{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:26.039773", "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-Dec-24_to_2015-Dec-29_42.0_20.0"}, "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": 2015120000629}, "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 24 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 581480.5724817724}, "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", "Yemen"]}, "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": ["Red Sea"]}, "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": 20.0}, "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": 42.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "42.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 39.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 49.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.5, 22.25], [41.03, 22.03], [41.25, 21.5], [41.03, 20.97], [40.68, 20.82], [40.53, 20.47], [40.0, 20.25], [39.47, 20.47], [39.25, 21.0], [39.47, 21.53], [39.82, 21.68], [39.97, 22.03], [40.5, 22.25]]]]}, "2015-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.5, 22.25], [41.0, 22.04], [41.32, 22.18], [41.35, 22.25], [41.32, 22.32], [40.97, 22.47], [40.75, 23.0], [40.96, 23.5], [40.75, 24.0], [40.85, 24.25], [40.75, 24.5], [40.97, 25.03], [41.5, 25.25], [41.75, 25.15], [42.0, 25.25], [42.25, 25.15], [42.5, 25.25], [42.75, 25.15], [42.82, 25.18], [42.97, 25.53], [43.5, 25.75], [44.03, 25.53], [44.2, 25.13], [44.5, 25.25], [44.75, 25.15], [45.0, 25.25], [45.25, 25.15], [45.32, 25.18], [45.47, 25.53], [46.0, 25.75], [46.25, 25.65], [46.5, 25.75], [46.75, 25.65], [47.0, 25.75], [47.25, 25.65], [47.5, 25.75], [48.03, 25.53], [48.25, 25.0], [48.15, 24.75], [48.25, 24.5], [48.03, 23.97], [47.68, 23.82], [47.53, 23.47], [47.18, 23.32], [47.03, 22.97], [46.68, 22.82], [46.53, 22.47], [46.18, 22.32], [46.15, 22.25], [46.25, 22.0], [46.03, 21.47], [45.68, 21.32], [45.53, 20.97], [45.0, 20.75], [44.75, 20.85], [44.5, 20.75], [44.25, 20.85], [44.0, 20.75], [43.75, 20.85], [43.5, 20.75], [43.25, 20.85], [43.0, 20.75], [42.75, 20.85], [42.63, 20.8], [42.68, 20.68], [43.03, 20.53], [43.18, 20.18], [43.53, 20.03], [43.75, 19.5], [43.53, 18.97], [43.0, 18.75], [42.75, 18.85], [42.68, 18.82], [42.63, 18.7], [43.03, 18.53], [43.25, 18.0], [43.15, 17.75], [43.25, 17.5], [43.03, 16.97], [42.5, 16.75], [42.25, 16.85], [42.0, 16.75], [41.47, 16.97], [41.25, 17.5], [41.35, 17.75], [41.32, 17.82], [40.97, 17.97], [40.82, 18.32], [40.47, 18.47], [40.25, 19.0], [40.35, 19.25], [40.32, 19.32], [39.97, 19.47], [39.75, 20.0], [39.88, 20.3], [39.47, 20.47], [39.25, 21.0], [39.47, 21.53], [39.82, 21.68], [39.97, 22.03], [40.5, 22.25]]]]}, "2015-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.5, 22.25], [41.0, 22.04], [41.32, 22.18], [41.35, 22.25], [41.32, 22.32], [40.97, 