{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:59.096245", "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-Dec-15_to_2024-Dec-17_49.0_24.0"}, "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": 2024120000410}, "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": "December 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2024"}, "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": 70145.99970688534}, "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": ["Saudi Arabia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 24.0}, "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": 49.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "49.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 47.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.25, 26.15], [48.32, 26.18], [48.47, 26.53], [49.0, 26.75], [49.53, 26.53], [49.68, 26.18], [50.03, 26.03], [50.18, 25.68], [50.53, 25.53], [50.68, 25.18], [51.03, 25.03], [51.25, 24.5], [51.15, 24.25], [51.25, 24.0], [51.03, 23.47], [50.5, 23.25], [50.25, 23.35], [50.0, 23.25], [49.75, 23.35], [49.5, 23.25], [49.25, 23.35], [49.0, 23.25], [48.75, 23.35], [48.5, 23.25], [48.25, 23.35], [48.0, 23.25], [47.47, 23.47], [47.32, 23.82], [46.97, 23.97], [46.75, 24.5], [46.96, 25.0], [46.75, 25.5], [46.85, 25.75], [46.75, 26.0], [46.97, 26.53]]]]}, "2024-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.25, 26.15], [48.32, 26.18], [48.47, 26.53], [49.0, 26.75], [49.53, 26.53], [49.68, 26.18], [50.03, 26.03], [50.18, 25.68], [50.53, 25.53], [50.68, 25.18], [51.03, 25.03], [51.25, 24.5], [51.15, 24.25], [51.25, 24.0], [51.03, 23.47], [50.5, 23.25], [50.25, 23.35], [50.0, 23.25], [49.75, 23.35], [49.5, 23.25], [49.25, 23.35], [49.0, 23.25], [48.75, 23.35], [48.5, 23.25], [48.25, 23.35], [48.0, 23.25], [47.47, 23.47], [47.32, 23.82], [46.97, 23.97], [46.75, 24.5], [46.96, 25.0], [46.75, 25.5], [46.85, 25.75], [46.75, 26.0], [46.97, 26.53]]]]}, "2024-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 26.53], [47.5, 26.75], [48.03, 26.53], [48.18, 26.18], [48.25, 26.15], [48.32, 26.18], [48.47, 26.53], [49.0, 26.75], [49.53, 26.53], [49.68, 26.18], [50.03, 26.03], [50.18, 25.68], [50.53, 25.53], [50.68, 25.18], [51.03, 25.03], [51.25, 24.5], [51.15, 24.25], [51.25, 24.0], [51.03, 23.47], [50.5, 23.25], [50.25, 23.35], [50.0, 23.25], [49.75, 23.35], [49.5, 23.25], [49.25, 23.35], [49.0, 23.25], [48.75, 23.35], [48.5, 23.25], [48.25, 23.35], [48.0, 23.25], [47.47, 23.47], [47.32, 23.82], [46.97, 23.97], [46.75, 24.5], [46.96, 25.0], [46.75, 25.5], [46.85, 25.75], [46.75, 26.0], [46.97, 26.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.763439260017492}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.104008865437877}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.141205139160206, 9.208388061523408, 11.410162760416654]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.644268290201865, 6.970630900065146, 10.446761067708337]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.6574359567502, -6.489146522982594, -4.1654441165808365]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.188500917675697, -7.763439260017492, -5.0797699690085665]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.633624722087485, -2.3111187212000255, -1.4902262278032452]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.020595365558039, -2.5489107929925585, -1.8758273707215511]}}