{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:21:38.615375", "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-Oct-01_to_2020-Oct-03_96.5_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": 2020100000090}, "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": "October 01 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 2020"}, "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": 110514.8662468593}, "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": ["Mongolia", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 96.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "96.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 91.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 97.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 50.53], [91.38, 50.7], [91.25, 51.0], [91.47, 51.53], 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[95.93, 50.57], [95.82, 50.82]]]]}, "2020-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 50.53], [91.38, 50.7], [91.25, 51.0], [91.47, 51.53], [92.0, 51.75], [92.3, 51.63], [92.46, 52.0], [92.25, 52.5], [92.47, 53.03], [93.0, 53.25], [93.25, 53.15], [93.5, 53.25], [94.0, 53.04], [94.5, 53.25], [95.03, 53.03], [95.18, 52.68], [95.25, 52.65], [95.5, 52.75], [96.03, 52.53], [96.18, 52.18], [96.25, 52.15], [96.5, 52.25], [96.75, 52.15], [97.0, 52.25], [97.53, 52.03], [97.75, 51.5], [97.53, 50.97], [97.18, 50.82], [97.03, 50.47], [96.5, 50.25], [96.07, 50.43], [96.25, 50.0], [96.15, 49.75], [96.25, 49.5], [96.03, 48.97], [95.5, 48.75], [95.25, 48.85], [95.18, 48.82], [95.13, 48.7], [95.53, 48.53], [95.75, 48.0], [95.53, 47.47], [95.0, 47.25], [94.75, 47.35], [94.5, 47.25], [94.25, 47.35], [94.0, 47.25], [93.47, 47.47], [93.3, 47.88], [93.18, 47.82], [93.03, 47.47], [92.5, 47.25], [91.97, 47.47], [91.75, 48.0], [91.85, 48.25], [91.82, 48.32], [91.47, 48.47], [91.32, 48.82], [90.97, 48.97], [90.75, 49.5], [90.85, 49.75], [90.75, 50.0], [90.97, 50.53]], [[95.82, 50.82], [95.75, 50.85], [95.68, 50.82], [95.65, 50.75], [95.68, 50.68], [95.93, 50.57], [95.82, 50.82]]]]}, "2020-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 50.53], [91.38, 50.7], [91.25, 51.0], [91.47, 51.53], [92.0, 51.75], [92.3, 51.63], [92.46, 52.0], [92.25, 52.5], [92.47, 53.03], [93.0, 53.25], [93.25, 53.15], [93.5, 53.25], [94.0, 53.04], [94.5, 53.25], [95.03, 53.03], [95.18, 52.68], [95.25, 52.65], [95.5, 52.75], [96.03, 52.53], [96.18, 52.18], [96.25, 52.15], [96.5, 52.25], [96.75, 52.15], [97.0, 52.25], [97.53, 52.03], [97.75, 51.5], [97.53, 50.97], [97.18, 50.82], [97.03, 50.47], [96.5, 50.25], [96.07, 50.43], [96.25, 50.0], [96.15, 49.75], [96.25, 49.5], [96.03, 48.97], [95.5, 48.75], [95.25, 48.85], [95.18, 48.82], [95.13, 48.7], [95.53, 48.53], [95.75, 48.0], [95.53, 47.47], [95.0, 47.25], [94.75, 47.35], [94.5, 47.25], [94.25, 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