22.47], [40.75, 23.0], [40.96, 23.5], [40.75, 24.0], [40.85, 24.25], [40.75, 24.5], [40.97, 25.03], [41.5, 25.25], [41.75, 25.15], [42.0, 25.25], [42.25, 25.15], [42.5, 25.25], [42.75, 25.15], [42.82, 25.18], [42.97, 25.53], [43.5, 25.75], [44.03, 25.53], [44.2, 25.13], [44.5, 25.25], [44.75, 25.15], [45.0, 25.25], [45.25, 25.15], [45.32, 25.18], [45.47, 25.53], [46.0, 25.75], [46.25, 25.65], [46.5, 25.75], [46.75, 25.65], [47.0, 25.75], [47.25, 25.65], [47.5, 25.75], [48.03, 25.53], [48.25, 25.0], [48.15, 24.75], [48.25, 24.5], [48.03, 23.97], [47.68, 23.82], [47.53, 23.47], [47.18, 23.32], [47.03, 22.97], [46.68, 22.82], [46.53, 22.47], [46.18, 22.32], [46.15, 22.25], [46.25, 22.0], [46.03, 21.47], [45.68, 21.32], [45.53, 20.97], [45.0, 20.75], [44.75, 20.85], [44.68, 20.82], [44.63, 20.7], [45.03, 20.53], [45.25, 20.0], [45.15, 19.75], [45.18, 19.68], [45.25, 19.65], [45.5, 19.75], [45.75, 19.65], [46.0, 19.75], [46.25, 19.65], [46.5, 19.75], [46.75, 19.65], [47.0, 19.75], [47.53, 19.53], [47.75, 19.0], [47.65, 18.75], [47.68, 18.68], [48.03, 18.53], [48.18, 18.18], [48.25, 18.15], [48.5, 18.25], [48.75, 18.15], [49.0, 18.25], [49.53, 18.03], [49.68, 17.68], [50.03, 17.53], [50.25, 17.0], [50.15, 16.75], [50.25, 16.5], [50.03, 15.97], [49.68, 15.82], [49.53, 15.47], [49.0, 15.25], [48.75, 15.35], [48.68, 15.32], [48.53, 14.97], [48.18, 14.82], [48.03, 14.47], [47.68, 14.32], [47.53, 13.97], [47.0, 13.75], [46.75, 13.85], [46.5, 13.75], [46.25, 13.85], [46.0, 13.75], [45.75, 13.85], [45.5, 13.75], [45.25, 13.85], [45.0, 13.75], [44.47, 13.97], [44.25, 14.5], [44.35, 14.75], [44.32, 14.82], [43.97, 14.97], [43.82, 15.32], [43.75, 15.35], [43.5, 15.25], [43.25, 15.35], [43.0, 15.25], [42.47, 15.47], [42.25, 16.0], [42.35, 16.25], [42.25, 16.5], [42.38, 16.8], [42.25, 16.85], [42.0, 16.75], [41.47, 16.97], [41.25, 17.5], [41.35, 17.75], [41.32, 17.82], [40.97, 17.97], [40.82, 18.32], [40.47, 18.47], [40.25, 19.0], [40.35, 19.25], [40.32, 19.32], [39.97, 19.47], [39.75, 20.0], [39.88, 20.3], [39.47, 20.47], [39.25, 21.0], [39.47, 21.53], [39.82, 21.68], [39.97, 22.03], [40.5, 22.25]], [[43.32, 20.18], [43.46, 20.5], [43.32, 20.82], [43.25, 20.85], [43.0, 20.75], [42.75, 20.85], [42.63, 20.8], [42.68, 20.68], [43.03, 20.53], [43.18, 20.18], [43.25, 20.15], [43.32, 20.18]]]]}, "2015-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, 20.0], [39.97, 20.53], [40.32, 20.68], [40.35, 20.75], [40.25, 21.0], [40.47, 21.53], [40.82, 21.68], [40.97, 22.03], [41.32, 22.18], [41.35, 22.25], [41.32, 22.32], [40.97, 22.47], [40.75, 23.0], [40.96, 23.5], [40.75, 24.0], [40.85, 24.25], [40.75, 24.5], [40.97, 25.03], [41.5, 25.25], [41.75, 25.15], [42.0, 25.25], [42.25, 25.15], [42.5, 25.25], [42.75, 25.15], [42.82, 25.18], [42.97, 25.53], [43.5, 25.75], [44.03, 25.53], [44.2, 25.13], [44.5, 