{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:39.987051", "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": "2020-Oct-10_to_2020-Oct-14_44.0_24.5"}, "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": 2020100000300}, "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": "October 10 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 14 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 279808.63706417754}, "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": 24.5}, "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": 44.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 27.53], [42.82, 27.68], [42.97, 28.03], [43.32, 28.18], [43.47, 28.53], [44.0, 28.75], [44.25, 28.65], [44.32, 28.68], [44.47, 29.03], [45.0, 29.25], [45.53, 29.03], [45.68, 28.68], [46.03, 28.53], [46.25, 28.0], [46.15, 27.75], [46.25, 27.5], [46.15, 27.25], [46.18, 27.18], [46.53, 27.03], [46.68, 26.68], [47.03, 26.53], [47.18, 26.18], [47.25, 26.15], [47.5, 26.25], [48.03, 26.03], [48.25, 25.5], [48.03, 24.97], [47.5, 24.75], [47.25, 24.85], [47.18, 24.82], [47.03, 24.47], [46.5, 24.25], [46.25, 24.35], [46.0, 24.25], [45.7, 24.38], [45.53, 23.97], [45.0, 23.75], [44.75, 23.85], [44.5, 23.75], [44.25, 23.85], [44.0, 23.75], [43.47, 23.97], [43.32, 24.32], [42.97, 24.47], [42.82, 24.82], [42.47, 24.97], [42.25, 25.5], [42.46, 26.0], [42.25, 26.5], [42.35, 26.75], [42.25, 27.0], [42.47, 27.53]]]]}, "2020-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.53, 21.47], [42.0, 21.25], [41.75, 21.35], [41.5, 21.25], [40.97, 21.47], [40.75, 22.0], [40.97, 22.53], [41.5, 22.75], [41.75, 22.65], [42.0, 22.75], [42.53, 22.53], [42.75, 22.0], [42.53, 21.47]]], [[[40.75, 24.5], [40.85, 24.75], [40.75, 25.0], [40.85, 25.25], [40.75, 25.5], [40.97, 26.03], [41.32, 26.18], [41.47, 26.53], [42.0, 26.75], [42.25, 26.65], [42.32, 26.68], [42.35, 26.75], [42.25, 27.0], [42.47, 27.53], [42.82, 27.68], [42.97, 28.03], [43.32, 28.18], [43.47, 28.53], [44.0, 28.75], [44.25, 28.65], [44.32, 28.68], [44.47, 29.03], [45.0, 29.25], [45.53, 29.03], [45.68, 28.68], [46.03, 28.53], [46.25, 28.0], [46.15, 27.75], [46.25, 27.5], [46.15, 27.25], [46.18, 27.18], [46.53, 27.03], [46.68, 26.68], [47.03, 26.53], [47.18, 26.18], [47.25, 26.15], [47.5, 26.25], [48.03, 26.03], [48.25, 25.5], [48.03, 24.97], [47.5, 24.75], [47.25, 24.85], [47.18, 24.82], [47.15, 24.75], [47.25, 24.5], [47.04, 24.0], [47.25, 23.5], [47.03, 22.97], [46.5, 22.75], [46.25, 22.85], [46.0, 22.75], [45.75, 22.85], [45.5, 22.75], [45.25, 22.85], [45.0, 22.75], [44.7, 22.88], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.82, 22.82], [42.75, 22.85], [42.5, 22.75], [42.25, 22.85], [42.0, 22.75], [41.75, 22.85], [41.5, 22.75], [40.97, 22.97], [40.75, 23.5], [40.85, 23.75], [40.75, 24.0], [40.85, 24.25], [40.75, 24.5]]]]}, "2020-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 23.03], [40.38, 23.2], [40.25, 23.5], [40.35, 23.75], [40.32, 23.82], [39.97, 23.97], [39.75, 24.5], [39.97, 25.03], [40.5, 25.25], [40.8, 25.13], [40.85, 25.25], [40.75, 25.5], [40.97, 26.03], [41.32, 26.18], [41.47, 26.53], [42.0, 26.75], [42.25, 26.65], [42.32, 26.68], [42.35, 26.75], [42.25, 27.0], [42.47, 27.53], [42.82, 27.68], [42.97, 28.03], [43.32, 28.18], [43.47, 28.53], [44.0, 28.75], [44.25, 28.65], [44.32, 28.68], [44.47, 29.03], [45.0, 29.25], [45.53, 29.03], [45.68, 28.68], [46.03, 28.53], [46.25, 28.0], [46.15, 27.75], [46.25, 27.5], [46.15, 27.25], [46.18, 27.18], [46.53, 27.03], [46.68, 26.68], [47.03, 26.53], [47.18, 26.18], [47.25, 26.15], [47.5, 26.25], [48.03, 26.03], [48.25, 25.5], [48.03, 24.97], [47.5, 24.75], [47.25, 24.85], [47.18, 24.82], [47.15, 24.75], [47.25, 24.5], [47.04, 24.0], [47.25, 23.5], [47.03, 22.97], [46.5, 22.75], [46.25, 22.85], [46.0, 22.75], [45.75, 22.85], [45.5, 22.75], [45.25, 22.85], [45.0, 22.75], [44.7, 22.88], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.82, 22.82], [42.75, 22.85], [42.68, 22.82], [42.65, 22.75], [42.75, 22.5], [42.65, 22.25], [42.75, 22.0], [42.53, 21.47], [42.0, 21.25], [41.75, 21.35], [41.5, 21.25], [41.25, 