{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:43.727162", "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-May-09_to_2024-May-11_138.0_59.5"}, "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": 2024050000280}, "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": "May 09 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 11 2024"}, "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": 55887.41927737933}, "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": 59.5}, "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": 138.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "138.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 134.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 139.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[133.75, 61.5], [133.97, 62.03], [134.5, 62.25], [134.75, 62.15], [135.0, 62.25], [135.25, 62.15], [135.5, 62.25], [136.03, 62.03], [136.18, 61.68], [136.53, 61.53], [136.68, 61.18], [136.75, 61.15], [137.0, 61.25], [137.25, 61.15], [137.5, 61.25], [138.03, 61.03], [138.18, 60.68], [138.25, 60.65], [138.5, 60.75], [138.75, 60.65], [139.0, 60.75], [139.53, 60.53], [139.75, 60.0], [139.53, 59.47], [139.18, 59.32], [139.15, 59.25], [139.25, 59.0], [139.03, 58.47], [138.5, 58.25], [138.25, 58.35], [138.18, 58.32], [138.03, 57.97], [137.68, 57.82], [137.53, 57.47], [137.18, 57.32], [137.03, 56.97], [136.5, 56.75], [135.97, 56.97], [135.75, 57.5], [135.88, 57.8], [135.47, 57.97], [135.25, 58.5], [135.47, 59.03], [135.82, 59.18], [135.85, 59.25], [135.82, 59.32], [135.47, 59.47], [135.32, 59.82], [135.25, 59.85], [135.0, 59.75], [134.75, 59.85], [134.5, 59.75], [133.97, 59.97], [133.75, 60.5], [133.85, 60.75], [133.75, 61.0], [133.85, 61.25], [133.75, 61.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.75, 61.0], [133.85, 61.25], [133.75, 61.5], [133.97, 62.03], [134.5, 62.25], [134.75, 62.15], [135.0, 62.25], [135.25, 62.15], [135.5, 62.25], [136.03, 62.03], [136.18, 61.68], [136.53, 61.53], [136.68, 61.18], [136.75, 61.15], [137.0, 61.25], [137.25, 61.15], [137.5, 61.25], [138.03, 61.03], [138.18, 60.68], [138.25, 60.65], [138.5, 60.75], [138.75, 60.65], [139.0, 60.75], [139.53, 60.53], [139.75, 60.0], [139.53, 59.47], [139.18, 59.32], [139.15, 59.25], [139.25, 59.0], [139.03, 58.47], [138.5, 58.25], [138.25, 58.35], [138.18, 58.32], [138.03, 57.97], [137.68, 57.82], [137.53, 57.47], [137.18, 57.32], [137.03, 56.97], [136.5, 56.75], [135.97, 56.97], [135.75, 57.5], [135.88, 57.8], [135.47, 57.97], [135.25, 58.5], [135.47, 59.03], [135.82, 59.18], [135.85, 59.25], [135.82, 59.32], [135.47, 59.47], [135.32, 59.82], [135.25, 59.85], [135.0, 59.75], [134.75, 59.85], [134.5, 59.75], [133.97, 59.97], [133.75, 60.5], [133.85, 60.75], [133.75, 61.0]]]]}, "2024-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.75, 61.0], [133.85, 61.25], [133.75, 61.5], [133.97, 62.03], [134.5, 62.25], [134.75, 62.15], [135.0, 62.25], [135.25, 62.15], [135.5, 62.25], [136.03, 62.03], [136.18, 61.68], [136.53, 61.53], [136.68, 61.18], [136.75, 61.15], [137.0, 61.25], [137.25, 61.15], [137.5, 61.25], [138.03, 61.03], [138.18, 60.68], [138.25, 60.65], [138.5, 60.75], [138.75, 60.65], [139.0, 60.75], [139.53, 60.53], [139.75, 60.0], [139.53, 59.47], [139.18, 59.32], [139.15, 59.25], [139.25, 59.0], [139.03, 58.47], [138.5, 58.25], [138.25, 58.35], [138.18, 58.32], [138.03, 57.97], [137.68, 57.82], [137.53, 57.47], [137.18, 57.32], [137.03, 56.97], [136.5, 56.75], [135.97, 56.97], [135.75, 57.5], [135.88, 57.8], [135.47, 57.97], [135.25, 58.5], [135.47, 59.03], 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evolution of mean t2m anomalies.", "value": [-4.7753109617741085, -4.743658615356114, -4.664608914200468]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.979098064272705, -6.144236955387953, -5.941553686884106]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6570566593575695, -1.6127926879124304, -1.554000732096118]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.10555899817047, -1.9449213281535436, -1.9496775437534546]}}