{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:52.647276", "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-Jun-24_to_2023-Jun-27_90.5_50.5"}, "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": 2023060000900}, "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 24 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 27 2023"}, "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": 50850.299212044934}, "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": 50.5}, "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": 90.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "90.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 88.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.0}, "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": [[[[88.82, 49.18], [88.96, 49.5], [88.75, 50.0], [88.85, 50.25], [88.75, 50.5], [88.97, 51.03], [89.32, 51.18], [89.47, 51.53], [90.0, 51.75], [90.25, 51.65], [90.5, 51.75], [91.03, 51.53], [91.25, 51.0], [91.15, 50.75], [91.25, 50.5], [91.03, 49.97], [90.68, 49.82], [90.65, 49.75], [90.75, 49.5], [90.65, 49.25], [90.68, 49.18], [91.03, 49.03], [91.25, 48.5], [91.15, 48.25], [91.25, 48.0], [91.15, 47.75], [91.18, 47.68], [91.53, 47.53], [91.75, 47.0], [91.53, 46.47], [91.0, 46.25], [90.47, 46.47], [90.32, 46.82], [90.25, 46.85], [90.0, 46.75], [89.75, 46.85], [89.5, 46.75], [88.97, 46.97], [88.82, 47.32], [88.75, 47.35], [88.5, 47.25], [88.25, 47.35], [88.0, 47.25], [87.47, 47.47], [87.25, 48.0], [87.47, 48.53], [87.82, 48.68], [87.97, 49.03], [88.5, 49.25], [88.75, 49.15], [88.82, 49.18]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "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": {"2023-06-24T11:30:00.000000000": {"type": "MultiPolygon", 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"description": "Mean t2m anomaly over entire duration", "value": -4.938046563035433}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.370642107121739, 5.325671383654594, 5.4514229259334, 5.1946700833786394]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.0656372484478993, 1.5418091160086078, 0.43176893739195066, 5.1946700833786394]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.202501017191958, -5.3372246117819735, -5.312431198414197, -3.987618105989725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.3087163895940535, -6.5441472326290295, -8.675679600832837, -3.987618105989725]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5524878346680646, -2.0063747833904353, -2.0197797043816257, -1.4065361312297804]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.962294904229314, -2.5021053817670897, -2.9914148864453765, -1.4065361312297804]}}