{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:16.398187", "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": "2017-Jun-28_to_2017-Jul-01_258.0_55.0"}, "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": 2017060000927}, "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": "June 28 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 01 2017"}, "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": 132443.14106918412}, "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": ["Canada"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America", "N.W.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": 55.0}, "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": 258.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 261.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "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": {"2017-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.25, 56.0], [-106.03, 56.53], [-105.5, 56.75], [-105.25, 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[-105.62, 55.3], [-106.03, 55.47], [-106.25, 56.0]]]]}, "2017-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.25, 56.0], [-106.03, 56.53], [-105.5, 56.75], [-105.25, 56.65], [-105.0, 56.75], [-104.75, 56.65], [-104.68, 56.68], [-104.53, 57.03], [-104.0, 57.25], [-103.75, 57.15], [-103.5, 57.25], [-103.25, 57.15], [-103.0, 57.25], [-102.75, 57.15], [-102.5, 57.25], [-102.25, 57.15], [-102.18, 57.18], [-102.03, 57.53], [-101.5, 57.75], [-101.25, 57.65], [-101.0, 57.75], [-100.75, 57.65], [-100.5, 57.75], [-99.97, 57.53], [-99.82, 57.18], [-99.47, 57.03], [-99.25, 56.5], [-99.35, 56.25], [-99.32, 56.18], [-99.25, 56.15], [-99.0, 56.25], [-98.47, 56.03], [-98.25, 55.5], [-98.35, 55.25], [-98.25, 55.0], [-98.47, 54.47], [-98.82, 54.32], [-98.85, 54.25], [-98.75, 54.0], [-98.97, 53.47], [-99.32, 53.32], [-99.47, 52.97], [-100.0, 52.75], [-100.25, 52.85], [-100.32, 52.82], [-100.47, 52.47], [-101.0, 52.25], [-101.5, 52.46], [-102.0, 52.25], [-102.53, 52.47], 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"value": [10.872736222173785, 10.275362904185556, 11.393557680677134, 12.141877534087996]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.990219337470364, 8.054896443743871, 9.073266324869394, 10.24383458626238]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.371173755705078, -6.0980946340678335, -5.171631799745061, -4.550921370353075]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.989702355723068, -7.526846880101118, -6.393270543372523, -5.395401251043438]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5379998008206355, -1.8459705985726067, -1.6185982009969946, -1.4531727903161848]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7365256066811794, -2.1687551141099357, -1.923511796947066, -1.5984771625911416]}}