.5, -10.25], [18.0, -10.04], [17.5, -10.25], [16.97, -10.03], [16.75, -9.5], [16.85, -9.25], [16.75, -9.0], [16.85, -8.75], [16.75, -8.5], [16.85, -8.25], [16.75, -8.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-Africa", "W.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.47, -6.97], [18.0, -6.75], [18.53, -6.97], [18.75, -7.5], [18.53, -8.03], [18.0, -8.25], [17.47, -8.03], [17.25, -7.5], [17.47, -6.97]]]]}, "2024-07-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.47, -6.97], [18.0, -6.75], [18.53, -6.97], [18.75, -7.5], [18.53, -8.03], [18.0, -8.25], [17.47, -8.03], [17.25, -7.5], [17.47, -6.97]]]]}, "2024-07-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -9.0], [16.85, -8.75], [16.75, -8.5], [16.85, -8.25], [16.75, -8.0], [16.85, -7.75], [16.75, -7.5], [16.97, -6.97], [17.5, -6.75], [17.75, -6.85], [18.0, -6.75], [18.53, -6.97], [18.68, -7.32], [18.75, -7.35], [19.0, -7.25], [19.25, -7.35], [19.5, -7.25], [19.75, -7.35], [20.0, -7.25], [20.53, -7.47], [20.75, -8.0], [20.53, -8.53], [20.0, -8.75], [19.75, -8.65], [19.68, -8.68], [19.65, -8.75], [19.75, -9.0], [19.53, -9.53], [19.18, -9.68], [19.03, -10.03], [18.5, -10.25], [18.0, -10.04], [17.5, -10.25], [16.97, -10.03], [16.75, -9.5], [16.85, -9.25], [16.75, -9.0]]]]}, "2024-07-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[16.75, -9.0], [16.85, 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t2m", "description": "The daily evolution of mean t2m.", "value": [23.446348009838175, 23.455126207458477, 22.452647172348748, 21.990022857457006, 22.683912778746503, 22.629287340650762, 22.67729809649927, 23.712540202525417]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.446348009838175, 23.455126207458477, 21.331520599503733, 20.691749596573572, 21.19633635615031, 21.731327600212182, 21.603325518548274, 22.9881260940561]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4361418395060355, -1.439019032229055, -1.7030194569170287, -2.173099786096186, -1.4945898880682194, -1.6333384121134031, -1.6028337309653438, -1.257478040793463]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4361418395060355, -1.439019032229055, 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