{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:51.764934", "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": "2023-Aug-21_to_2023-Aug-23_107.5_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": 2023080000588}, "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 21 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 2023"}, "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": 84460.98324443909}, "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": 107.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "107.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 106.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[105.47, 46.53], [105.82, 46.68], [105.97, 47.03], [106.32, 47.18], [106.35, 47.25], [106.25, 47.5], [106.35, 47.75], 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of all IPCC regions affected", "value": ["E.Siberia", "E.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[105.47, 45.47], [105.25, 46.0], [105.47, 46.53], [105.82, 46.68], [105.97, 47.03], [106.32, 47.18], [106.35, 47.25], [106.25, 47.5], [106.35, 47.75], [106.25, 48.0], [106.35, 48.25], [106.25, 48.5], [106.47, 49.03], [106.82, 49.18], [106.97, 49.53], [107.5, 49.75], [107.75, 49.65], [108.0, 49.75], [108.25, 49.65], [108.5, 49.75], [109.03, 49.53], [109.18, 49.18], [109.53, 49.03], [109.68, 48.68], [110.03, 48.53], [110.25, 48.0], [110.03, 47.47], [109.5, 47.25], [109.25, 47.35], [109.18, 47.32], [109.15, 47.25], [109.25, 47.0], [109.15, 46.75], [109.25, 46.5], [109.15, 46.25], [109.25, 46.0], [109.15, 45.75], [109.18, 45.68], [109.53, 45.53], [109.68, 45.18], [109.75, 45.15], [110.0, 45.25], [110.53, 45.03], 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[11.684398315095223, 11.35768635155847, 11.819449372829752]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.7314117396094275, 6.351115570232253, 7.224042051299364]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.881511726856782, -5.073630352986044, -4.495699111730792]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.865462898230305, -5.757948110859502, -5.4405636168119145]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4376905551358867, -1.517286258269944, -1.3631840551788292]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7799170777738555, -1.7335786715036305, -1.5342214899648865]}}