{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:51.464923", "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": "2024-Sep-06_to_2024-Sep-12_266.5_32.5"}, "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": 2024090000195}, "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": "September 06 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 117711.34605261906}, "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": ["United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": 32.5}, "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": 266.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "266.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 265.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 33.65], [-92.0, 33.75], [-91.47, 33.53], [-91.32, 33.18], [-91.25, 33.15], [-91.0, 33.25], [-90.75, 33.15], [-90.5, 33.25], [-90.25, 33.15], [-90.0, 33.25], [-89.75, 33.15], [-89.5, 33.25], [-89.25, 33.15], [-89.0, 33.25], [-88.75, 33.15], [-88.5, 33.25], [-88.25, 33.15], [-88.0, 33.25], [-87.47, 33.03], [-87.25, 32.5], [-87.47, 31.97], [-87.82, 31.82], [-87.97, 31.47], [-88.5, 31.25], [-88.75, 31.35], [-89.0, 31.25], [-89.25, 31.35], [-89.5, 31.25], [-89.75, 31.35], [-90.0, 31.25], [-90.25, 31.35], [-90.5, 31.25], [-90.75, 31.35], [-91.0, 31.25], [-91.25, 31.35], [-91.32, 31.32], [-91.47, 30.97], [-92.0, 30.75], [-92.25, 30.85], [-92.32, 30.82], [-92.47, 30.47], [-93.0, 30.25], [-93.25, 30.35], [-93.5, 30.25], [-93.75, 30.35], [-94.0, 30.25], [-94.25, 30.35], [-94.5, 30.25], [-95.03, 30.47], [-95.25, 31.0], [-95.15, 31.25], [-95.18, 31.32], [-95.53, 31.47], [-95.75, 32.0], [-95.53, 32.53], [-95.18, 32.68], [-95.03, 33.03], [-94.62, 33.2], [-94.75, 33.5], [-94.53, 34.03], [-94.0, 34.25], [-93.75, 34.15], [-93.5, 34.25], [-93.25, 34.15], [-93.0, 34.25], [-92.47, 34.03], [-92.32, 33.68], [-92.25, 33.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-93.52999999999997, 33.53], [-93.0, 33.75], [-92.75, 33.65], [-92.5, 33.75], [-92.25, 33.65], [-92.0, 33.75], [-91.47000000000003, 33.53], [-91.30000000000001, 33.12], [-91.0, 33.25], [-90.75, 33.15], [-90.5, 33.25], [-90.25, 33.15], [-90.0, 33.25], [-89.75, 33.15], [-89.5, 33.25], [-89.25, 33.15], [-89.0, 33.25], [-88.75, 33.15], [-88.5, 33.25], [-88.25, 33.15], [-88.0, 33.25], [-87.47000000000003, 33.03], [-87.25, 32.5], [-87.47000000000003, 31.97], [-87.82, 31.82], [-87.97000000000003, 31.47], [-88.5, 31.25], [-88.75, 31.35], [-89.0, 31.25], [-89.25, 31.35], [-89.5, 31.25], [-89.75, 31.35], [-90.0, 31.25], [-90.25, 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