{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:12.088253", "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-Aug-12_to_2022-Aug-14_103.5_62.5"}, "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": 2022080000577}, "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": "August 12 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 14 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": 81541.515830271}, "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": 62.5}, "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": 103.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "103.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 102.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 108.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 60.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 63.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[101.47, 62.53], [101.82, 62.68], [101.85, 62.75], [101.75, 63.0], [101.97, 63.53], [102.32, 63.68], [102.47, 64.03], 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"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": {"2022-08-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.47, 61.47], [101.25, 62.0], [101.47, 62.53], [101.82, 62.68], [101.85, 62.75], [101.75, 63.0], [101.97, 63.53], [102.32, 63.68], [102.47, 64.03], [103.0, 64.25], [103.25, 64.15], [103.5, 64.25], [103.75, 64.15], [104.0, 64.25], [104.25, 64.15], [104.5, 64.25], [105.03, 64.03], [105.25, 63.5], [105.15, 63.25], [105.18, 63.18], [105.25, 63.15], [105.5, 63.25], [105.75, 63.15], [106.0, 63.25], [106.25, 63.15], [106.5, 63.25], [106.75, 63.15], [107.0, 63.25], [107.25, 63.15], [107.5, 63.25], [107.75, 63.15], [108.0, 63.25], [108.53, 63.03], [108.75, 62.5], [108.53, 61.97], [108.18, 61.82], [108.03, 61.47], [107.5, 61.25], [107.25, 61.35], [107.18, 61.32], [107.03, 60.97], [106.68, 60.82], [106.65, 60.75], [106.75, 60.5], [106.53, 59.97], [106.0, 59.75], [105.75, 59.85], [105.5, 59.75], [105.25, 59.85], [105.18, 59.82], [105.03, 59.47], [104.5, 59.25], [103.97, 59.47], [103.82, 59.82], [103.75, 59.85], [103.5, 59.75], [103.25, 59.85], [103.0, 59.75], [102.47, 59.97], [102.25, 60.5], [102.38, 60.8], [101.97, 60.97], [101.82, 61.32], [101.47, 61.47]]]]}, "2022-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[101.47, 61.47], [101.25, 62.0], [101.47, 62.53], [101.82, 62.68], [101.85, 62.75], [101.75, 63.0], [101.97, 63.53], [102.32, 63.68], [102.47, 64.03], [103.0, 64.25], [103.25, 64.15], [103.5, 64.25], [103.75, 64.15], [104.0, 64.25], [104.25, 64.15], [104.5, 64.25], [105.03, 64.03], [105.25, 63.5], [105.15, 63.25], [105.18, 63.18], [105.25, 63.15], [105.5, 63.25], [105.75, 63.15], [106.0, 63.25], [106.25, 63.15], [106.5, 63.25], [106.75, 63.15], [107.0, 63.25], [107.25, 63.15], [107.5, 63.25], [107.75, 63.15], [108.0, 63.25], [108.53, 63.03], [108.75, 62.5], 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"The daily evolution of mean t2m.", "value": [9.794840675316266, 8.780139838668106, 9.625438642956908]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [7.93241859888218, 7.158300639240167, 8.450333817432693]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.834643961934252, -5.744305247377869, -4.783519334673533]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.466157865328853, -6.830505033847658, -5.963671233170544]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4774751759285938, -1.8181504785170166, -1.5647137792928396]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9487662295359693, -2.1154296402313166, -1.9744245892149372]}}