{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:14.117860", "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": "2013-Nov-28_to_2013-Dec-05_3.5_9.0"}, "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": 2013110002641}, "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": "November 28 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 05 2013"}, "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": "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": 51820.30314791929}, "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": ["Benin", "Nigeria"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Western-Africa"]}, "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": 9.0}, "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": 3.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "3.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 1.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 5.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.0, 9.25], [4.53, 9.03], [4.75, 8.5], [4.53, 7.97], [4.0, 7.75], [3.47, 7.97], [3.25, 8.5], [3.47, 9.03], [4.0, 9.25]]]]}, "2013-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.0, 9.25], [4.53, 9.03], [4.75, 8.5], [4.53, 7.97], [4.0, 7.75], [3.47, 7.97], [3.25, 8.5], [3.47, 9.03], [4.0, 9.25]]]]}, "2013-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[4.0, 9.25], [4.53, 9.03], [4.75, 8.5], [4.53, 7.97], [4.0, 7.75], [3.47, 7.97], [3.25, 8.5], [3.47, 9.03], [4.0, 9.25]]]]}, "2013-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[3.5, 9.75], [4.03, 9.53], [4.25, 9.0], [4.03, 8.47], [3.5, 8.25], [2.97, 8.47], [2.75, 9.0], [2.97, 9.53], [3.5, 9.75]]]]}, "2013-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.97, 10.53], [2.5, 10.75], [2.75, 10.65], [3.0, 10.75], [3.25, 10.65], [3.5, 10.75], [4.03, 10.53], [4.18, 10.18], [4.25, 10.15], [4.5, 10.25], [4.75, 10.15], [5.0, 10.25], [5.53, 10.03], [5.75, 9.5], [5.65, 9.25], [5.75, 9.0], [5.53, 8.47], [5.0, 8.25], [4.75, 8.35], [4.5, 8.25], [4.25, 8.35], [4.0, 8.25], [3.75, 8.35], [3.5, 8.25], [3.25, 8.35], [3.0, 8.25], [2.47, 8.47], [2.32, 8.82], [1.97, 8.97], [1.75, 9.5], [1.85, 9.75], [1.75, 10.0], [1.97, 10.53]]]]}, "2013-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.47, 11.53], [2.0, 11.75], [2.53, 11.53], [2.75, 11.0], [2.65, 10.75], [2.68, 10.68], [2.75, 10.65], [3.0, 10.75], [3.25, 10.65], [3.5, 10.75], [4.03, 10.53], [4.18, 10.18], [4.25, 10.15], [4.5, 10.25], [4.75, 10.15], [5.0, 10.25], [5.53, 10.03], [5.75, 9.5], [5.65, 9.25], [5.75, 9.0], [5.53, 8.47], [5.0, 8.25], [4.75, 8.35], [4.5, 8.25], [4.25, 8.35], [4.0, 8.25], [3.75, 8.35], [3.5, 8.25], [3.25, 8.35], [3.0, 8.25], [2.47, 8.47], [2.32, 8.82], [1.97, 8.97], [1.75, 9.5], [1.85, 9.75], [1.82, 9.82], [1.47, 9.97], [1.25, 10.5], [1.35, 10.75], [1.25, 11.0], [1.47, 11.53]]]]}, "2013-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[1.47, 11.53], [2.0, 11.75], [2.53, 11.53], [2.75, 11.0], 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"Mean t2m anomaly over entire duration", "value": 1.8479248634258236}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.176549819121135, 28.36447756318489, 27.98762599160841, 28.026841133964467, 28.954044854219603, 29.148046842292672, 28.736865430440616, 28.406335972282193]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.176549819121135, 28.36447756318489, 27.98762599160841, 28.026841133964467, 30.519841749437717, 30.411146612045457, 30.37297391498504, 28.590179563293987]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2995959336241185, 1.5016570344984075, 1.1270594032012013, 1.2757690715387184, 1.8236879250366655, 2.102129911240695, 1.760654778210796, 1.7759127367716019]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The 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