{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:10.091428", "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": "2011-Apr-13_to_2011-Apr-15_46.0_30.0"}, "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": 2011040000753}, "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": "April 13 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2011"}, "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": 153216.55785543902}, "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": ["Iraq", "Kuwait", "Saudi Arabia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arabian-Peninsula", "W.C.Asia"]}, "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": ["Persian Gulf"]}, "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": 30.0}, "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": 46.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "46.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 28.53], [42.82, 28.68], [42.85, 28.75], [42.75, 29.0], [42.97, 29.53], [43.32, 29.68], [43.35, 29.75], [43.25, 30.0], [43.35, 30.25], [43.25, 30.5], [43.47, 31.03], [43.82, 31.18], [43.85, 31.25], [43.75, 31.5], [43.85, 31.75], [43.75, 32.0], [43.97, 32.53], [44.5, 32.75], [45.03, 32.53], [45.2, 32.13], [45.5, 32.25], [46.03, 32.03], [46.18, 31.68], [46.5, 31.54], [47.0, 31.75], [47.53, 31.53], [47.68, 31.18], [47.75, 31.15], [48.0, 31.25], [48.53, 31.03], [48.75, 30.5], [48.65, 30.25], [48.75, 30.0], [48.53, 29.47], [48.18, 29.32], [48.15, 29.25], [48.25, 29.0], [48.03, 28.47], [47.68, 28.32], [47.53, 27.97], [47.0, 27.75], [46.75, 27.85], [46.5, 27.75], [46.25, 27.85], [46.18, 27.82], [46.03, 27.47], [45.5, 27.25], [45.25, 27.35], [45.0, 27.25], [44.75, 27.35], [44.5, 27.25], [44.25, 27.35], [44.0, 27.25], [43.75, 27.35], [43.68, 27.32], [43.53, 26.97], [43.0, 26.75], [42.47, 26.97], [42.25, 27.5], [42.35, 27.75], [42.25, 28.0], [42.47, 28.53]]]]}, "2011-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 28.53], [42.82, 28.68], [42.85, 28.75], [42.75, 29.0], [42.97, 29.53], [43.32, 29.68], [43.35, 29.75], [43.25, 30.0], [43.35, 30.25], [43.25, 30.5], [43.47, 31.03], [43.82, 31.18], [43.85, 31.25], [43.75, 31.5], [43.85, 31.75], [43.75, 32.0], [43.97, 32.53], [44.5, 32.75], [45.03, 32.53], [45.2, 32.13], [45.5, 32.25], [46.03, 32.03], [46.18, 31.68], [46.5, 31.54], [47.0, 31.75], [47.53, 31.53], [47.68, 31.18], [47.75, 31.15], [48.0, 31.25], [48.53, 31.03], [48.75, 30.5], [48.65, 30.25], [48.75, 30.0], [48.53, 29.47], [48.18, 29.32], [48.15, 29.25], [48.25, 29.0], [48.03, 28.47], [47.68, 28.32], [47.53, 27.97], [47.0, 27.75], [46.75, 27.85], [46.5, 27.75], [46.25, 27.85], [46.18, 27.82], [46.03, 27.47], [45.5, 27.25], [45.25, 27.35], [45.0, 27.25], [44.75, 27.35], [44.5, 27.25], [44.25, 27.35], [44.0, 27.25], [43.75, 27.35], [43.68, 27.32], [43.53, 26.97], [43.0, 26.75], [42.47, 26.97], [42.25, 27.5], [42.35, 27.75], [42.25, 28.0], [42.47, 28.53]]]]}, "2011-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 28.53], [42.82, 28.68], [42.85, 28.75], [42.75, 29.0], [42.97, 29.53], [43.32, 29.68], [43.35, 29.75], [43.25, 30.0], [43.35, 30.25], [43.25, 30.5], [43.47, 31.03], [43.82, 31.18], [43.85, 31.25], [43.75, 31.5], [43.85, 31.75], [43.75, 32.0], [43.97, 32.53], [44.5, 32.75], [45.03, 32.53], [45.2, 32.13], [45.5, 32.25], [46.03, 32.03], [46.18, 31.68], [46.5, 31.54], [47.0, 31.75], [47.53, 31.53], [47.68, 31.18], [47.75, 31.15], [48.0, 31.25], [48.53, 31.03], [48.75, 30.5], [48.65, 30.25], [48.75, 30.0], [48.53, 29.47], [48.18, 29.32], [48.15, 29.25], [48.25, 29.0], [48.03, 28.47], [47.68, 28.32], [47.53, 27.97], [47.0, 27.75], [46.75, 27.85], [46.5, 27.75], [46.25, 27.85], [46.18, 27.82], [46.03, 27.47], [45.5, 27.25], [45.25, 27.35], [45.0, 27.25], [44.75, 27.35], [44.5, 27.25], [44.25, 27.35], [44.0, 27.25], [43.75, 27.35], [43.68, 27.32], [43.53, 26.97], [43.0, 26.75], [42.47, 26.97], [42.25, 27.5], [42.35, 27.75], [42.25, 28.0], [42.47, 28.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.194762096774355}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.332515142992594}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.96965909805232, 18.530450115108977, 20.172655948182353]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.443196686271335, 17.15765494020451, 19.064117989171393]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.457677058699831, -5.990885235897571, -4.54898313438038]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.194762096774355, -6.685475899395897, -5.386808520766067]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7155960755362636, -1.8833606903242888, -1.4614686075624248]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3436004421789494, -2.0684059892433835, -1.7156901908993858]}}