{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:53.099006", "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-19_to_2019-Jun-22_238.5_59.5"}, "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": 2019060000615}, "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 19 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 22 2019"}, "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": 66116.74165454844}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.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": []}, "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": 59.5}, "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": 238.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "238.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 237.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 241.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 56.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.53, 60.03], [-122.18, 60.18], [-122.03, 60.53], 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[-121.0, 61.25], [-120.75, 61.15], [-120.5, 61.25], [-119.97, 61.03], [-119.75, 60.5], [-119.85, 60.25], [-119.82, 60.18], [-119.47, 60.03], [-119.32, 59.68], [-119.25, 59.65], [-119.0, 59.75], [-118.75, 59.65], [-118.5, 59.75], [-117.97, 59.53], [-117.75, 59.0], [-117.85, 58.75], [-117.75, 58.5], [-117.85, 58.25], [-117.75, 58.0], [-117.97, 57.47], [-118.32, 57.32], [-118.47, 56.97], [-118.82, 56.82], [-118.97, 56.47], [-119.5, 56.25], [-119.75, 56.35], [-120.0, 56.25], [-120.25, 56.35], [-120.5, 56.25], [-120.75, 56.35], [-121.0, 56.25], [-121.25, 56.35], [-121.5, 56.25], [-122.03, 56.47], [-122.25, 57.0], [-122.03, 57.53], [-121.68, 57.68], [-121.65, 57.75], [-121.68, 57.82], [-122.03, 57.97], [-122.18, 58.32], [-122.53, 58.47], [-122.75, 59.0], [-122.65, 59.25], [-122.75, 59.5], [-122.53, 60.03]]]]}, "2019-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-122.75, 59.5], [-122.53, 60.03], [-122.0, 60.25], [-121.75, 60.15], [-121.5, 60.25], [-121.25, 60.15], 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