25.25], [44.75, 25.15], [45.0, 25.25], [45.25, 25.15], [45.32, 25.18], [45.47, 25.53], [46.0, 25.75], [46.25, 25.65], [46.5, 25.75], [46.75, 25.65], [47.0, 25.75], [47.25, 25.65], [47.5, 25.75], [48.03, 25.53], [48.25, 25.0], [48.15, 24.75], [48.25, 24.5], [48.03, 23.97], [47.68, 23.82], [47.53, 23.47], [47.18, 23.32], [47.03, 22.97], [46.68, 22.82], [46.53, 22.47], [46.18, 22.32], [46.15, 22.25], [46.25, 22.0], [46.03, 21.47], [45.68, 21.32], [45.53, 20.97], [45.0, 20.75], [44.75, 20.85], [44.68, 20.82], [44.63, 20.7], [45.03, 20.53], [45.25, 20.0], [45.15, 19.75], [45.18, 19.68], [45.25, 19.65], [45.5, 19.75], [45.75, 19.65], [46.0, 19.75], [46.25, 19.65], [46.5, 19.75], [46.75, 19.65], [47.0, 19.75], [47.53, 19.53], [47.75, 19.0], [47.65, 18.75], [47.68, 18.68], [48.03, 18.53], [48.18, 18.18], [48.25, 18.15], [48.5, 18.25], [48.75, 18.15], [49.0, 18.25], [49.53, 18.03], [49.68, 17.68], [50.03, 17.53], [50.25, 17.0], [50.15, 16.75], [50.25, 16.5], [50.03, 15.97], [49.68, 15.82], [49.53, 15.47], [49.13, 15.3], [49.25, 15.0], [49.03, 14.47], [48.5, 14.25], [48.0, 14.46], [47.68, 14.32], [47.53, 13.97], [47.0, 13.75], [46.75, 13.85], [46.5, 13.75], [46.25, 13.85], [46.0, 13.75], [45.75, 13.85], [45.5, 13.75], [45.25, 13.85], [45.0, 13.75], [44.47, 13.97], [44.25, 14.5], [44.35, 14.75], [44.32, 14.82], [43.97, 14.97], [43.82, 15.32], [43.75, 15.35], [43.5, 15.25], [43.25, 15.35], [43.0, 15.25], [42.47, 15.47], [42.25, 16.0], [42.35, 16.25], [42.25, 16.5], [42.38, 16.8], [42.25, 16.85], [42.0, 16.75], [41.47, 16.97], [41.25, 17.5], [41.35, 17.75], [41.32, 17.82], [40.97, 17.97], [40.82, 18.32], [40.47, 18.47], [40.25, 19.0], [40.35, 19.25], [40.32, 19.32], [39.97, 19.47], [39.75, 20.0]], [[43.32, 20.18], [43.46, 20.5], [43.32, 20.82], [43.25, 20.85], [43.0, 20.75], [42.75, 20.85], [42.63, 20.8], [42.68, 20.68], [43.03, 20.53], [43.18, 20.18], [43.25, 20.15], [43.32, 20.18]]]]}, "2015-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.25, 20.0], [41.47, 20.53], [42.0, 20.75], [42.25, 20.65], [42.5, 20.75], [43.03, 20.53], [43.18, 20.18], [43.25, 20.15], [43.32, 20.18], [43.46, 20.5], [43.32, 20.82], [42.97, 20.97], [42.75, 21.5], [42.97, 22.03], [43.32, 22.18], [43.35, 22.25], [43.25, 22.5], [43.47, 23.03], [44.0, 23.25], [44.25, 23.15], [44.5, 23.25], [45.03, 23.03], [45.25, 22.5], [45.03, 21.97], [44.68, 21.82], [44.65, 21.75], [44.75, 21.5], [44.65, 21.25], [44.75, 21.0], [44.63, 20.7], [45.03, 20.53], [45.25, 20.0], [45.15, 19.75], [45.18, 19.68], [45.25, 19.65], [45.5, 19.75], [45.75, 19.65], [46.0, 19.75], [46.25, 19.65], [46.5, 19.75], [46.75, 19.65], [47.0, 19.75], [47.53, 19.53], [47.75, 19.0], [47.65, 18.75], [47.68, 18.68], [48.03, 18.53], [48.18, 18.18], [48.25, 18.15], [48.5, 18.25], [48.75, 18.15], [49.0, 18.25], [49.53, 18.03], [49.68, 17.68], [50.03, 