{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:10:18.166334", "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": "2018-Mar-01_to_2018-Mar-03_59.5_51.5"}, "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": 2018030000124}, "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 01 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 84621.70930235359}, "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": ["Kazakhstan", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Europe", "W.Siberia"]}, "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": 51.5}, "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": 59.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "59.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 56.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 63.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 50.5], [56.47, 51.03], [56.82, 51.18], [56.85, 51.25], 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51.35]], [[61.25, 51.15], [61.32, 51.18], [61.43, 51.43], [61.0, 51.25], [61.25, 51.15]]]]}, "2018-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[56.25, 50.5], [56.47, 51.03], [56.82, 51.18], [56.85, 51.25], [56.75, 51.5], [56.97, 52.03], [57.5, 52.25], [58.03, 52.03], [58.18, 51.68], [58.3, 51.63], [58.47, 52.03], [59.0, 52.25], [59.25, 52.15], [59.5, 52.25], [59.75, 52.15], [59.82, 52.18], [59.97, 52.53], [60.5, 52.75], [60.75, 52.65], [61.0, 52.75], [61.53, 52.53], [61.75, 52.0], [61.57, 51.57], [62.0, 51.75], [62.25, 51.65], [62.5, 51.75], [62.75, 51.65], [63.0, 51.75], [63.53, 51.53], [63.68, 51.18], [64.03, 51.03], [64.25, 50.5], [64.03, 49.97], [63.68, 49.82], [63.53, 49.47], [63.0, 49.25], [62.75, 49.35], [62.5, 49.25], [61.97, 49.47], [61.8, 49.88], [61.68, 49.82], [61.53, 49.47], [61.18, 49.32], [61.03, 48.97], [60.5, 48.75], [60.25, 48.85], [60.18, 48.82], [60.03, 48.47], [59.5, 48.25], [59.25, 48.35], [59.0, 48.25], [58.47, 48.47], [58.32, 48.82], 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"value": [-1.8788784885192926, -1.8098362913960178, -1.8694195777893272]}}