{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:19.022953", "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-Mar-09_to_2019-Mar-12_12.5_64.0"}, "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": 2019030000303}, "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 09 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 12 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": 79359.1182110229}, "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": ["Norway", "Sweden"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": 64.0}, "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": 12.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "12.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 17.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-03-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[12.5, 64.75], [13.03, 64.53], [13.25, 64.0], [13.03, 63.47], [12.5, 63.25], [11.97, 63.47], [11.75, 64.0], [11.97, 64.53], [12.5, 64.75]]]]}, "2019-03-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 64.03], [11.82, 64.18], [11.85, 64.25], [11.75, 64.5], [11.97, 65.03], [12.32, 65.18], [12.47, 65.53], [13.0, 65.75], [13.53, 65.53], [13.68, 65.18], [13.75, 65.15], [14.0, 65.25], [14.53, 65.03], [14.75, 64.5], [14.65, 64.25], [14.68, 64.18], [15.03, 64.03], [15.18, 63.68], [15.53, 63.53], [15.75, 63.0], [15.65, 62.75], [15.75, 62.5], [15.65, 62.25], [15.75, 62.0], [15.63, 61.7], [16.03, 61.53], [16.18, 61.18], [16.5, 61.04], [17.0, 61.25], [17.53, 61.03], [17.75, 60.5], [17.53, 59.97], [17.18, 59.82], [17.03, 59.47], [16.5, 59.25], [16.25, 59.35], [16.0, 59.25], [15.75, 59.35], [15.5, 59.25], [15.25, 59.35], [15.0, 59.25], [14.75, 59.35], [14.5, 59.25], [14.25, 59.35], [14.0, 59.25], [13.75, 59.35], [13.5, 59.25], [12.97, 59.47], [12.75, 60.0], [12.85, 60.25], [12.75, 60.5], [12.85, 60.75], [12.75, 61.0], [12.85, 61.25], [12.82, 61.32], [12.47, 61.47], [12.32, 61.82], [11.97, 61.97], [11.82, 62.32], [11.47, 62.47], [11.25, 63.0], [11.35, 63.25], [11.25, 63.5], [11.47, 64.03]]]]}, "2019-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 64.03], [11.82, 64.18], [11.85, 64.25], [11.75, 64.5], [11.97, 65.03], [12.32, 65.18], [12.47, 65.53], [13.0, 65.75], [13.53, 65.53], [13.68, 65.18], [13.75, 65.15], [14.0, 65.25], [14.53, 65.03], [14.75, 64.5], [14.65, 64.25], [14.68, 64.18], [15.03, 64.03], [15.18, 63.68], [15.53, 63.53], [15.75, 63.0], [15.65, 62.75], [15.75, 62.5], [15.65, 62.25], [15.75, 62.0], [15.63, 61.7], [16.03, 61.53], [16.18, 61.18], [16.5, 61.04], [17.0, 61.25], [17.53, 61.03], [17.75, 60.5], [17.53, 59.97], [17.18, 59.82], [17.03, 59.47], [16.5, 59.25], [16.25, 59.35], [16.0, 59.25], [15.75, 59.35], [15.5, 59.25], [15.25, 59.35], [15.0, 59.25], [14.75, 59.35], [14.5, 59.25], [14.25, 59.35], [14.0, 59.25], [13.75, 59.35], [13.5, 59.25], [12.97, 59.47], [12.75, 60.0], [12.85, 60.25], [12.75, 60.5], [12.85, 60.75], [12.75, 61.0], [12.85, 61.25], [12.82, 61.32], [12.47, 61.47], [12.32, 61.82], [11.97, 61.97], [11.82, 62.32], [11.47, 62.47], [11.25, 63.0], [11.35, 63.25], [11.25, 63.5], [11.47, 64.03]]]]}, "2019-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.47, 64.03], [11.82, 64.18], [11.85, 64.25], [11.75, 64.5], [11.97, 65.03], [12.32, 65.18], [12.47, 65.53], [13.0, 65.75], [13.53, 65.53], [13.68, 65.18], [13.75, 65.15], [14.0, 65.25], [14.53, 65.03], [14.75, 64.5], [14.65, 64.25], [14.68, 64.18], [15.03, 64.03], [15.18, 63.68], [15.53, 63.53], [15.75, 63.0], [15.65, 62.75], [15.75, 62.5], [15.65, 62.25], [15.75, 62.0], [15.63, 61.7], [16.03, 61.53], [16.18, 61.18], [16.5, 61.04], [17.0, 61.25], [17.53, 61.03], [17.75, 60.5], [17.53, 59.97], [17.18, 59.82], [17.03, 59.47], [16.5, 59.25], [16.25, 59.35], [16.0, 59.25], [15.75, 59.35], [15.5, 59.25], [15.25, 59.35], [15.0, 59.25], [14.75, 59.35], [14.5, 59.25], 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