{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:21:38.540415", "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-Jul-18_to_2022-Jul-21_90.0_49.0"}, "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": 2022070000824}, "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": "July 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 21 2022"}, "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": 73959.02392016987}, "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", "Russian Federation"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia", "Asia", "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": 49.0}, "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": 90.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 87.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 93.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[87.47, 49.53], [87.82, 49.68], [87.85, 49.75], [87.75, 50.0], [87.97, 50.53], [88.5, 50.75], [88.75, 50.65], [88.82, 50.68], 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"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": {"2022-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.0, 47.75], [86.47, 47.97], [86.25, 48.5], [86.47, 49.03], [87.0, 49.25], [87.25, 49.15], [87.32, 49.18], [87.47, 49.53], [87.82, 49.68], [87.85, 49.75], [87.75, 50.0], [87.97, 50.53], [88.5, 50.75], [88.75, 50.65], [88.82, 50.68], [88.97, 51.03], [89.32, 51.18], [89.47, 51.53], [90.0, 51.75], [90.5, 51.54], [91.0, 51.75], [91.25, 51.65], [91.5, 51.75], [91.75, 51.65], [92.0, 51.75], [92.25, 51.65], [92.5, 51.75], [92.75, 51.65], [93.0, 51.75], [93.25, 51.65], [93.5, 51.75], [94.03, 51.53], [94.25, 51.0], [94.03, 50.47], [93.5, 50.25], [93.25, 50.35], [93.0, 50.25], [92.75, 50.35], [92.5, 50.25], [92.25, 50.35], [92.18, 50.32], [92.15, 50.25], [92.25, 50.0], [92.03, 49.47], [91.5, 49.25], [91.25, 49.35], 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{"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8971763169002243, -4.758437148562107, -4.563237577208964, -3.6571581183060573]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.839069321174804, -5.648006921284605, -6.913008715329738, -4.4826431067759245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4115059501067837, -1.697745917489732, -1.6283215183755928, -1.3149306821336069]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.710953094660633, -2.0151405984199653, -2.2717975784843767, -1.4912871535422096]}}