{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:06.034328", "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-Jun-20_to_2024-Jun-23_108.0_44.5"}, "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": 2024060000502}, "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": "June 20 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 23 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": 110835.1038354756}, "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": ["China", "Mongolia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.C.Asia"]}, "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": 44.5}, "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": 108.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "108.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 105.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 111.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 40.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 44.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.5, 41.75], [107.03, 41.53], [107.25, 41.0], [107.03, 40.47], [106.5, 40.25], [105.97, 40.47], [105.75, 41.0], [105.97, 41.53], [106.5, 41.75]]]]}, "2024-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.5, 43.75], [106.75, 43.65], [106.82, 43.68], [106.97, 44.03], [107.32, 44.18], [107.35, 44.25], [107.25, 44.5], [107.47, 45.03], [108.0, 45.25], [108.25, 45.15], [108.5, 45.25], [108.75, 45.15], [109.0, 45.25], [109.53, 45.03], [109.68, 44.68], [109.75, 44.65], [110.0, 44.75], [110.25, 44.65], [110.5, 44.75], [111.03, 44.53], [111.18, 44.18], [111.25, 44.15], [111.5, 44.25], [112.03, 44.03], [112.25, 43.5], [112.15, 43.25], [112.25, 43.0], [112.03, 42.47], [111.5, 42.25], [111.25, 42.35], [111.18, 42.32], [111.03, 41.97], [110.68, 41.82], [110.53, 41.47], [110.0, 41.25], [109.75, 41.35], [109.5, 41.25], [109.25, 41.35], [109.0, 41.25], [108.75, 41.35], [108.5, 41.25], [108.25, 41.35], [108.0, 41.25], [107.75, 41.35], [107.68, 41.32], [107.53, 40.97], [107.18, 40.82], [107.03, 40.47], [106.5, 40.25], [105.97, 40.47], [105.75, 41.0], [105.85, 41.25], [105.75, 41.5], [105.88, 41.8], [105.47, 41.97], [105.25, 42.5], [105.47, 43.03], [105.82, 43.18], [105.97, 43.53], [106.5, 43.75]]]]}, "2024-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.5, 43.75], [106.75, 43.65], [106.82, 43.68], [106.97, 44.03], [107.32, 44.18], [107.35, 44.25], [107.25, 44.5], [107.47, 45.03], [108.0, 45.25], [108.25, 45.15], [108.5, 45.25], [108.75, 45.15], [109.0, 45.25], [109.53, 45.03], [109.68, 44.68], [109.75, 44.65], [110.0, 44.75], [110.25, 44.65], [110.5, 44.75], [111.03, 44.53], [111.18, 44.18], [111.25, 44.15], [111.5, 44.25], [112.03, 44.03], [112.25, 43.5], [112.15, 43.25], [112.25, 43.0], [112.03, 42.47], [111.5, 42.25], [111.25, 42.35], [111.18, 42.32], [111.03, 41.97], [110.68, 41.82], [110.53, 41.47], [110.0, 41.25], [109.75, 41.35], [109.5, 41.25], [109.25, 41.35], [109.0, 41.25], [108.75, 41.35], [108.5, 41.25], [108.25, 41.35], [108.0, 41.25], [107.75, 41.35], [107.68, 41.32], [107.53, 40.97], [107.18, 40.82], [107.03, 40.47], [106.5, 40.25], [105.97, 40.47], [105.75, 41.0], [105.85, 41.25], [105.75, 41.5], [105.88, 41.8], [105.47, 41.97], [105.25, 42.5], [105.47, 43.03], [105.82, 43.18], [105.97, 43.53], [106.5, 43.75]]]]}, "2024-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.5, 43.75], [106.75, 43.65], [106.82, 43.68], [106.97, 44.03], [107.32, 44.18], [107.35, 44.25], [107.25, 44.5], [107.47, 45.03], [108.0, 45.25], [108.25, 45.15], [108.5, 45.25], [108.75, 45.15], [109.0, 45.25], [109.53, 45.03], [109.68, 44.68], [109.75, 44.65], [110.0, 44.75], [110.25, 44.65], [110.5, 44.75], [111.03, 44.53], [111.18, 44.18], [111.25, 44.15], [111.5, 44.25], [112.03, 44.03], [112.25, 43.5], [112.15, 43.25], [112.25, 43.0], [112.03, 42.47], [111.5, 42.25], [111.25, 42.35], [111.18, 42.32], [111.03, 41.97], [110.68, 41.82], [110.53, 41.47], [110.0, 41.25], [109.75, 41.35], [109.5, 41.25], [109.25, 41.35], [109.0, 41.25], [108.75, 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13.806721788832817]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.4105832337136235, -6.5625221945516525, -7.187620596825689, -5.306425427370869]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.4105832337136235, -11.578287069365729, -9.830612527745814, -6.320808872948248]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4118626975928452, -1.8291832521671663, -2.060863746742635, -1.5304338266279405]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4118626975928452, -2.9147164070375324, -2.4737075293307993, -1.9121608632837603]}}