{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:49.203227", "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-Aug-04_to_2024-Aug-07_347.5_19.0"}, "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": 2024080000161}, "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": "August 04 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 07 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 96965.45603186917}, "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"]}, "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": 19.0}, "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": 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": 349.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 19.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-15.53, 18.03], [-15.18, 18.18], [-15.03, 18.53], [-14.5, 18.75], [-14.25, 18.65], [-14.18, 18.68], [-14.03, 19.03], [-13.68, 19.18], [-13.53, 19.53], [-13.0, 19.75], [-12.75, 19.65], [-12.5, 19.75], [-12.25, 19.65], [-12.18, 19.68], [-12.03, 20.03], [-11.5, 20.25], [-10.97, 20.03], [-10.82, 19.68], [-10.47, 19.53], [-10.25, 19.0], [-10.35, 18.75], [-10.25, 18.5], [-10.35, 18.25], [-10.25, 18.0], [-10.35, 17.75], [-10.25, 17.5], [-10.47, 16.97], [-11.0, 16.75], [-11.25, 16.85], [-11.5, 16.75], [-11.75, 16.85], [-12.0, 16.75], [-12.25, 16.85], [-12.5, 16.75], [-12.75, 16.85], [-13.0, 16.75], [-13.25, 16.85], [-13.5, 16.75], [-13.75, 16.85], [-13.82, 16.82], [-13.97, 16.47], [-14.5, 16.25], [-14.75, 16.35], [-15.0, 16.25], [-15.53, 16.47], [-15.75, 17.0], [-15.65, 17.25], [-15.75, 17.5], [-15.53, 18.03]]]]}, "2024-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.25, 17.5], [-16.03, 18.03], [-15.68, 18.18], [-15.53, 18.53], [-15.0, 18.75], [-14.75, 18.65], [-14.5, 18.75], [-14.25, 18.65], [-14.18, 18.68], [-14.03, 19.03], [-13.68, 19.18], [-13.53, 19.53], [-13.0, 19.75], [-12.75, 19.65], [-12.5, 19.75], [-12.25, 19.65], [-12.18, 19.68], [-12.03, 20.03], [-11.5, 20.25], [-10.97, 20.03], [-10.82, 19.68], [-10.47, 19.53], [-10.25, 19.0], [-10.35, 18.75], [-10.25, 18.5], [-10.35, 18.25], [-10.25, 18.0], [-10.35, 17.75], [-10.25, 17.5], [-10.47, 16.97], [-11.0, 16.75], [-11.25, 16.85], [-11.5, 16.75], [-11.75, 16.85], [-12.0, 16.75], [-12.25, 16.85], [-12.5, 16.75], [-12.75, 16.85], [-13.0, 16.75], [-13.25, 16.85], [-13.5, 16.75], [-13.75, 16.85], [-13.82, 16.82], [-13.97, 16.47], [-14.5, 16.25], [-14.75, 16.35], [-15.0, 16.25], [-15.53, 16.47], [-15.68, 16.82], [-16.03, 16.97], [-16.25, 17.5]]]]}, "2024-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.25, 17.5], [-16.03, 18.03], [-15.68, 18.18], [-15.53, 18.53], [-15.0, 18.75], [-14.75, 18.65], [-14.5, 18.75], [-14.25, 18.65], [-14.18, 18.68], [-14.03, 19.03], [-13.68, 19.18], [-13.53, 19.53], [-13.0, 19.75], [-12.75, 19.65], [-12.5, 19.75], [-12.25, 19.65], [-12.18, 19.68], [-12.03, 20.03], [-11.5, 20.25], [-10.97, 20.03], [-10.82, 19.68], [-10.47, 19.53], [-10.25, 19.0], [-10.35, 18.75], [-10.25, 18.5], [-10.35, 18.25], [-10.25, 18.0], [-10.35, 17.75], [-10.25, 17.5], [-10.47, 16.97], [-11.0, 16.75], [-11.25, 16.85], [-11.5, 16.75], [-11.75, 16.85], [-12.0, 16.75], [-12.25, 16.85], [-12.5, 16.75], [-12.75, 16.85], [-13.0, 16.75], [-13.25, 16.85], [-13.5, 16.75], [-13.75, 16.85], [-13.82, 16.82], [-13.97, 16.47], [-14.5, 16.25], [-14.75, 16.35], [-15.0, 16.25], [-15.53, 16.47], [-15.68, 16.82], [-16.03, 16.97], [-16.25, 17.5]]]]}, "2024-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-16.25, 17.5], [-16.03, 18.03], [-15.68, 18.18], [-15.53, 18.53], [-15.0, 18.75], [-14.75, 18.65], [-14.5, 18.75], [-14.25, 18.65], [-14.18, 18.68], [-14.03, 19.03], [-13.68, 19.18], [-13.53, 19.53], [-13.0, 19.75], [-12.75, 19.65], [-12.5, 19.75], [-12.25, 19.65], [-12.18, 19.68], [-12.03, 20.03], [-11.5, 20.25], [-10.97, 20.03], [-10.75, 19.5], [-10.85, 19.25], [-10.75, 19.0], [-10.85, 18.75], [-10.75, 18.5], [-10.85, 18.25], [-10.75, 18.0], [-10.97, 17.47], [-11.5, 17.25], [-11.75, 17.35], [-11.82, 17.32], [-11.97, 16.97], [-12.5, 16.75], [-12.75, 16.85], [-13.0, 16.75], [-13.25, 16.85], [-13.5, 16.75], [-13.75, 16.85], [-13.82, 16.82], [-13.97, 16.47], [-14.5, 16.25], [-14.75, 16.35], [-15.0, 16.25], [-15.53, 16.47], [-15.68, 16.82], [-16.03, 16.97], [-16.25, 17.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.303035583440817}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5678439480982265}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [28.091807692977284, 28.85607823922561, 28.547500291853964, 28.820263038679002]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.132240084428815, 27.36849231696982, 27.30281176343732, 27.67941684664021]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.193601530159178, -3.248225231941021, -3.549036833500972, -3.2630131099873996]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.295654131483445, -4.592471646522995, -5.303035583440817, -4.650771385262601]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.5127376241972317, -1.9896040431724409, -2.18799745062664, -2.020770130792861]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.025831886400043, -2.7518866442595944, -3.1259461286917616, -2.687140683027314]}}