{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:50.949520", "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-Nov-29_to_2012-Dec-05_48.5_22.5"}, "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": 2012110001091}, "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 29 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 05 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 371717.1249440062}, "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": 22.5}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\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": 51.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.75}, "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": {"2012-11-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 22.5], [39.47, 23.03], [39.82, 23.18], [39.97, 23.53], [40.32, 23.68], [40.47, 24.03], [41.0, 24.25], [41.25, 24.15], [41.5, 24.25], [41.75, 24.15], [42.0, 24.25], [42.3, 24.13], [42.47, 24.53], [43.0, 24.75], [43.53, 24.53], [43.68, 24.18], [43.75, 24.15], [44.0, 24.25], [44.25, 24.15], [44.38, 24.2], [44.25, 24.5], [44.35, 24.75], [44.25, 25.0], [44.47, 25.53], [45.0, 25.75], [45.25, 25.65], [45.5, 25.75], [45.75, 25.65], [46.0, 25.75], [46.25, 25.65], [46.5, 25.75], [47.03, 25.53], [47.2, 25.13], [47.5, 25.25], [47.75, 25.15], [48.0, 25.25], [48.53, 25.03], [48.68, 24.68], [49.03, 24.53], [49.25, 24.0], [49.03, 23.47], [48.68, 23.32], [48.63, 23.2], [48.75, 23.15], [49.0, 23.25], [49.53, 23.03], [49.75, 22.5], [49.53, 21.97], [49.18, 21.82], [49.03, 21.47], [48.5, 21.25], [48.25, 21.35], [48.18, 21.32], [48.03, 20.97], [47.5, 20.75], [47.25, 20.85], [47.0, 20.75], [46.47, 20.97], [46.25, 21.5], [46.35, 21.75], [46.32, 21.82], [46.25, 21.85], [46.0, 21.75], [45.75, 21.85], [45.68, 21.82], [45.53, 21.47], [45.0, 21.25], [44.75, 21.35], [44.68, 21.32], [44.53, 20.97], [44.18, 20.82], [44.03, 20.47], [43.68, 20.32], [43.53, 19.97], [43.13, 19.8], [43.25, 19.5], [43.15, 19.25], [43.25, 19.0], [43.03, 18.47], [42.5, 18.25], [41.97, 18.47], [41.75, 19.0], [41.85, 19.25], [41.82, 19.32], [41.75, 19.35], [41.5, 19.25], [40.97, 19.47], [40.75, 20.0], [40.85, 20.25], [40.82, 20.32], [40.47, 20.47], [40.32, 20.82], [39.97, 20.97], [39.75, 21.5], [39.85, 21.75], [39.82, 21.82], [39.47, 21.97], [39.25, 22.5]], [[43.18, 22.18], [43.3, 22.13], [43.46, 22.5], [43.32, 22.82], [42.97, 22.97], [42.82, 23.32], [42.7, 23.38], [42.65, 23.25], [42.75, 23.0], [42.65, 22.75], [42.68, 22.68], [43.03, 22.53], [43.18, 22.18]]]]}, "2012-11-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 22.5], [39.47, 23.03], [39.82, 23.18], [39.97, 23.53], [40.32, 23.68], [40.47, 24.03], [41.0, 24.25], [41.25, 24.15], [41.5, 24.25], [41.75, 24.15], [42.0, 24.25], [42.3, 24.13], [42.47, 24.53], [43.0, 24.75], [43.53, 24.53], [43.68, 24.18], [43.75, 24.15], [44.0, 24.25], [44.25, 24.15], [44.38, 24.2], [44.25, 24.5], [44.35, 24.75], [44.25, 25.0], [44.47, 