{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:30.102509", "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": "2022-Oct-07_to_2022-Oct-09_101.5_48.0"}, "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": 2022100000370}, "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 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 09 2022"}, "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": 58449.78206674803}, "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"]}, "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": 48.0}, "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": 101.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "101.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 100.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 105.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[100.5, 48.75], [100.75, 48.65], [100.82, 48.68], [100.97, 49.03], [101.5, 49.25], [101.75, 49.15], [102.0, 49.25], [102.25, 49.15], [102.5, 49.25], [103.03, 49.03], [103.18, 48.68], [103.25, 48.65], [103.5, 48.75], [104.03, 48.53], [104.18, 48.18], [104.53, 48.03], [104.68, 47.68], [104.75, 47.65], [105.0, 47.75], [105.53, 47.53], [105.75, 47.0], [105.65, 46.75], [105.75, 46.5], [105.53, 45.97], [105.0, 45.75], [104.75, 45.85], [104.5, 45.75], [103.97, 45.97], [103.82, 46.32], [103.75, 46.35], [103.5, 46.25], [103.25, 46.35], [103.0, 46.25], [102.75, 46.35], [102.5, 46.25], [102.25, 46.35], [102.0, 46.25], [101.75, 46.35], [101.5, 46.25], [100.97, 46.47], [100.82, 46.82], [100.75, 46.85], [100.5, 46.75], [99.97, 46.97], [99.75, 47.5], [99.85, 47.75], [99.75, 48.0], [99.97, 48.53], [100.5, 48.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 48.0], [99.97, 48.53], [100.5, 48.75], [100.75, 48.65], [100.82, 48.68], [100.97, 49.03], [101.5, 49.25], [101.75, 49.15], [102.0, 49.25], [102.25, 49.15], [102.5, 49.25], [103.03, 49.03], [103.18, 48.68], [103.25, 48.65], [103.5, 48.75], [104.03, 48.53], [104.18, 48.18], [104.53, 48.03], [104.68, 47.68], [104.75, 47.65], [105.0, 47.75], [105.53, 47.53], [105.75, 47.0], [105.65, 46.75], [105.75, 46.5], [105.53, 45.97], [105.0, 45.75], [104.75, 45.85], [104.5, 45.75], [103.97, 45.97], [103.82, 46.32], [103.75, 46.35], [103.5, 46.25], [103.25, 46.35], [103.0, 46.25], [102.75, 46.35], [102.5, 46.25], [102.25, 46.35], [102.0, 46.25], [101.75, 46.35], [101.5, 46.25], [100.97, 46.47], [100.82, 46.82], [100.75, 46.85], [100.5, 46.75], [99.97, 46.97], [99.75, 47.5], [99.85, 47.75], [99.75, 48.0]]]]}, "2022-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 48.0], [99.97, 48.53], [100.5, 48.75], [100.75, 48.65], [100.82, 48.68], [100.97, 49.03], [101.5, 49.25], [101.75, 49.15], [102.0, 49.25], [102.25, 49.15], [102.5, 49.25], [103.03, 49.03], [103.18, 48.68], [103.25, 48.65], [103.5, 48.75], [104.03, 48.53], [104.18, 48.18], [104.53, 48.03], [104.68, 47.68], [104.75, 47.65], [105.0, 47.75], [105.53, 47.53], [105.75, 47.0], [105.65, 46.75], [105.75, 46.5], [105.53, 45.97], [105.0, 45.75], [104.75, 45.85], [104.5, 45.75], [103.97, 45.97], [103.82, 46.32], [103.75, 46.35], [103.5, 46.25], [103.25, 46.35], [103.0, 46.25], [102.75, 46.35], [102.5, 46.25], [102.25, 46.35], [102.0, 46.25], [101.75, 46.35], [101.5, 46.25], [100.97, 46.47], [100.82, 46.82], [100.75, 46.85], [100.5, 46.75], [99.97, 46.97], [99.75, 47.5], [99.85, 47.75], [99.75, 48.0]]]]}, "2022-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[99.75, 48.0], [99.97, 48.53], [100.5, 48.75], [100.75, 48.65], [100.82, 48.68], [100.97, 49.03], [101.5, 49.25], [101.75, 49.15], [102.0, 49.25], [102.25, 49.15], [102.5, 49.25], 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of mean t2m.", "value": [-4.751719031328321, -11.400621201387139, -7.316825649539112]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.480170266851985, -17.4403059061124, -11.853811358996609]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.903508150713502, -14.075256897395192, -9.36663596791269]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.970694646122524, -18.549269497119155, -14.019320663425049]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.991528422817875, -3.4132731382275465, -2.185868411294879]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7366230665706395, -4.755833270277859, -3.274167061296215]}}