{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:48.672991", "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": "2018-Aug-31_to_2018-Sep-02_72.0_51.5"}, "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": 2018080001204}, "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 31 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 02 2018"}, "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": 61015.419584071526}, "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": ["Kazakhstan", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Siberia"]}, "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": 51.5}, "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": 72.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "72.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 71.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 77.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 51.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 55.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.85, 52.75], [70.75, 53.0], [70.97, 53.53], [71.32, 53.68], 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54.25], [73.25, 54.15], [73.5, 54.25], [73.75, 54.15], [73.82, 54.18], [73.97, 54.53], [74.5, 54.75], [74.75, 54.65], [75.0, 54.75], [75.25, 54.65], [75.32, 54.68], [75.47, 55.03], [76.0, 55.25], [76.25, 55.15], [76.32, 55.18], [76.47, 55.53], [77.0, 55.75], [77.53, 55.53], [77.75, 55.0], [77.65, 54.75], [77.75, 54.5], [77.53, 53.97], [77.18, 53.82], [77.03, 53.47], [76.68, 53.32], [76.53, 52.97], [76.0, 52.75], [75.75, 52.85], [75.5, 52.75], [75.25, 52.85], [75.18, 52.82], [75.03, 52.47], [74.68, 52.32], [74.53, 51.97], [74.0, 51.75], [73.5, 51.96], [73.18, 51.82], [73.03, 51.47], [72.68, 51.32], [72.53, 50.97], [72.0, 50.75], [71.47, 50.97], [71.32, 51.32], [70.97, 51.47], [70.75, 52.0], [70.85, 52.25], [70.75, 52.5], [70.85, 52.75]]]]}, "2018-09-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[70.85, 52.75], [70.75, 53.0], [70.97, 53.53], [71.32, 53.68], [71.47, 54.03], [72.0, 54.25], [72.5, 54.04], [73.0, 54.25], [73.25, 54.15], [73.5, 54.25], [73.75, 54.15], 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{"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.467128408758242, 7.486128389422049, 8.827784720996249]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.762794936010721, 5.722984828846791, 7.936754245274983]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.0708217048572495, -7.7054204158549044, -6.1326809782837275]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.384731375390629, -9.026528560473082, -7.18261786432879]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.362199889452953, -1.7365582040147511, -1.4028410126754771]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.444292850387494, -1.8937166893636501, -1.6358085829123297]}}