{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:53.535505", "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": "2019-Jun-23_to_2019-Jun-29_235.0_42.0"}, "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": 2019060000744}, "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": "June 23 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2019"}, "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": 53240.33179188574}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Pacific-Ocean", "W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["North Pacific Ocean"]}, "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": 42.0}, "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": 235.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "235.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 233.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 236.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-125.5, 41.25], [-124.97, 41.03], [-124.75, 40.5], [-124.97, 39.97], [-125.5, 39.75], [-126.03, 39.97], [-126.25, 40.5], [-126.03, 41.03], [-125.5, 41.25]]]]}, "2019-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.25, 41.0], [-126.03, 41.53], [-125.68, 41.68], [-125.65, 41.75], [-125.75, 42.0], [-125.54, 42.5], [-125.75, 43.0], [-125.53, 43.53], [-125.0, 43.75], [-124.47, 43.53], [-124.25, 43.0], [-124.46, 42.5], [-124.32, 42.18], [-123.97, 42.03], [-123.75, 41.5], [-123.85, 41.25], [-123.75, 41.0], [-123.97, 40.47], [-124.32, 40.32], [-124.47, 39.97], [-124.82, 39.82], [-124.97, 39.47], [-125.5, 39.25], [-125.75, 39.35], [-126.0, 39.25], [-126.53, 39.47], [-126.75, 40.0], [-126.53, 40.53], [-126.18, 40.68], [-126.15, 40.75], [-126.25, 41.0]]]]}, "2019-06-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.25, 41.0], [-126.03, 41.53], [-125.68, 41.68], [-125.65, 41.75], [-125.75, 42.0], [-125.54, 42.5], [-125.75, 43.0], [-125.53, 43.53], [-125.0, 43.75], [-124.47, 43.53], [-124.32, 43.18], [-123.97, 43.03], [-123.75, 42.5], [-123.85, 42.25], [-123.75, 42.0], [-123.85, 41.75], [-123.75, 41.5], [-123.85, 41.25], [-123.75, 41.0], [-123.85, 40.75], [-123.75, 40.5], [-123.97, 39.97], [-124.5, 39.75], [-124.75, 39.85], [-124.82, 39.82], [-124.97, 39.47], [-125.5, 39.25], [-125.75, 39.35], [-126.0, 39.25], [-126.53, 39.47], [-126.75, 40.0], [-126.53, 40.53], [-126.18, 40.68], [-126.15, 40.75], [-126.25, 41.0]]]]}, "2019-06-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-126.25, 41.0], [-126.03, 41.53], [-125.68, 41.68], [-125.65, 41.75], [-125.75, 42.0], [-125.54, 42.5], [-125.75, 43.0], [-125.53, 43.53], [-125.0, 43.75], [-124.75, 43.65], [-124.5, 43.75], [-124.25, 43.65], [-124.0, 43.75], [-123.47, 43.53], [-123.25, 43.0], [-123.35, 42.75], [-123.32, 42.68], [-122.97, 42.53], [-122.75, 42.0], [-122.85, 41.75], [-122.75, 41.5], [-122.85, 41.25], [-122.75, 41.0], [-122.97, 40.47], [-123.5, 40.25], [-123.75, 40.35], [-123.82, 40.32], [-123.97, 39.97], 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