{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:59.206937", "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": "2022-May-06_to_2022-May-09_44.5_32.0"}, "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": 2022050000287}, "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": "May 06 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 09 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 316324.41528498457}, "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", "Saudi Arabia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 32.0}, "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": 44.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 38.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 47.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 28.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.25, 30.65], [39.5, 30.75], [39.75, 30.65], [39.82, 30.68], [39.85, 30.75], [39.75, 31.0], [39.85, 31.25], [39.75, 31.5], [39.97, 32.03], [40.32, 32.18], [40.35, 32.25], [40.25, 32.5], [40.47, 33.03], [40.82, 33.18], [40.97, 33.53], [41.32, 33.68], [41.35, 33.75], [41.32, 33.82], [40.97, 33.97], [40.75, 34.5], [40.97, 35.03], [41.5, 35.25], [42.03, 35.03], [42.18, 34.68], [42.53, 34.53], [42.75, 34.0], [42.65, 33.75], [42.75, 33.5], [42.65, 33.25], [42.68, 33.18], [43.03, 33.03], [43.18, 32.68], [43.25, 32.65], [43.32, 32.68], [43.47, 33.03], [43.82, 33.18], [43.85, 33.25], [43.75, 33.5], [43.85, 33.75], [43.75, 34.0], [43.97, 34.53], [44.5, 34.75], [45.03, 34.53], [45.18, 34.18], [45.25, 34.15], [45.5, 34.25], [46.03, 34.03], [46.25, 33.5], [46.15, 33.25], [46.18, 33.18], [46.53, 33.03], [46.68, 32.68], [47.03, 32.53], [47.25, 32.0], [47.15, 31.75], [47.25, 31.5], [47.15, 31.25], [47.18, 31.18], [47.53, 31.03], [47.75, 30.5], [47.53, 29.97], [47.18, 29.82], [47.15, 29.75], [47.25, 29.5], [47.03, 28.97], [46.68, 28.82], [46.53, 28.47], [46.18, 28.32], [46.03, 27.97], [45.5, 27.75], [45.25, 27.85], [45.0, 27.75], [44.75, 27.85], [44.5, 27.75], [43.97, 27.97], [43.8, 28.37], [43.68, 28.32], [43.53, 27.97], [43.18, 27.82], [43.03, 27.47], [42.5, 27.25], [41.97, 27.47], [41.82, 27.82], [41.5, 27.96], [41.0, 27.75], [40.75, 27.85], [40.5, 27.75], [40.25, 27.85], [40.0, 27.75], [39.75, 27.85], [39.5, 27.75], [38.97, 27.97], [38.75, 28.5], [38.85, 28.75], [38.82, 28.82], [38.47, 28.97], [38.25, 29.5], [38.35, 29.75], [38.32, 29.82], [37.97, 29.97], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25]], [[45.07, 31.57], [45.32, 31.68], [45.38, 31.8], [45.25, 31.85], [45.18, 31.82], [45.1, 31.63], [45.07, 31.57]], [[44.65, 31.25], [44.7, 31.13], [44.82, 31.18], [44.93, 31.43], [44.68, 31.32], [44.65, 31.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "W.C.Asia", "Arabian-Peninsula"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.97, 29.97], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.25, 30.65], [39.5, 30.75], [39.75, 30.65], [39.82, 30.68], [39.85, 30.75], [39.75, 31.0], [39.85, 31.25], [39.75, 31.5], [39.97, 32.03], [40.32, 32.18], [40.35, 32.25], [40.25, 32.5], [40.47, 33.03], [40.82, 33.18], [40.97, 33.53], [41.32, 33.68], [41.35, 33.75], [41.32, 33.82], [40.97, 33.97], [40.75, 34.5], [40.97, 35.03], [41.5, 35.25], [42.03, 35.03], [42.18, 34.68], [42.53, 34.53], [42.75, 34.0], [42.65, 33.75], [42.75, 