{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:21:00.248233", "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": "2019-Dec-02_to_2019-Dec-04_110.5_54.0"}, "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": 2019120000136}, "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": "December 02 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 04 2019"}, "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": 96814.05135976637}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 54.0}, "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": 110.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "110.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 109.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 53.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-12-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.25, 54.0], [109.47, 54.53], [109.82, 54.68], [109.85, 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52.75], [110.75, 52.85], [110.5, 52.75], [109.97, 52.97], [109.82, 53.32], [109.47, 53.47], [109.25, 54.0]]]]}, "2019-12-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[109.25, 54.0], [109.47, 54.53], [109.82, 54.68], [109.85, 54.75], [109.75, 55.0], [109.97, 55.53], [110.32, 55.68], [110.47, 56.03], [110.82, 56.18], [110.96, 56.5], [110.75, 57.0], [110.97, 57.53], [111.5, 57.75], [112.03, 57.53], [112.18, 57.18], [112.25, 57.15], [112.5, 57.25], [113.03, 57.03], [113.2, 56.63], [113.5, 56.75], [113.8, 56.63], [113.97, 57.03], [114.32, 57.18], [114.47, 57.53], [115.0, 57.75], [115.25, 57.65], [115.5, 57.75], [116.03, 57.53], [116.18, 57.18], [116.25, 57.15], [116.5, 57.25], [116.75, 57.15], [117.0, 57.25], [117.53, 57.03], [117.75, 56.5], [117.53, 55.97], [117.18, 55.82], [117.03, 55.47], [116.5, 55.25], [116.25, 55.35], [116.18, 55.32], [116.04, 55.0], [116.25, 54.5], [116.15, 54.25], [116.25, 54.0], [116.03, 53.47], [115.5, 53.25], [114.97, 53.47], [114.82, 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"value": [-35.46498285491404, -38.14984539435599, -36.903118691930786]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-41.307789236895246, -44.49940680857756, -41.425904321925856]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.913767727925308, -12.234446873036925, -10.830653692567067]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-12.597340808036705, -17.78507586547616, -16.69242323357048]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5426391370619406, -1.8903295672973361, -1.6862841399135151]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily 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