{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:01:18.343316", "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": "2024-Oct-10_to_2024-Oct-13_93.5_61.0"}, "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": 2024100000238}, "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 10 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 13 2024"}, "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": 87806.4454336022}, "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": ["Russian Federation"]}, "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": 61.0}, "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": 93.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "93.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 87.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 95.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[87.5, 61.75], [87.75, 61.65], [87.82, 61.68], [87.97, 62.03], [88.32, 62.18], [88.47, 62.53], [89.0, 62.75], [89.25, 62.65], 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"description": "List of all IPCC regions affected", "value": ["W.Siberia", "E.Siberia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-10-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[86.97, 60.47], [86.75, 61.0], [86.97, 61.53], [87.5, 61.75], [87.75, 61.65], [87.82, 61.68], [87.97, 62.03], [88.32, 62.18], [88.47, 62.53], [89.0, 62.75], [89.25, 62.65], [89.5, 62.75], [90.03, 62.53], [90.18, 62.18], [90.5, 62.04], [91.0, 62.25], [91.53, 62.03], [91.68, 61.68], [91.75, 61.65], [92.0, 61.75], [92.25, 61.65], [92.5, 61.75], [92.75, 61.65], [93.0, 61.75], [93.25, 61.65], [93.5, 61.75], [93.75, 61.65], [94.0, 61.75], [94.53, 61.53], [94.75, 61.0], [94.65, 60.75], [94.75, 60.5], [94.65, 60.25], [94.75, 60.0], [94.53, 59.47], [94.0, 59.25], [93.75, 59.35], [93.68, 59.32], [93.53, 58.97], [93.0, 58.75], [92.75, 58.85], [92.5, 58.75], [92.25, 58.85], [92.0, 58.75], [91.47, 58.97], 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entire duration", "value": -6.542270824485835}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-6.283482869466127, -7.581896286449194, -8.629941653109086, -7.464851725542985]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.47270812988279, -11.74175109863279, -12.310488128662087, -10.056988143920876]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.435710103366778, -6.653789875412842, -7.538430105597706, -6.172216853865591]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.3132327933197985, -10.356746716044029, -10.728006784237664, -7.574707483733562]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.39717410805587, -1.6648623237446145, -1.8407513133887634, -1.451285629813825]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6006988929751151, -2.6622128146272823, -2.7060734173768477, -1.7828659235708226]}}