{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:52.040749", "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": "2010-Jun-15_to_2010-Jun-20_236.5_43.0"}, "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": 2010060000559}, "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 15 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 67098.22657585876}, "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": ["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": 43.0}, "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": 236.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "236.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 235.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 239.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 42.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-06-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.68, 44.18], [-123.65, 44.25], [-123.75, 44.5], [-123.65, 44.75], [-123.75, 45.0], [-123.53, 45.53], [-123.18, 45.68], [-123.15, 45.75], [-123.25, 46.0], [-123.15, 46.25], [-123.25, 46.5], [-123.03, 47.03], [-122.68, 47.18], [-122.65, 47.25], [-122.75, 47.5], [-122.53, 48.03], [-122.18, 48.18], [-122.03, 48.53], [-121.5, 48.75], [-121.25, 48.65], [-121.0, 48.75], [-120.47, 48.53], [-120.25, 48.0], [-120.35, 47.75], [-120.25, 47.5], [-120.35, 47.25], [-120.25, 47.0], [-120.35, 46.75], [-120.25, 46.5], [-120.46, 46.0], [-120.25, 45.5], [-120.47, 44.97], [-120.82, 44.82], [-120.97, 44.47], [-121.5, 44.25], [-121.75, 44.35], [-122.0, 44.25], [-122.25, 44.35], [-122.32, 44.32], [-122.35, 44.25], [-122.25, 44.0], [-122.47, 43.47], [-122.82, 43.32], [-122.85, 43.25], [-122.75, 43.0], [-122.97, 42.47], [-123.5, 42.25], [-123.75, 42.35], [-124.0, 42.25], [-124.53, 42.47], [-124.75, 43.0], [-124.53, 43.53], [-124.18, 43.68], [-124.03, 44.03], [-123.68, 44.18]]]]}, "2010-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.68, 44.18], [-123.65, 44.25], [-123.75, 44.5], [-123.65, 44.75], [-123.75, 45.0], [-123.53, 45.53], [-123.18, 45.68], [-123.15, 45.75], [-123.25, 46.0], [-123.15, 46.25], [-123.25, 46.5], [-123.03, 47.03], [-122.68, 47.18], [-122.65, 47.25], [-122.75, 47.5], [-122.53, 48.03], [-122.18, 48.18], [-122.03, 48.53], [-121.5, 48.75], [-121.25, 48.65], [-121.0, 48.75], [-120.47, 48.53], [-120.25, 48.0], [-120.35, 47.75], [-120.25, 47.5], [-120.35, 47.25], [-120.25, 47.0], [-120.35, 46.75], [-120.25, 46.5], [-120.46, 46.0], [-120.25, 45.5], [-120.47, 44.97], [-120.82, 44.82], [-120.97, 44.47], [-121.5, 44.25], [-121.75, 44.35], [-122.0, 44.25], [-122.25, 44.35], [-122.32, 44.32], [-122.35, 44.25], [-122.25, 44.0], [-122.47, 43.47], [-122.82, 43.32], [-122.85, 43.25], [-122.82, 43.18], [-122.47, 43.03], [-122.25, 42.5], [-122.47, 41.97], [-123.0, 41.75], [-123.53, 41.97], [-123.68, 42.32], [-123.75, 42.35], [-124.0, 42.25], [-124.53, 42.47], [-124.75, 43.0], [-124.53, 43.53], [-124.18, 43.68], [-124.03, 44.03], [-123.68, 44.18]]]]}, "2010-06-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-123.68, 44.18], [-123.65, 44.25], [-123.75, 44.5], [-123.65, 44.75], [-123.75, 45.0], [-123.53, 45.53], [-123.18, 45.68], [-123.15, 45.75], [-123.25, 46.0], [-123.15, 46.25], [-123.25, 46.5], [-123.03, 47.03], [-122.68, 47.18], [-122.65, 47.25], [-122.75, 47.5], [-122.53, 48.03], [-122.18, 48.18], [-122.03, 48.53], [-121.5, 48.75], [-121.25, 48.65], [-121.0, 48.75], [-120.47, 48.53], [-120.25, 48.0], [-120.35, 47.75], [-120.25, 47.5], [-120.35, 47.25], [-120.25, 47.0], [-120.35, 46.75], [-120.25, 46.5], [-120.46, 46.0], [-120.25, 45.5], [-120.47, 44.97], [-120.82, 44.82], [-120.97, 44.47], [-121.5, 44.25], [-121.75, 44.35], [-122.0, 44.25], [-122.25, 44.35], [-122.32, 44.32], [-122.35, 44.25], [-122.25, 44.0], [-122.47, 43.47], [-122.82, 43.32], [-122.85, 43.25], [-122.82, 43.18], [-122.47, 43.03], [-122.25, 42.5], [-122.47, 41.97], [-123.0, 41.75], [-123.53, 41.97], [-123.68, 42.32], [-123.75, 42.35], [-124.0, 42.25], [-124.53, 42.47], [-124.75, 43.0], [-124.53, 43.53], [-124.18, 43.68], [-124.03, 44.03], [-123.68, 44.18]]]]}, "2010-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.75, 43.0], [-124.53, 43.53], [-124.18, 43.68], [-124.03, 44.03], [-123.68, 44.18], [-123.53, 44.53], [-123.0, 44.75], [-122.47, 44.53], [-122.25, 44.0], [-122.46, 43.5], [-122.25, 43.0], [-122.35, 42.75], [-122.25, 42.5], [-122.47, 41.97], [-123.0, 41.75], [-123.25, 41.85], [-123.5, 41.75], [-124.03, 41.97], [-124.18, 42.32], [-124.53, 42.47], [-124.75, 43.0]]]]}, "2010-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.75, 43.0], [-124.53, 43.53], [-124.0, 43.75], [-123.75, 43.65], [-123.5, 43.75], [-123.25, 43.65], [-123.0, 43.75], [-122.47, 43.53], [-122.25, 43.0], [-122.35, 42.75], [-122.25, 42.5], [-122.47, 41.97], [-123.0, 41.75], [-123.25, 41.85], [-123.5, 41.75], [-124.03, 41.97], [-124.18, 42.32], [-124.53, 42.47], [-124.75, 43.0]]]]}, "2010-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-124.75, 43.0], [-124.53, 43.53], [-124.0, 43.75], [-123.75, 43.65], [-123.5, 43.75], [-123.25, 43.65], [-123.0, 43.75], [-122.47, 43.53], [-122.25, 43.0], [-122.35, 42.75], [-122.25, 42.5], [-122.47, 41.97], [-123.0, 41.75], [-123.25, 41.85], [-123.5, 41.75], [-124.03, 41.97], [-124.18, 42.32], [-124.53, 42.47], [-124.75, 43.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.74307508751707}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.2125843909191945}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [8.839330798142896, 7.449273227860033, 9.135322371588643, 11.365069232638177, 11.630764205194396, 11.802981864311732]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.5412593082684793, 1.8364300446149855, 3.6268394573693286, 10.46953410097484, 10.994827699558698, 11.024070337378873]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.7149964820659176, -5.315595128733625, -3.7576514950304043, -3.936572975802538, -3.865168201475683, -3.9740573679356657]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.868721099493598, -6.74307508751707, -5.2091125934964, -4.762488219286638, -4.581654032164181, -4.657784722935162]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2904028978913995, -1.88945194937933, -1.314047577655736, -1.5540946929920152, -1.4343351699624807, -1.426342211474804]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4342773571309926, -2.0959936949974174, -1.6094656504687916, -1.697740387910941, -1.552458103775201, -1.5623894029213399]}}