33.5], [42.65, 33.25], [42.68, 33.18], [43.03, 33.03], [43.18, 32.68], [43.25, 32.65], [43.32, 32.68], [43.47, 33.03], [43.82, 33.18], [43.97, 33.53], [44.5, 33.75], [45.03, 33.53], [45.25, 33.0], [45.15, 32.75], [45.25, 32.5], [45.15, 32.25], [45.25, 32.0], [45.03, 31.47], [44.68, 31.32], [44.65, 31.25], [44.75, 31.0], [44.65, 30.75], [44.75, 30.5], [44.65, 30.25], [44.75, 30.0], [44.53, 29.47], [44.18, 29.32], [44.15, 29.25], [44.25, 29.0], [44.03, 28.47], [43.68, 28.32], [43.53, 27.97], [43.18, 27.82], [43.03, 27.47], [42.5, 27.25], [41.97, 27.47], [41.82, 27.82], [41.5, 27.96], [41.0, 27.75], [40.75, 27.85], [40.5, 27.75], [40.25, 27.85], [40.0, 27.75], [39.75, 27.85], [39.5, 27.75], [38.97, 27.97], [38.75, 28.5], [38.85, 28.75], [38.82, 28.82], [38.47, 28.97], [38.25, 29.5], [38.35, 29.75], [38.32, 29.82], [37.97, 29.97]]]]}, "2022-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.97, 29.97], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.25, 30.65], [39.5, 30.75], [39.75, 30.65], [39.82, 30.68], [39.85, 30.75], [39.75, 31.0], [39.85, 31.25], [39.75, 31.5], [39.97, 32.03], [40.32, 32.18], [40.35, 32.25], [40.25, 32.5], [40.47, 33.03], [40.82, 33.18], [40.97, 33.53], [41.32, 33.68], [41.35, 33.75], [41.32, 33.82], [40.97, 33.97], [40.75, 34.5], [40.97, 35.03], [41.5, 35.25], [42.03, 35.03], [42.18, 34.68], [42.53, 34.53], [42.75, 34.0], [42.65, 33.75], [42.75, 33.5], [42.65, 33.25], [42.68, 33.18], [43.03, 33.03], [43.18, 32.68], [43.25, 32.65], [43.32, 32.68], [43.47, 33.03], [43.82, 33.18], [43.85, 33.25], [43.75, 33.5], [43.85, 33.75], [43.75, 34.0], [43.97, 34.53], [44.5, 34.75], [45.03, 34.53], [45.18, 34.18], [45.25, 34.15], [45.5, 34.25], [46.03, 34.03], [46.25, 33.5], [46.15, 33.25], [46.18, 33.18], [46.53, 33.03], [46.68, 32.68], [47.03, 32.53], [47.25, 32.0], [47.15, 31.75], [47.25, 31.5], [47.15, 31.25], [47.18, 31.18], [47.53, 31.03], [47.75, 30.5], [47.53, 29.97], [47.18, 29.82], [47.15, 29.75], [47.25, 29.5], [47.03, 28.97], [46.68, 28.82], [46.53, 28.47], [46.18, 28.32], [46.03, 27.97], [45.5, 27.75], [45.25, 27.85], [45.0, 27.75], [44.75, 27.85], [44.5, 27.75], [43.97, 27.97], [43.8, 28.38], [43.68, 28.32], [43.53, 27.97], [43.18, 27.82], [43.03, 27.47], [42.5, 27.25], [41.97, 27.47], [41.82, 27.82], [41.5, 27.96], [41.0, 27.75], [40.75, 27.85], [40.5, 27.75], [40.25, 27.85], [40.0, 27.75], [39.75, 27.85], [39.5, 27.75], [38.97, 27.97], [38.75, 28.5], [38.85, 28.75], [38.82, 28.82], [38.47, 28.97], [38.25, 29.5], [38.35, 29.75], [38.32, 29.82], [37.97, 29.97]], [[44.7, 31.13], [44.82, 31.18], [44.93, 31.43], [44.68, 31.32], [44.65, 31.25], [44.7, 31.13]], [[45.07, 31.57], [45.32, 31.68], [45.38, 31.8], [45.25, 31.85], [45.18, 31.82], [45.07, 31.57]]]]}, "2022-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[37.97, 29.97], [37.75, 30.5], [37.97, 31.03], [38.5, 31.25], [39.03, 31.03], [39.18, 30.68], [39.25, 30.65], [39.5, 30.75], [39.75, 30.65], [39.82, 30.68], [39.85, 30.75], [39.75, 31.0], [39.85, 31.25], [39.75, 31.5], [39.97, 32.03], [40.32, 32.18], [40.35, 32.25], [40.25, 32.5], [40.47, 33.03], [40.82, 33.18], [40.97, 33.53], [41.32, 33.68], [41.35, 33.75], [41.32, 33.82], [40.97, 33.97], [40.75, 34.5], [40.97, 35.03], [41.5, 35.25], [42.03, 35.03], [42.18, 34.68], [42.53, 34.53], [42.75, 34.0], [42.65, 