{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:07.293847", "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": "2015-Nov-01_to_2015-Nov-03_348.5_25.0"}, "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": 2015110000079}, "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 01 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 03 2015"}, "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": 97595.22395046032}, "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": ["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": 25.0}, "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": 348.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "348.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 346.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-11-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.75, 24.5], [-13.53, 25.03], [-13.12, 25.2], [-13.25, 25.5], [-13.03, 26.03], [-12.5, 26.25], [-12.25, 26.15], [-12.18, 26.18], [-12.15, 26.25], [-12.25, 26.5], [-12.03, 27.03], [-11.68, 27.18], [-11.53, 27.53], [-11.0, 27.75], [-10.75, 27.65], [-10.5, 27.75], [-10.25, 27.65], [-10.18, 27.68], [-10.03, 28.03], [-9.5, 28.25], [-9.25, 28.15], [-9.0, 28.25], [-8.47, 28.03], [-8.25, 27.5], [-8.47, 26.97], [-8.82, 26.82], [-8.85, 26.75], [-8.75, 26.5], [-8.97, 25.97], [-9.32, 25.82], [-9.35, 25.75], [-9.25, 25.5], [-9.47, 24.97], [-9.82, 24.82], [-9.97, 24.47], [-10.32, 24.32], [-10.47, 23.97], [-11.0, 23.75], [-11.25, 23.85], [-11.32, 23.82], [-11.47, 23.47], [-12.0, 23.25], [-12.25, 23.35], [-12.32, 23.32], [-12.47, 22.97], [-13.0, 22.75], [-13.25, 22.85], [-13.5, 22.75], [-14.03, 22.97], [-14.25, 23.5], [-14.03, 24.03], [-13.68, 24.18], [-13.65, 24.25], [-13.75, 24.5]]]]}, "2015-11-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.75, 24.5], [-13.53, 25.03], [-13.12, 25.2], [-13.25, 25.5], [-13.03, 26.03], [-12.5, 26.25], [-12.25, 26.15], [-12.18, 26.18], [-12.15, 26.25], [-12.25, 26.5], [-12.03, 27.03], [-11.68, 27.18], [-11.53, 27.53], [-11.0, 27.75], [-10.75, 27.65], [-10.5, 27.75], [-10.25, 27.65], [-10.18, 27.68], [-10.03, 28.03], [-9.5, 28.25], [-9.25, 28.15], [-9.0, 28.25], [-8.47, 28.03], [-8.25, 27.5], [-8.47, 26.97], [-8.82, 26.82], [-8.85, 26.75], [-8.75, 26.5], [-8.97, 25.97], [-9.32, 25.82], [-9.35, 25.75], [-9.25, 25.5], [-9.47, 24.97], [-9.82, 24.82], [-9.97, 24.47], [-10.32, 24.32], [-10.47, 23.97], [-11.0, 23.75], [-11.25, 23.85], [-11.32, 23.82], [-11.47, 23.47], [-12.0, 23.25], [-12.25, 23.35], [-12.32, 23.32], [-12.47, 22.97], [-13.0, 22.75], [-13.25, 22.85], [-13.5, 22.75], [-14.03, 22.97], [-14.25, 23.5], [-14.03, 24.03], [-13.68, 24.18], [-13.65, 24.25], [-13.75, 24.5]]]]}, "2015-11-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.75, 24.5], [-13.53, 25.03], [-13.12, 25.2], [-13.25, 25.5], [-13.03, 26.03], [-12.5, 26.25], [-12.25, 26.15], [-12.18, 26.18], [-12.15, 26.25], [-12.25, 26.5], [-12.03, 27.03], [-11.68, 27.18], [-11.53, 27.53], [-11.0, 27.75], [-10.75, 27.65], [-10.5, 27.75], [-10.25, 27.65], [-10.18, 27.68], [-10.03, 28.03], [-9.5, 28.25], [-9.25, 28.15], [-9.0, 28.25], [-8.47, 28.03], [-8.25, 27.5], [-8.47, 26.97], [-8.82, 26.82], [-8.85, 26.75], [-8.75, 26.5], [-8.97, 25.97], [-9.32, 25.82], [-9.35, 25.75], [-9.25, 25.5], [-9.47, 24.97], [-9.82, 24.82], [-9.97, 24.47], [-10.32, 24.32], [-10.47, 23.97], [-11.0, 23.75], [-11.25, 23.85], [-11.32, 23.82], [-11.47, 23.47], [-12.0, 23.25], [-12.25, 23.35], [-12.32, 23.32], [-12.47, 22.97], [-13.0, 22.75], [-13.25, 22.85], [-13.5, 22.75], [-14.03, 22.97], [-14.25, 23.5], [-14.03, 24.03], [-13.68, 24.18], [-13.65, 24.25], [-13.75, 24.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.598003379904867}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.963043082194676}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.55556592514006, 16.982083029734554, 18.280529588491902]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.9216581036236, 15.041741643692717, 16.475806330594025]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.462703368089331, -5.931075395929495, -4.495350482565206]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.8322257605779555, -6.598003379904867, -4.966149571852839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4726079866190327, -1.945440656473166, -1.478675854991254]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5766115342557927, -2.053635280241969, -1.623899302742687]}}