25.53], [45.0, 25.75], [45.25, 25.65], [45.5, 25.75], [45.75, 25.65], [46.0, 25.75], [46.25, 25.65], [46.5, 25.75], [47.03, 25.53], [47.2, 25.13], [47.5, 25.25], [47.75, 25.15], [48.0, 25.25], [48.53, 25.03], [48.68, 24.68], [49.03, 24.53], [49.25, 24.0], [49.03, 23.47], [48.68, 23.32], [48.63, 23.2], [48.75, 23.15], [49.0, 23.25], [49.25, 23.15], [49.5, 23.25], [49.75, 23.15], [50.0, 23.25], [50.25, 23.15], [50.5, 23.25], [51.03, 23.03], [51.25, 22.5], [51.03, 21.97], [50.68, 21.82], [50.63, 21.7], [51.03, 21.53], [51.18, 21.18], [51.53, 21.03], [51.75, 20.5], [51.53, 19.97], [51.0, 19.75], [50.75, 19.85], [50.5, 19.75], [50.25, 19.85], [50.0, 19.75], [49.47, 19.97], [49.25, 20.5], [49.43, 20.93], [49.18, 20.82], [49.03, 20.47], [48.5, 20.25], [48.25, 20.35], [48.13, 20.3], [48.25, 20.0], [48.03, 19.47], [47.5, 19.25], [47.25, 19.35], [47.0, 19.25], [46.47, 19.47], [46.25, 20.0], [46.47, 20.53], [46.88, 20.7], [46.82, 20.82], [46.47, 20.97], [46.25, 21.5], [46.35, 21.75], [46.32, 21.82], [46.25, 21.85], [46.0, 21.75], [45.75, 21.85], [45.68, 21.82], [45.53, 21.47], [45.0, 21.25], [44.75, 21.35], [44.68, 21.32], [44.53, 20.97], [44.18, 20.82], [44.03, 20.47], [43.68, 20.32], [43.53, 19.97], [43.13, 19.8], [43.25, 19.5], [43.15, 19.25], [43.25, 19.0], [43.03, 18.47], [42.5, 18.25], [41.97, 18.47], [41.75, 19.0], [41.85, 19.25], [41.82, 19.32], [41.75, 19.35], [41.5, 19.25], [40.97, 19.47], [40.75, 20.0], [40.85, 20.25], [40.82, 20.32], [40.47, 20.47], [40.32, 20.82], [39.97, 20.97], [39.75, 21.5], [39.85, 21.75], [39.82, 21.82], [39.47, 21.97], [39.25, 22.5]], [[43.18, 22.18], [43.3, 22.13], [43.46, 22.5], [43.32, 22.82], [42.97, 22.97], [42.82, 23.32], [42.7, 23.38], [42.65, 23.25], [42.75, 23.0], [42.65, 22.75], [42.68, 22.68], [43.03, 22.53], [43.18, 22.18]], [[49.82, 21.18], [49.88, 21.3], [49.75, 21.35], [49.68, 21.32], [49.57, 21.07], [49.82, 21.18]]]]}, "2012-12-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.25, 22.5], [39.47, 23.03], [39.82, 23.18], [39.97, 23.53], [40.32, 23.68], [40.47, 24.03], [41.0, 24.25], [41.25, 24.15], [41.5, 24.25], [41.75, 24.15], [42.0, 24.25], [42.3, 24.13], [42.47, 24.53], [43.0, 24.75], [43.53, 24.53], [43.68, 24.18], [43.75, 24.15], [44.0, 24.25], [44.25, 24.15], [44.38, 24.2], [44.25, 24.5], [44.35, 24.75], [44.25, 25.0], [44.47, 25.53], [45.0, 25.75], [45.25, 25.65], [45.5, 25.75], [45.75, 25.65], [46.0, 25.75], [46.25, 25.65], [46.5, 25.75], [47.03, 25.53], [47.18, 25.18], [47.25, 25.15], [47.5, 25.25], [47.75, 25.15], [48.0, 25.25], [48.53, 25.03], [48.68, 24.68], [49.03, 24.53], [49.25, 24.0], [49.15, 23.75], [49.18, 23.68], [49.25, 23.65], [49.5, 23.75], [50.03, 23.53], [50.18, 23.18], [50.25, 23.15], [50.5, 23.25], [51.03, 23.03], [51.25, 22.5], [51.03, 21.97], [50.68, 21.82], [50.65, 21.75], [50.68, 21.68], [51.03, 21.53], [51.18, 21.18], [51.53, 21.03], [51.75, 20.5], [51.53, 19.97], [51.0, 19.75], [50.75, 19.85], [50.5, 