{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:37.645762", "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": "2015-Aug-19_to_2015-Aug-21_264.5_37.0"}, "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": 2015080000742}, "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 19 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 21 2015"}, "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": 207575.1700002133}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North America"]}, "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": 37.0}, "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": 264.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "264.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 258.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 268.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 35.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 38.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.53, 37.03], [-101.18, 37.18], [-101.03, 37.53], 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34.85], [-96.0, 34.75], [-96.25, 34.85], [-96.5, 34.75], [-96.75, 34.85], [-97.0, 34.75], [-97.53, 34.97], [-97.68, 35.32], [-97.75, 35.35], [-98.0, 35.25], [-98.25, 35.35], [-98.5, 35.25], [-98.75, 35.35], [-99.0, 35.25], [-99.25, 35.35], [-99.5, 35.25], [-99.75, 35.35], [-100.0, 35.25], [-100.25, 35.35], [-100.5, 35.25], [-100.75, 35.35], [-101.0, 35.25], [-101.53, 35.47], [-101.75, 36.0], [-101.65, 36.25], [-101.75, 36.5], [-101.53, 37.03]]]]}, "2015-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.53, 37.03], [-101.18, 37.18], [-101.03, 37.53], [-100.68, 37.68], [-100.53, 38.03], [-100.0, 38.25], [-99.75, 38.15], [-99.5, 38.25], [-99.25, 38.15], [-99.0, 38.25], [-98.75, 38.15], [-98.5, 38.25], [-98.25, 38.15], [-98.18, 38.18], [-98.03, 38.53], [-97.5, 38.75], [-97.25, 38.65], [-97.18, 38.68], [-97.03, 39.03], [-96.5, 39.25], [-96.25, 39.15], [-96.0, 39.25], [-95.75, 39.15], [-95.5, 39.25], [-94.97, 39.03], [-94.82, 38.68], [-94.75, 38.65], [-94.5, 38.75], [-94.25, 38.65], [-94.0, 38.75], [-93.47, 38.53], [-93.32, 38.18], [-93.25, 38.15], [-93.0, 38.25], [-92.75, 38.15], [-92.5, 38.25], [-92.25, 38.15], [-92.18, 38.18], [-92.03, 38.53], [-91.5, 38.75], [-90.97, 38.53], [-90.75, 38.0], [-90.85, 37.75], [-90.75, 37.5], [-90.97, 36.97], [-91.32, 36.82], [-91.47, 36.47], [-92.0, 36.25], [-92.25, 36.35], [-92.32, 36.32], [-92.47, 35.97], [-93.0, 35.75], [-93.25, 35.85], [-93.32, 35.82], [-93.47, 35.47], [-94.0, 35.25], [-94.25, 35.35], [-94.5, 35.25], [-94.75, 35.35], [-94.82, 35.32], [-94.97, 34.97], [-95.5, 34.75], [-95.75, 34.85], [-96.0, 34.75], [-96.25, 34.85], [-96.5, 34.75], [-96.75, 34.85], [-97.0, 34.75], [-97.53, 34.97], [-97.68, 35.32], [-97.75, 35.35], [-98.0, 35.25], [-98.25, 35.35], [-98.5, 35.25], [-98.75, 35.35], [-99.0, 35.25], [-99.25, 35.35], [-99.5, 35.25], [-99.75, 35.35], [-100.0, 35.25], [-100.25, 35.35], [-100.5, 35.25], [-100.75, 35.35], [-101.0, 35.25], [-101.53, 35.47], [-101.75, 36.0], [-101.65, 36.25], [-101.75, 36.5], [-101.53, 37.03]]]]}, "2015-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.53, 37.03], [-101.18, 37.18], [-101.03, 37.53], [-100.68, 37.68], [-100.53, 38.03], [-100.0, 38.25], [-99.75, 38.15], [-99.5, 38.25], [-99.25, 38.15], [-99.0, 38.25], [-98.75, 38.15], [-98.5, 38.25], [-98.25, 38.15], [-98.18, 38.18], [-98.03, 38.53], [-97.5, 38.75], [-97.25, 38.65], [-97.18, 38.68], [-97.03, 39.03], [-96.5, 39.25], [-96.25, 39.15], [-96.0, 39.25], [-95.75, 39.15], [-95.5, 39.25], [-94.97, 39.03], [-94.82, 38.68], [-94.75, 38.65], [-94.5, 38.75], [-94.25, 38.65], [-94.0, 38.75], [-93.47, 38.53], [-93.32, 38.18], [-93.25, 38.15], [-93.0, 38.25], [-92.75, 38.15], [-92.5, 38.25], [-92.25, 38.15], [-92.18, 38.18], [-92.03, 38.53], [-91.5, 38.75], [-90.97, 38.53], [-90.75, 38.0], [-90.85, 37.75], [-90.75, 37.5], [-90.97, 36.97], [-91.32, 36.82], [-91.47, 36.47], [-92.0, 36.25], [-92.25, 36.35], [-92.32, 36.32], [-92.47, 35.97], [-93.0, 35.75], [-93.25, 35.85], 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"value": [20.104138263586833, 19.10664616830792, 21.189016433399956]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.554222341882166, 17.53656016053168, 19.548327140173]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.845133987706085, -6.853952742136954, -4.764024544319376]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.1826526311465955, -8.018890751418894, -5.956640446657104]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8923367072611998, -2.2511133477315273, -1.5918265611486173]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3772299531955827, -2.6315368919619075, -1.9879030406517324]}}