21.35], [41.0, 21.25], [40.75, 21.35], [40.5, 21.25], [39.97, 21.47], [39.75, 22.0], [39.85, 22.25], [39.75, 22.5], [39.97, 23.03]], [[41.32, 22.68], [41.35, 22.75], [41.32, 22.82], [41.25, 22.85], [41.13, 22.8], [41.18, 22.68], [41.25, 22.65], [41.32, 22.68]]]]}, "2020-10-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 23.03], [40.38, 23.2], [40.25, 23.5], [40.35, 23.75], [40.32, 23.82], [39.97, 23.97], [39.75, 24.5], [39.97, 25.03], [40.5, 25.25], [40.8, 25.13], [40.85, 25.25], [40.75, 25.5], [40.97, 26.03], [41.32, 26.18], [41.47, 26.53], [42.0, 26.75], [42.25, 26.65], [42.5, 26.75], [42.75, 26.65], [42.82, 26.68], [42.97, 27.03], [43.5, 27.25], [43.75, 27.15], [43.82, 27.18], [43.97, 27.53], [44.5, 27.75], [45.03, 27.53], [45.25, 27.0], [45.15, 26.75], [45.18, 26.68], [45.25, 26.65], [45.5, 26.75], [46.03, 26.53], [46.18, 26.18], [46.25, 26.15], [46.5, 26.25], [47.03, 26.03], [47.25, 25.5], [47.15, 25.25], [47.25, 25.0], [47.15, 24.75], [47.25, 24.5], [47.04, 24.0], [47.25, 23.5], [47.03, 22.97], [46.5, 22.75], [46.25, 22.85], [46.0, 22.75], [45.75, 22.85], [45.5, 22.75], [45.25, 22.85], [45.0, 22.75], [44.7, 22.88], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.82, 22.82], [42.75, 22.85], [42.68, 22.82], [42.65, 22.75], [42.75, 22.5], [42.65, 22.25], [42.75, 22.0], [42.53, 21.47], [42.0, 21.25], [41.75, 21.35], [41.5, 21.25], [41.25, 21.35], [41.0, 21.25], [40.75, 21.35], [40.5, 21.25], [39.97, 21.47], [39.75, 22.0], [39.85, 22.25], [39.75, 22.5], [39.97, 23.03]], [[41.32, 22.68], [41.35, 22.75], [41.32, 22.82], [41.25, 22.85], [41.13, 22.8], [41.18, 22.68], [41.25, 22.65], [41.32, 22.68]]]]}, "2020-10-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.97, 23.03], [40.38, 23.2], [40.25, 23.5], [40.35, 23.75], [40.32, 23.82], [39.97, 23.97], [39.75, 24.5], [39.97, 25.03], [40.5, 25.25], [41.0, 25.04], [41.32, 25.18], [41.47, 25.53], [41.82, 25.68], [41.97, 26.03], [42.5, 26.25], [42.75, 26.15], [43.0, 26.25], [43.53, 26.03], [43.75, 25.5], [43.65, 25.25], [43.7, 25.13], [44.0, 25.25], [44.25, 25.15], [44.32, 25.18], [44.38, 25.3], [43.97, 25.47], [43.75, 26.0], [43.97, 26.53], [44.5, 26.75], [45.03, 26.53], [45.25, 26.0], [45.13, 25.7], [45.25, 25.65], [45.5, 25.75], [45.8, 25.63], [45.97, 26.03], [46.5, 26.25], [47.03, 26.03], [47.25, 25.5], [47.03, 24.97], [46.63, 24.8], [46.75, 24.5], [46.65, 24.25], [46.75, 24.0], [46.65, 23.75], [46.75, 23.5], [46.53, 22.97], [46.0, 22.75], [45.75, 22.85], [45.5, 22.75], [45.25, 22.85], [45.0, 22.75], [44.7, 22.88], [44.53, 22.47], [44.0, 22.25], [43.75, 22.35], [43.5, 22.25], [42.97, 22.47], [42.82, 22.82], [42.75, 22.85], [42.68, 22.82], [42.65, 22.75], [42.75, 22.5], [42.65, 22.25], [42.75, 22.0], [42.53, 21.47], [42.0, 21.25], [41.75, 21.35], [41.5, 21.25], [41.25, 21.35], [41.0, 21.25], [40.75, 21.35], [40.5, 21.25], [39.97, 21.47], [39.75, 22.0], [39.85, 22.25], [39.75, 22.5], [39.97, 23.03]], [[41.32, 22.68], [41.35, 22.75], [41.32, 22.82], [41.25, 22.85], [41.13, 22.8], [41.18, 22.68], [41.25, 22.65], [41.32, 22.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.353376691271592}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.291986085773025}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.28244771379417, 24.443816749862606, 24.572984747823057, 24.659467293890316, 24.82675779089226]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.247995611622798, 22.742809918952958, 23.025216845448313, 22.933578679503853, 23.783969332654408]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1079781244025444, -3.738536851958478, -3.430000282861445, -3.1050355924673534, -2.6496899203400948]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.894765435079364, -5.353376691271592, -5.170736284955865, -4.419380425129987, -3.286625824630903]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6928591918521056, -2.338998503027987, -2.2246008564504955, -2.1980362237025517, -2.053822732574887]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0321101767657397, -2.9772502986897385, -3.098030512513357, -3.0968655435123518, -2.579537209467137]}}