19.75], [50.25, 19.85], [50.0, 19.75], [49.75, 19.85], [49.5, 19.75], [48.97, 19.97], [48.82, 20.32], [48.75, 20.35], [48.5, 20.25], [48.25, 20.35], [48.13, 20.3], [48.25, 20.0], [48.03, 19.47], [47.5, 19.25], [47.25, 19.35], [47.0, 19.25], [46.47, 19.47], [46.25, 20.0], [46.47, 20.53], [46.88, 20.7], [46.82, 20.82], [46.47, 20.97], [46.25, 21.5], [46.35, 21.75], [46.32, 21.82], [46.25, 21.85], [46.0, 21.75], [45.75, 21.85], [45.68, 21.82], [45.53, 21.47], [45.0, 21.25], [44.75, 21.35], [44.68, 21.32], [44.53, 20.97], [44.18, 20.82], [44.03, 20.47], [43.68, 20.32], [43.53, 19.97], [43.13, 19.8], [43.25, 19.5], [43.15, 19.25], [43.25, 19.0], [43.03, 18.47], [42.5, 18.25], [41.97, 18.47], [41.75, 19.0], [41.85, 19.25], [41.82, 19.32], [41.75, 19.35], [41.5, 19.25], [40.97, 19.47], [40.75, 20.0], [40.85, 20.25], [40.82, 20.32], [40.47, 20.47], [40.32, 20.82], [39.97, 20.97], [39.75, 21.5], [39.85, 21.75], [39.82, 21.82], [39.47, 21.97], [39.25, 22.5]], [[43.18, 22.18], [43.3, 22.13], [43.46, 22.5], [43.32, 22.82], [42.97, 22.97], [42.82, 23.32], [42.7, 23.38], [42.65, 23.25], [42.75, 23.0], [42.65, 22.75], [42.68, 22.68], [43.03, 22.53], [43.18, 22.18]]]]}, "2012-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.97, 25.03], [45.5, 25.25], [45.75, 25.15], [46.0, 25.25], [46.5, 25.04], [47.0, 25.25], [47.25, 25.15], [47.5, 25.25], [47.75, 25.15], [48.0, 25.25], [48.5, 25.04], [49.0, 25.25], [49.25, 25.15], [49.5, 25.25], [50.03, 25.03], [50.25, 24.5], [50.15, 24.25], [50.25, 24.0], [50.04, 23.5], [50.18, 23.18], [50.25, 23.15], [50.5, 23.25], [51.03, 23.03], [51.25, 22.5], [51.03, 21.97], [50.68, 21.82], [50.65, 21.75], [50.68, 21.68], [51.03, 21.53], [51.18, 21.18], [51.53, 21.03], [51.75, 20.5], [51.53, 19.97], [51.0, 19.75], [50.75, 19.85], [50.5, 19.75], [50.25, 19.85], [50.18, 19.82], [50.03, 19.47], [49.5, 19.25], [49.25, 19.35], [49.0, 19.25], [48.75, 19.35], [48.5, 19.25], [48.25, 19.35], [48.0, 19.25], [47.75, 19.35], [47.5, 19.25], [47.25, 19.35], [47.0, 19.25], [46.47, 19.47], [46.25, 20.0], [46.47, 20.53], [46.88, 20.7], [46.82, 20.82], [46.47, 20.97], [46.25, 21.5], [46.35, 21.75], [46.32, 21.82], [46.25, 21.85], [46.0, 21.75], [45.47, 21.97], [45.32, 22.32], [44.97, 22.47], [44.75, 23.0], [44.96, 23.5], [44.75, 24.0], [44.85, 24.25], [44.75, 24.5], [44.97, 25.03]]]]}, "2012-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.47, 23.53], [46.0, 23.75], [46.3, 23.63], [46.35, 23.75], [46.25, 24.0], [46.35, 24.25], [46.25, 24.5], [46.47, 25.03], [47.0, 25.25], [47.25, 25.15], [47.5, 25.25], [47.75, 25.15], [48.0, 25.25], [48.5, 25.04], [49.0, 25.25], [49.25, 25.15], [49.5, 25.25], [50.03, 25.03], [50.25, 24.5], [50.15, 24.25], [50.25, 24.0], [50.04, 23.5], [50.18, 23.18], [50.25, 23.15], [50.5, 23.25], [51.03, 23.03], [51.25, 22.5], [51.03, 21.97], [50.68, 21.82], [50.65, 21.75], [50.68, 21.68], [51.03, 21.53], [51.18, 21.18], [51.53, 21.03], [51.75, 20.5], [51.53, 