{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:48.122738", "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-Mar-14_to_2024-Mar-17_75.0_41.5"}, "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": 2024030000370}, "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": "March 14 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 17 2024"}, "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": 64604.07481846574}, "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": ["China", "Kazakhstan", "Kyrgyzstan"]}, "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": 41.5}, "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": 75.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "75.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 74.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[74.75, 42.65], [75.0, 42.75], [75.25, 42.65], [75.5, 42.75], [75.75, 42.65], [76.0, 42.75], [76.53, 42.53], [76.68, 42.18], 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"E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.75, 42.0], [73.97, 42.53], [74.5, 42.75], [74.75, 42.65], [75.0, 42.75], [75.25, 42.65], [75.5, 42.75], [75.75, 42.65], [76.0, 42.75], [76.53, 42.53], [76.7, 42.13], [76.82, 42.18], [76.97, 42.53], [77.5, 42.75], [77.75, 42.65], [78.0, 42.75], [78.53, 42.53], [78.68, 42.18], [79.03, 42.03], [79.25, 41.5], [79.03, 40.97], [78.5, 40.75], [78.25, 40.85], [78.18, 40.82], [78.03, 40.47], [77.5, 40.25], [77.25, 40.35], [77.0, 40.25], [76.75, 40.35], [76.68, 40.32], [76.53, 39.97], [76.0, 39.75], [75.47, 39.97], [75.25, 40.5], [75.38, 40.8], [75.25, 40.85], [75.0, 40.75], [74.75, 40.85], [74.5, 40.75], [73.97, 40.97], [73.75, 41.5], [73.85, 41.75], [73.75, 42.0]]]]}, "2024-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[73.97, 42.53], [74.5, 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