{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:47.712527", "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": "2012-Nov-05_to_2012-Nov-08_215.5_64.5"}, "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": 2012110000292}, "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": "November 05 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 08 2012"}, "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": 61890.80131140219}, "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": ["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": 64.5}, "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": 215.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "215.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 207.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 216.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 62.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 65.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-150.03, 62.97], [-150.25, 63.5], [-150.03, 64.03], [-149.5, 64.25], [-148.97, 64.03], [-148.75, 63.5], [-148.97, 62.97], [-149.5, 62.75], [-150.03, 62.97]]], [[[-147.75, 64.15], [-147.5, 64.25], [-147.25, 64.15], [-147.0, 64.25], [-146.47, 64.03], [-146.25, 63.5], [-146.47, 62.97], [-147.0, 62.75], [-147.25, 62.85], [-147.5, 62.75], [-147.75, 62.85], [-148.0, 62.75], [-148.53, 62.97], [-148.75, 63.5], [-148.53, 64.03], [-148.0, 64.25], [-147.75, 64.15]]]]}, "2012-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-151.5, 64.75], [-151.25, 64.65], [-151.12, 64.7], [-151.25, 65.0], [-151.03, 65.53], [-150.5, 65.75], [-149.97, 65.53], [-149.82, 65.18], [-149.75, 65.15], [-149.5, 65.25], [-149.2, 65.13], [-149.03, 65.53], [-148.5, 65.75], [-148.25, 65.65], [-148.18, 65.68], [-148.03, 66.03], [-147.5, 66.25], [-147.25, 66.15], [-147.0, 66.25], [-146.75, 66.15], [-146.5, 66.25], [-145.97, 66.03], [-145.82, 65.68], [-145.75, 65.65], [-145.5, 65.75], [-144.97, 65.53], [-144.82, 65.18], [-144.75, 65.15], [-144.5, 65.25], [-143.97, 65.03], [-143.82, 64.68], [-143.47, 64.53], [-143.25, 64.0], [-143.47, 63.47], [-144.0, 63.25], [-144.53, 63.47], [-144.68, 63.82], [-144.75, 63.85], [-145.0, 63.75], [-145.25, 63.85], [-145.32, 63.82], [-145.47, 63.47], [-146.0, 63.25], [-146.25, 63.35], [-146.32, 63.32], [-146.47, 62.97], [-147.0, 62.75], [-147.25, 62.85], [-147.5, 62.75], [-147.75, 62.85], [-147.82, 62.82], [-147.97, 62.47], [-148.5, 62.25], [-148.75, 62.35], [-149.0, 62.25], [-149.25, 62.35], [-149.5, 62.25], [-150.03, 62.47], [-150.2, 62.88], [-150.5, 62.75], [-150.75, 62.85], [-151.0, 62.75], [-151.25, 62.85], [-151.5, 62.75], [-151.75, 62.85], [-152.0, 62.75], [-152.53, 62.97], [-152.75, 63.5], [-152.53, 64.03], [-152.18, 64.18], [-152.03, 64.53], [-151.5, 64.75]]]]}, "2012-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-151.5, 64.75], [-151.25, 64.65], [-151.12, 64.7], [-151.25, 65.0], [-151.03, 65.53], [-150.5, 65.75], [-149.97, 65.53], [-149.82, 65.18], [-149.75, 65.15], [-149.5, 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[-152.53, 62.97], [-152.75, 63.5], [-152.53, 64.03], [-152.18, 64.18], [-152.03, 64.53], [-151.5, 64.75]]]]}, "2012-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-151.5, 64.75], [-151.25, 64.65], [-151.12, 64.7], [-151.25, 65.0], [-151.03, 65.53], [-150.5, 65.75], [-149.97, 65.53], [-149.82, 65.18], [-149.75, 65.15], [-149.5, 65.25], [-149.2, 65.13], [-149.03, 65.53], [-148.5, 65.75], [-148.25, 65.65], [-148.18, 65.68], [-148.03, 66.03], [-147.5, 66.25], [-147.25, 66.15], [-147.0, 66.25], [-146.75, 66.15], [-146.5, 66.25], [-145.97, 66.03], [-145.82, 65.68], [-145.75, 65.65], [-145.5, 65.75], [-144.97, 65.53], [-144.82, 65.18], [-144.75, 65.15], [-144.5, 65.25], [-143.97, 65.03], [-143.82, 64.68], [-143.47, 64.53], [-143.25, 64.0], [-143.47, 63.47], [-144.0, 63.25], [-144.53, 63.47], [-144.68, 63.82], [-144.75, 63.85], [-145.0, 63.75], [-145.25, 63.85], [-145.32, 63.82], [-145.47, 63.47], [-146.0, 63.25], [-146.25, 63.35], [-146.5, 63.25], [-146.75, 63.35], 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"Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-22.972304540543036, -27.83236057507986, -33.64501120718117, -30.178031296351406]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.588204046021723, -10.25590271975548, -13.502081083415774, -11.550871627446847]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.004872469473725, -15.200579581486949, -18.48847216778333, -14.836655089069978]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4108259764973528, -1.6613786930498267, -2.1944083456129055, -1.8621969440078057]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4942661257214984, -2.257236905295041, -3.0367121432227724, -2.36541009679065]}}