{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:19:06.805775", "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-Feb-20_to_2019-Feb-23_70.0_27.5"}, "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": 2019020000636}, "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": "February 20 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 23 2019"}, "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": 54595.467797327285}, "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": ["India", "Pakistan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": 27.5}, "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": 70.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "70.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 67.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 71.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 26.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.47, 29.53], [68.0, 29.75], [68.53, 29.53], [68.68, 29.18], [68.75, 29.15], [69.0, 29.25], [69.25, 29.15], [69.5, 29.25], [70.03, 29.03], [70.18, 28.68], [70.25, 28.65], [70.32, 28.68], [70.47, 29.03], [71.0, 29.25], [71.25, 29.15], [71.5, 29.25], [72.03, 29.03], [72.25, 28.5], [72.03, 27.97], [71.68, 27.82], [71.53, 27.47], [71.18, 27.32], [71.03, 26.97], [70.5, 26.75], [70.25, 26.85], [70.18, 26.82], [70.03, 26.47], [69.5, 26.25], [68.97, 26.47], [68.82, 26.82], [68.75, 26.85], [68.5, 26.75], [67.97, 26.97], [67.75, 27.5], [67.85, 27.75], [67.82, 27.82], [67.47, 27.97], [67.25, 28.5], [67.35, 28.75], [67.25, 29.0], [67.47, 29.53]]]]}, "2019-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.47, 29.53], [68.0, 29.75], [68.53, 29.53], [68.68, 29.18], [68.75, 29.15], [69.0, 29.25], [69.25, 29.15], [69.5, 29.25], [70.03, 29.03], [70.18, 28.68], [70.25, 28.65], [70.32, 28.68], [70.47, 29.03], [71.0, 29.25], [71.25, 29.15], [71.5, 29.25], [72.03, 29.03], [72.25, 28.5], [72.03, 27.97], [71.68, 27.82], [71.53, 27.47], [71.18, 27.32], [71.03, 26.97], [70.5, 26.75], [70.25, 26.85], [70.18, 26.82], [70.03, 26.47], [69.5, 26.25], [69.25, 26.35], [69.0, 26.25], [68.47, 26.47], [68.32, 26.82], [67.97, 26.97], [67.75, 27.5], [67.85, 27.75], [67.82, 27.82], [67.47, 27.97], [67.25, 28.5], [67.35, 28.75], [67.25, 29.0], [67.47, 29.53]]]]}, "2019-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.47, 29.53], [68.0, 29.75], [68.53, 29.53], [68.68, 29.18], [68.75, 29.15], [69.0, 29.25], [69.25, 29.15], [69.5, 29.25], [70.03, 29.03], [70.18, 28.68], [70.25, 28.65], [70.32, 28.68], [70.47, 29.03], [71.0, 29.25], [71.25, 29.15], [71.5, 29.25], [72.03, 29.03], [72.25, 28.5], [72.03, 27.97], [71.68, 27.82], [71.53, 27.47], [71.18, 27.32], [71.03, 26.97], [70.5, 26.75], [70.25, 26.85], [70.18, 26.82], [70.03, 26.47], [69.5, 26.25], [69.25, 26.35], [69.0, 26.25], [68.47, 26.47], [68.32, 26.82], [67.97, 26.97], [67.75, 27.5], [67.85, 27.75], [67.82, 27.82], [67.47, 27.97], [67.25, 28.5], [67.35, 28.75], [67.25, 29.0], [67.47, 29.53]]]]}, "2019-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[68.47, 26.47], [68.25, 27.0], [68.47, 27.53], [69.0, 27.75], [69.25, 27.65], [69.32, 27.68], [69.47, 28.03], [70.0, 28.25], [70.53, 28.03], [70.75, 27.5], [70.53, 26.97], [70.18, 26.82], [70.03, 26.47], [69.5, 26.25], [69.25, 26.35], [69.0, 26.25], [68.47, 26.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.390516816335662}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.582335370515065}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.24829894625941, 15.42600103880875, 16.264167897734353, 17.609131365370217]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.059769834941562, 14.955903584158989, 15.648973161459196, 17.084635782025714]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.4376890431139095, -4.537338681214498, -3.9125329724797266, -3.9304226929617507]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.390516816335662, -5.357838793175404, -4.855230663189843, -4.042893520185828]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9913559276855772, -1.670052499721168, -1.4442623459439572, -1.3907911841483553]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.37865362177806, -1.8540676977838164, -1.6753455114096836, -1.415846202499783]}}