17.53], [50.25, 17.0], [50.15, 16.75], [50.25, 16.5], [50.03, 15.97], [49.68, 15.82], [49.53, 15.47], [49.13, 15.3], [49.25, 15.0], [49.03, 14.47], [48.5, 14.25], [48.0, 14.46], [47.68, 14.32], [47.53, 13.97], [47.0, 13.75], [46.75, 13.85], [46.5, 13.75], [46.25, 13.85], [46.0, 13.75], [45.75, 13.85], [45.5, 13.75], [45.25, 13.85], [45.0, 13.75], [44.47, 13.97], [44.25, 14.5], [44.35, 14.75], [44.32, 14.82], [43.97, 14.97], [43.82, 15.32], [43.75, 15.35], [43.5, 15.25], [43.25, 15.35], [43.0, 15.25], [42.47, 15.47], [42.25, 16.0], [42.35, 16.25], [42.25, 16.5], [42.47, 17.03], [42.82, 17.18], [42.85, 17.25], [42.75, 17.5], [42.85, 17.75], [42.82, 17.82], [42.47, 17.97], [42.25, 18.5], [42.35, 18.75], [42.32, 18.82], [41.97, 18.97], [41.82, 19.32], [41.47, 19.47], [41.25, 20.0]]]]}, "2015-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 14.47], [47.75, 15.0], [47.97, 15.53], [48.5, 15.75], [49.03, 15.53], [49.25, 15.0], [49.03, 14.47], [48.5, 14.25], [47.97, 14.47]]], [[[44.0, 18.75], [44.53, 18.53], [44.68, 18.18], [45.03, 18.03], [45.18, 17.68], [45.53, 17.53], [45.75, 17.0], [45.63, 16.7], [46.03, 16.53], [46.25, 16.0], [46.13, 15.7], [46.53, 15.53], [46.68, 15.18], [47.03, 15.03], [47.25, 14.5], [47.03, 13.97], [46.5, 13.75], [46.25, 13.85], [46.0, 13.75], [45.47, 13.97], [45.32, 14.32], [44.97, 14.47], [44.82, 14.82], [44.47, 14.97], [44.25, 15.5], [44.35, 15.75], [44.25, 16.0], [44.38, 16.3], [43.97, 16.47], [43.82, 16.82], [43.57, 16.93], [43.75, 16.5], [43.53, 15.97], [43.0, 15.75], [42.47, 15.97], [42.25, 16.5], [42.47, 17.03], [43.0, 17.25], [43.43, 17.07], [43.25, 17.5], [43.35, 17.75], [43.25, 18.0], [43.47, 18.53], [44.0, 18.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.309616215293488}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.5974749033064795}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.08725777927191, 12.663862137516787, 12.015231217067537, 13.086705227400444, 13.790034686008255, 14.894920254981685]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.085126900000716, 7.758073793900223, 7.506720956091442, 9.217225126339542, 10.373224111133311, 12.240115351155964]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.087644283318923, -4.7457370270080235, -5.50241531353143, -4.313988280302214, -3.620439252272944, -2.748434751646418]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.297839142106625, -7.110815990024719, -8.309616215293488, -6.8061045839565395, -5.2254736458316415, -3.216081399054872]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7357239696054076, -2.0249135029560468, -2.442642092224089, -1.9226712360520477, -1.6782015520215106, -1.263174877390355]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.924760467458262, -3.0954553431165115, -4.517276403047126, -2.851301855258582, -2.315172500516912, -2.075770345573519]}}