{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:36.693321", "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": "2016-Jan-26_to_2016-Jan-29_48.5_40.0"}, "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": 2016010000674}, "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": "January 26 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2016"}, "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": 71846.46732717087}, "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": ["Azerbaijan", "Iran", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.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": 40.0}, "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": 48.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "48.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 46.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, 39.0], [48.35, 39.25], [48.25, 39.5], [48.35, 39.75], 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40.75], [48.75, 40.65], [49.0, 40.75], [49.25, 40.65], [49.5, 40.75], [49.75, 40.65], [50.0, 40.75], [50.53, 40.53], [50.75, 40.0], [50.53, 39.47], [50.18, 39.32], [50.15, 39.25], [50.18, 39.18], [50.53, 39.03], [50.75, 38.5], [50.65, 38.25], [50.75, 38.0], [50.53, 37.47], [50.18, 37.32], [50.03, 36.97], [49.5, 36.75], [49.25, 36.85], [49.0, 36.75], [48.75, 36.85], [48.5, 36.75], [48.25, 36.85], [48.0, 36.75], [47.47, 36.97], [47.25, 37.5], [47.46, 38.0], [47.25, 38.5], [47.38, 38.8], [46.97, 38.97], [46.75, 39.5], [46.85, 39.75], [46.82, 39.82], [46.75, 39.85], [46.5, 39.75], [45.97, 39.97], [45.75, 40.5], [45.96, 41.0], [45.75, 41.5], [45.97, 42.03]]]]}, "2016-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.97, 40.53], [47.5, 40.75], [47.75, 40.65], [48.0, 40.75], [48.25, 40.65], [48.5, 40.75], [49.03, 40.53], [49.25, 40.0], [49.15, 39.75], [49.25, 39.5], [49.04, 39.0], [49.25, 38.5], [49.15, 38.25], [49.18, 38.18], [49.53, 38.03], [49.75, 37.5], [49.53, 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"The daily evolution of mean t2m anomalies.", "value": [-4.2942587544286805, -6.3750996645633355, -6.842311507025828, -6.727350339276174]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.653393307358272, -9.851355439827955, -11.555601282434907, -7.92577896924314]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6460321604782693, -2.131872536039642, -2.1668316891527812, -1.7207505940782604]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.126858214508401, -2.82476174851791, -3.2917660630509373, -2.1397444074055616]}}