{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:22.240624", "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-Feb-28_to_2026-Mar-03_44.5_38.0"}, "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": 2026020000735}, "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": "February 28 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2026"}, "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": 64645.414804346285}, "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, Islamic Republic of", "Iraq", "T\u00fcrkiye"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "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": 38.0}, "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": 42.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[43.25, 39.15], [43.5, 39.25], [43.75, 39.15], [44.0, 39.25], [44.53, 39.03], [44.68, 38.68], [45.03, 38.53], [45.25, 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"description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.25, 38.5], [42.47, 39.03], [43.0, 39.25], [43.25, 39.15], [43.5, 39.25], [43.75, 39.15], [44.0, 39.25], [44.53, 39.03], [44.68, 38.68], [45.03, 38.53], [45.25, 38.0], [45.15, 37.75], [45.18, 37.68], [45.53, 37.53], [45.75, 37.0], [45.53, 36.47], [45.18, 36.32], [45.15, 36.25], [45.18, 36.18], [45.53, 36.03], [45.75, 35.5], [45.63, 35.2], [45.75, 35.15], [46.0, 35.25], [46.53, 35.03], [46.75, 34.5], [46.65, 34.25], [46.75, 34.0], [46.53, 33.47], [46.0, 33.25], [45.47, 33.47], [45.32, 33.82], [44.97, 33.97], [44.75, 34.5], [44.88, 34.8], [44.47, 34.97], [44.32, 35.32], [44.0, 35.46], [43.5, 35.25], [42.97, 35.47], [42.75, 36.0], [42.97, 36.53], [43.5, 36.75], [43.8, 36.63], [43.85, 36.75], [43.75, 37.0], 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