{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:11.050076", "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": "2020-Nov-01_to_2020-Nov-04_105.0_27.0"}, "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": 2020110000081}, "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": "November 01 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 04 2020"}, "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": 66869.61135778908}, "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"]}, "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": 27.0}, "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": 105.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "105.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 106.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[103.823, 25.677], [103.854, 25.75], [103.75, 26.0], [103.854, 26.25], [103.75, 26.5], [103.854, 26.75], [103.75, 27.0], [103.97, 27.53], [104.5, 27.75], [104.75, 27.646], [105.0, 27.75], [105.25, 27.646], [105.5, 27.75], [106.03, 27.53], [106.177, 27.177], [106.53, 27.03], [106.677, 26.677], [107.03, 26.53], [107.25, 26.0], [107.03, 25.47], [106.5, 25.25], [106.25, 25.354], [106.177, 25.323], [106.146, 25.25], [106.25, 25.0], [106.146, 24.75], [106.25, 24.5], [106.146, 24.25], [106.25, 24.0], [106.03, 23.47], [105.5, 23.25], [104.97, 23.47], [104.823, 23.823], [104.75, 23.854], [104.5, 23.75], [104.25, 23.854], [104.0, 23.75], [103.47, 23.97], [103.25, 24.5], [103.354, 24.75], [103.25, 25.0], [103.47, 25.53], [103.823, 25.677]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-11-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[104.75, 26.353553390593273], [104.5, 26.25], 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