{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:56.692147", "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-Jan-23_to_2022-Jan-26_68.0_33.5"}, "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": 2022010000889}, "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 23 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 26 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": 51812.81755536413}, "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": ["Afghanistan", "Pakistan"]}, "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": 33.5}, "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": 68.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "68.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 67.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 70.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[69.53, 30.97], [69.0, 30.75], [68.47, 30.97], [68.25, 31.5], [68.47, 32.03], [69.0, 32.25], [69.53, 32.03], [69.75, 31.5], [69.53, 30.97]]], [[[67.47, 34.53], [68.0, 34.75], [68.25, 34.65], [68.32, 34.68], [68.47, 35.03], [69.0, 35.25], [69.25, 35.15], [69.5, 35.25], [70.03, 35.03], [70.25, 34.5], [70.04, 34.0], [70.25, 33.5], [70.03, 32.97], [69.68, 32.82], [69.53, 32.47], [69.0, 32.25], [68.47, 32.47], [68.3, 32.88], [68.18, 32.82], [68.03, 32.47], [67.5, 32.25], [66.97, 32.47], [66.75, 33.0], [66.97, 33.53], [67.32, 33.68], [67.35, 33.75], [67.25, 34.0], [67.47, 34.53]]]]}, "2022-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.97, 33.53], [67.32, 33.68], [67.35, 33.75], [67.25, 34.0], [67.47, 34.53], [68.0, 34.75], [68.25, 34.65], [68.32, 34.68], [68.47, 35.03], [69.0, 35.25], [69.25, 35.15], [69.5, 35.25], [70.03, 35.03], [70.25, 34.5], [70.04, 34.0], [70.18, 33.68], [70.53, 33.53], [70.75, 33.0], [70.53, 32.47], [70.18, 32.32], [70.03, 31.97], [69.68, 31.82], [69.65, 31.75], [69.75, 31.5], [69.53, 30.97], [69.0, 30.75], [68.47, 30.97], [68.3, 31.38], [68.0, 31.25], [67.75, 31.35], [67.5, 31.25], [66.97, 31.47], [66.75, 32.0], [66.96, 32.5], [66.75, 33.0], [66.97, 33.53]]]]}, "2022-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.97, 33.53], [67.32, 33.68], [67.35, 33.75], [67.25, 34.0], [67.47, 34.53], [68.0, 34.75], [68.25, 34.65], [68.32, 34.68], [68.47, 35.03], [69.0, 35.25], [69.25, 35.15], [69.5, 35.25], [70.03, 35.03], [70.25, 34.5], [70.04, 34.0], [70.18, 33.68], [70.53, 33.53], [70.75, 33.0], [70.53, 32.47], [70.18, 32.32], [70.03, 31.97], [69.68, 31.82], [69.65, 31.75], [69.75, 31.5], [69.53, 30.97], [69.0, 30.75], [68.47, 30.97], [68.3, 31.38], [68.0, 31.25], [67.75, 31.35], [67.5, 31.25], [66.97, 31.47], [66.75, 32.0], [66.96, 32.5], [66.75, 33.0], [66.97, 33.53]]]]}, "2022-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[66.97, 33.53], [67.32, 33.68], [67.35, 33.75], [67.25, 34.0], [67.47, 34.53], [68.0, 34.75], [68.25, 34.65], [68.32, 34.68], [68.47, 35.03], [69.0, 35.25], [69.25, 35.15], [69.5, 35.25], [70.03, 35.03], [70.25, 34.5], [70.04, 34.0], [70.18, 33.68], [70.53, 33.53], [70.75, 33.0], [70.53, 32.47], [70.18, 32.32], [70.03, 31.97], [69.68, 31.82], [69.65, 31.75], [69.75, 31.5], [69.53, 30.97], [69.0, 30.75], [68.47, 30.97], [68.3, 31.38], [68.0, 31.25], [67.75, 31.35], [67.5, 31.25], [66.97, 31.47], [66.75, 32.0], [66.96, 32.5], [66.75, 33.0], [66.97, 33.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.063261756776825}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.552462985125305}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-14.388469701354097, -11.74190647686936, -11.532365777264829, -11.391048804603884]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-21.28743450592887, -20.248929562394807, -19.842973467085358, -19.960538785957368]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.695502999770333, -7.674981703501989, -7.480786179771071, -7.4311893855329725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.063261756776825, -9.08967995454995, -9.74200104317282, -9.3743087109834]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6114533384957148, -1.6395246055266846, -1.6228505074715005, -1.6317173964673688]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8393710950774782, -1.8777035730341864, -2.0221781633730314, -1.990343237893047]}}