{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:59:34.832789", "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": "2026-May-19_to_2026-May-23_46.0_35.5"}, "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": 2026050000437}, "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 19 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 23 2026"}, "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": 66874.83703062478}, "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": ["Iran", "Iraq"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": []}, "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": 35.5}, "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": 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": 46.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 35.03], [43.0, 35.25], [43.25, 35.15], [43.5, 35.25], [43.75, 35.15], [44.0, 35.25], [44.25, 35.15], [44.5, 35.25], [44.75, 35.15], [44.82, 35.18], [44.97, 35.53], [45.32, 35.68], [45.47, 36.03], [46.0, 36.25], [46.53, 36.03], [46.75, 35.5], [46.53, 34.97], [46.18, 34.82], [46.15, 34.75], [46.25, 34.5], [46.03, 33.97], [45.68, 33.82], [45.53, 33.47], [45.0, 33.25], [44.47, 33.47], [44.32, 33.82], [44.25, 33.85], [44.18, 33.82], [44.03, 33.47], [43.5, 33.25], [43.25, 33.35], [43.0, 33.25], [42.47, 33.47], [42.25, 34.0], [42.35, 34.25], [42.25, 34.5], [42.47, 35.03]]]]}, "2026-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 35.03], [43.0, 35.25], [43.25, 35.15], [43.5, 35.25], [43.75, 35.15], [44.0, 35.25], [44.25, 35.15], [44.5, 35.25], [44.75, 35.15], [44.82, 35.18], [44.97, 35.53], [45.32, 35.68], [45.47, 36.03], [46.0, 36.25], [46.53, 36.03], [46.75, 35.5], [46.53, 34.97], [46.18, 34.82], [46.15, 34.75], [46.25, 34.5], [46.04, 34.0], [46.25, 33.5], [46.15, 33.25], [46.25, 33.0], [46.03, 32.47], [45.68, 32.32], [45.65, 32.25], [45.75, 32.0], [45.65, 31.75], [45.75, 31.5], [45.53, 30.97], [45.0, 30.75], [44.47, 30.97], [44.25, 31.5], [44.35, 31.75], [44.32, 31.82], [43.97, 31.97], [43.82, 32.32], [43.47, 32.47], [43.32, 32.82], [42.97, 32.97], [42.82, 33.32], [42.47, 33.47], [42.25, 34.0], [42.35, 34.25], [42.25, 34.5], [42.47, 35.03]]]]}, "2026-05-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 35.03], [43.0, 35.25], [43.25, 35.15], [43.5, 35.25], [43.75, 35.15], [44.0, 35.25], [44.25, 35.15], [44.5, 35.25], [44.75, 35.15], [44.82, 35.18], [44.97, 35.53], [45.32, 35.68], [45.47, 36.03], [46.0, 36.25], [46.53, 36.03], [46.75, 35.5], [46.53, 34.97], [46.18, 34.82], [46.15, 34.75], [46.25, 34.5], [46.04, 34.0], [46.25, 33.5], [46.15, 33.25], [46.25, 33.0], [46.03, 32.47], [45.68, 32.32], [45.65, 32.25], [45.75, 32.0], [45.65, 31.75], [45.75, 31.5], [45.53, 30.97], [45.0, 30.75], [44.47, 30.97], [44.25, 31.5], [44.35, 31.75], [44.32, 31.82], [43.97, 31.97], 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"2026-05-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[45.32, 35.68], [45.47, 36.03], [46.0, 36.25], [46.53, 36.03], [46.75, 35.5], [46.53, 34.97], [46.18, 34.82], [46.15, 34.75], [46.25, 34.5], [46.04, 34.0], [46.25, 33.5], [46.03, 32.97], [45.5, 32.75], [44.97, 32.97], [44.75, 33.5], [44.88, 33.8], [44.47, 33.97], [44.25, 34.5], [44.47, 35.03], [44.82, 35.18], [44.97, 35.53], [45.32, 35.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.406066827926338}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.595742779199332}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.535635422215364, 26.026062950721155, 26.691416285588218, 26.191991326747825, 24.418258921305323]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily 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daily evolution of maximum standardized t2m anomalies.", "value": [-2.1244305043332865, -2.6882730572728177, -1.979517437277266, -2.2974923059841514, -1.653786919716008]}}