33.75], [42.75, 33.5], [42.65, 33.25], [42.68, 33.18], [43.03, 33.03], [43.18, 32.68], [43.25, 32.65], [43.32, 32.68], [43.47, 33.03], [43.82, 33.18], [43.85, 33.25], [43.75, 33.5], [43.85, 33.75], [43.75, 34.0], [43.97, 34.53], [44.5, 34.75], [45.03, 34.53], [45.18, 34.18], [45.25, 34.15], [45.5, 34.25], [46.03, 34.03], [46.25, 33.5], [46.15, 33.25], [46.18, 33.18], [46.53, 33.03], [46.68, 32.68], [47.03, 32.53], [47.25, 32.0], [47.15, 31.75], [47.25, 31.5], [47.15, 31.25], [47.18, 31.18], [47.53, 31.03], [47.75, 30.5], [47.53, 29.97], [47.18, 29.82], [47.15, 29.75], [47.25, 29.5], [47.03, 28.97], [46.68, 28.82], [46.53, 28.47], [46.18, 28.32], [46.03, 27.97], [45.5, 27.75], [45.25, 27.85], [45.0, 27.75], [44.75, 27.85], [44.5, 27.75], [43.97, 27.97], [43.8, 28.38], [43.68, 28.32], [43.53, 27.97], [43.18, 27.82], [43.03, 27.47], [42.5, 27.25], [41.97, 27.47], [41.82, 27.82], [41.5, 27.96], [41.0, 27.75], [40.75, 27.85], [40.5, 27.75], [40.25, 27.85], [40.0, 27.75], [39.75, 27.85], [39.5, 27.75], [38.97, 27.97], [38.75, 28.5], [38.85, 28.75], [38.82, 28.82], [38.47, 28.97], [38.25, 29.5], [38.35, 29.75], [38.32, 29.82], [37.97, 29.97]], [[44.7, 31.13], [44.82, 31.18], [44.93, 31.43], [44.68, 31.32], [44.65, 31.25], [44.7, 31.13]], [[45.07, 31.57], [45.32, 31.68], [45.38, 31.8], [45.25, 31.85], [45.18, 31.82], [45.07, 31.57]]]]}, "2022-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.75, 29.0], [43.96, 29.5], [43.75, 30.0], [43.97, 30.53], [44.32, 30.68], [44.47, 31.03], [44.82, 31.18], [44.93, 31.43], [44.5, 31.25], [43.97, 31.47], [43.75, 32.0], [43.97, 32.53], [44.32, 32.68], [44.35, 32.75], [44.32, 32.82], [43.97, 32.97], [43.75, 33.5], [43.85, 33.75], [43.75, 34.0], [43.97, 34.53], [44.5, 34.75], [45.03, 34.53], [45.18, 34.18], [45.25, 34.15], [45.5, 34.25], [46.03, 34.03], [46.25, 33.5], [46.15, 33.25], [46.18, 33.18], [46.53, 33.03], [46.68, 32.68], [47.03, 32.53], [47.25, 32.0], [47.15, 31.75], [47.25, 31.5], [47.15, 31.25], [47.18, 31.18], [47.53, 31.03], [47.75, 30.5], [47.53, 29.97], [47.18, 29.82], [47.15, 29.75], [47.25, 29.5], [47.03, 28.97], [46.68, 28.82], [46.53, 28.47], [46.18, 28.32], [46.03, 27.97], [45.5, 27.75], [45.25, 27.85], [45.0, 27.75], [44.75, 27.85], [44.5, 27.75], [43.97, 27.97], [43.75, 28.5], [43.85, 28.75], [43.75, 29.0]], [[45.07, 31.57], [45.32, 31.68], [45.38, 31.8], [45.25, 31.85], [45.18, 31.82], [45.07, 31.57]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.705966930600539}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.0184103828179545}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.53239816119094, 21.985138671282186, 23.197709754797472, 26.088647740455087]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.41728169402404, 18.265939486088143, 19.795909598798232, 24.87005073811605]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.96048448864968, -5.6415223729936255, -4.645847792258138, -4.342531211512008]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.458069970967642, -6.705966930600539, -5.67887129869888, -4.877206020986307]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6756090153699879, -1.9251371063117164, -1.5769734150449057, -1.521072575159823]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.027404709497438, -2.249890535981787, -2.096512913192859, -1.8092943065102383]}}