19.97], [51.0, 19.75], [50.75, 19.85], [50.5, 19.75], [50.25, 19.85], [50.18, 19.82], [50.03, 19.47], [49.5, 19.25], [49.25, 19.35], [49.0, 19.25], [48.75, 19.35], [48.5, 19.25], [48.25, 19.35], [48.0, 19.25], [47.75, 19.35], [47.5, 19.25], [47.25, 19.35], [47.0, 19.25], [46.47, 19.47], [46.25, 20.0], [46.47, 20.53], [46.88, 20.7], [46.75, 21.0], [46.85, 21.25], [46.82, 21.32], [46.47, 21.47], [46.3, 21.88], [46.0, 21.75], [45.47, 21.97], [45.25, 22.5], [45.35, 22.75], [45.25, 23.0], [45.47, 23.53]]]]}, "2012-12-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.47, 23.03], [46.82, 23.18], [46.85, 23.25], [46.75, 23.5], [46.85, 23.75], [46.75, 24.0], [46.97, 24.53], [47.5, 24.75], [47.75, 24.65], [48.0, 24.75], [48.25, 24.65], [48.32, 24.68], [48.47, 25.03], [49.0, 25.25], [49.25, 25.15], [49.5, 25.25], [50.03, 25.03], [50.25, 24.5], [50.15, 24.25], [50.25, 24.0], [50.04, 23.5], [50.18, 23.18], [50.25, 23.15], [50.5, 23.25], [51.03, 23.03], [51.25, 22.5], [51.03, 21.97], [50.68, 21.82], [50.65, 21.75], [50.75, 21.5], [50.65, 21.25], [50.75, 21.0], [50.65, 20.75], [50.75, 20.5], [50.53, 19.97], [50.18, 19.82], [50.03, 19.47], [49.5, 19.25], [49.25, 19.35], [49.0, 19.25], [48.75, 19.35], [48.5, 19.25], [48.25, 19.35], [48.0, 19.25], [47.75, 19.35], [47.5, 19.25], [46.97, 19.47], [46.75, 20.0], [46.96, 20.5], [46.75, 21.0], [46.88, 21.3], [46.47, 21.47], [46.25, 22.0], [46.35, 22.25], [46.25, 22.5], [46.47, 23.03]]]]}, "2012-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.5, 23.25], [49.03, 23.03], [49.25, 22.5], [49.03, 21.97], [48.5, 21.75], [47.97, 21.97], [47.75, 22.5], [47.97, 23.03], [48.5, 23.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.713161632365143}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.451532386903534}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.502814609620884, 15.153537954673652, 14.855198686506697, 14.667635641842764, 14.33474817071874, 14.572827342551989, 14.60491633398317]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.574217478601156, 12.290422715901514, 11.429305808426136, 12.36906578203633, 12.442343728391563, 13.084451338398594, 14.60491633398317]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.644105935595404, -4.103699061058331, -4.278777096830134, -4.526128559142478, -4.888793850198913, -4.583662198639947, -3.8669911951812423]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.713161632365143, -5.663581561008925, -5.722853738828803, -5.541316837957936, -6.0208406718487595, -5.8427440332114315, -3.8669911951812423]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.968379056237584, -1.6844218437756633, -1.6516753385599536, -1.574630309508197, -1.6331615086543925, -1.470103610598561, -1.2170309487755067]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7431347761965705, -2.574183696251554, -2.380673895952448, -1.9008414988863709, -1.9017755165516037, -1.7949090634942546, -1.2170309487755067]}}