{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:25.349554", "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": "2012-May-28_to_2012-May-30_347.5_18.5"}, "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": 2012050001445}, "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": "May 28 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 30 2012"}, "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": "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": 614567.6552611304}, "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": ["Mali", "Mauritania", "Morocco"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Sahara"]}, "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": 18.5}, "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": 347.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "347.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 344.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 358.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 21.25], [-16.25, 21.5], [-16.15, 21.75], [-16.25, 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[-16.15, 20.75], [-16.25, 21.0], [-16.15, 21.25]]]]}, "2012-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.15, 21.25], [-16.25, 21.5], [-16.15, 21.75], [-16.25, 22.0], [-16.15, 22.25], [-16.25, 22.5], [-16.03, 23.03], [-15.68, 23.18], [-15.65, 23.25], [-15.75, 23.5], [-15.53, 24.03], [-15.0, 24.25], [-14.75, 24.15], [-14.5, 24.25], [-13.97, 24.03], [-13.75, 23.5], [-13.85, 23.25], [-13.75, 23.0], [-13.85, 22.75], [-13.8, 22.62], [-13.68, 22.68], [-13.53, 23.03], [-13.18, 23.18], [-13.03, 23.53], [-12.5, 23.75], [-11.97, 23.53], [-11.82, 23.18], [-11.75, 23.15], [-11.5, 23.25], [-11.25, 23.15], [-11.0, 23.25], [-10.75, 23.15], [-10.5, 23.25], [-10.25, 23.15], [-10.0, 23.25], [-9.75, 23.15], [-9.5, 23.25], [-9.25, 23.15], [-9.0, 23.25], [-8.75, 23.15], [-8.5, 23.25], [-8.25, 23.15], [-8.0, 23.25], [-7.75, 23.15], [-7.5, 23.25], [-6.97, 23.03], [-6.82, 22.68], [-6.47, 22.53], [-6.32, 22.18], [-6.25, 22.15], [-6.0, 22.25], [-5.47, 22.03], [-5.32, 21.68], [-5.25, 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"value": [19.80228351086413, 20.06846564474256, 20.897292874522407]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.9097150357234014, -4.486739365747681, -3.569362193256201]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.307479143406397, -5.725053754450585, -4.9581747096067375]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7294793287734394, -2.0929101532843353, -1.6885406764813684]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.472191408062652, -2.660593537859977, -2.290115368890535]}}