{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:38.970974", "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": "2011-Jun-02_to_2011-Jun-05_200.5_23.5"}, "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": 2011060000210}, "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 02 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 05 2011"}, "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": 60077.496890749695}, "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.Pacific-Ocean"]}, "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": ["North Pacific Ocean"]}, "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": 23.5}, "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": 200.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "200.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 199.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 202.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 24.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-160.15, 23.75], [-160.25, 24.0], [-160.03, 24.53], [-159.5, 24.75], [-159.25, 24.65], [-159.0, 24.75], [-158.47, 24.53], [-158.25, 24.0], [-158.47, 23.47], [-158.82, 23.32], [-158.85, 23.25], [-158.75, 23.0], [-158.96, 22.5], [-158.75, 22.0], [-158.97, 21.47], [-159.5, 21.25], [-160.03, 21.47], [-160.25, 22.0], [-160.04, 22.5], [-160.25, 23.0], [-160.15, 23.25], [-160.25, 23.5], [-160.15, 23.75]]]]}, "2011-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-161.03, 23.03], [-160.68, 23.18], [-160.53, 23.53], [-160.18, 23.68], [-160.15, 23.75], [-160.25, 24.0], [-160.03, 24.53], [-159.5, 24.75], [-159.25, 24.65], [-159.0, 24.75], [-158.47, 24.53], [-158.25, 24.0], [-158.47, 23.47], [-158.82, 23.32], [-158.85, 23.25], [-158.82, 23.18], [-158.47, 23.03], [-158.32, 22.68], [-158.25, 22.65], [-158.0, 22.75], [-157.47, 22.53], [-157.25, 22.0], [-157.35, 21.75], [-157.25, 21.5], [-157.47, 20.97], [-157.82, 20.82], [-157.97, 20.47], [-158.5, 20.25], [-158.75, 20.35], [-159.0, 20.25], [-159.25, 20.35], [-159.5, 20.25], [-160.03, 20.47], [-160.25, 21.0], [-160.15, 21.25], [-160.18, 21.32], [-160.25, 21.35], [-160.5, 21.25], [-161.03, 21.47], [-161.25, 22.0], [-161.15, 22.25], [-161.25, 22.5], [-161.03, 23.03]]]]}, "2011-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-161.03, 23.03], [-160.68, 23.18], [-160.53, 23.53], [-160.18, 23.68], [-160.15, 23.75], [-160.25, 24.0], [-160.03, 24.53], [-159.5, 24.75], [-159.25, 24.65], [-159.0, 24.75], [-158.47, 24.53], [-158.25, 24.0], [-158.47, 23.47], [-158.82, 23.32], [-158.85, 23.25], [-158.82, 23.18], [-158.47, 23.03], [-158.32, 22.68], [-158.25, 22.65], [-158.0, 22.75], [-157.47, 22.53], [-157.25, 22.0], [-157.35, 21.75], [-157.25, 21.5], [-157.47, 20.97], [-157.82, 20.82], [-157.97, 20.47], [-158.5, 20.25], [-158.75, 20.35], [-159.0, 20.25], [-159.25, 20.35], [-159.5, 20.25], [-160.03, 20.47], [-160.25, 21.0], [-160.15, 21.25], [-160.18, 21.32], [-160.25, 21.35], [-160.5, 21.25], [-161.03, 21.47], [-161.25, 22.0], [-161.15, 22.25], [-161.25, 22.5], [-161.03, 23.03]]]]}, "2011-06-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-161.03, 23.03], [-160.68, 23.18], [-160.53, 23.53], [-160.18, 23.68], [-160.15, 23.75], [-160.25, 24.0], [-160.03, 24.53], [-159.5, 24.75], [-159.25, 24.65], [-159.0, 24.75], [-158.47, 24.53], [-158.25, 24.0], [-158.47, 23.47], [-158.82, 23.32], [-158.85, 23.25], [-158.82, 23.18], [-158.47, 23.03], [-158.32, 22.68], [-158.25, 22.65], [-158.0, 22.75], [-157.47, 22.53], [-157.25, 22.0], [-157.35, 21.75], [-157.25, 21.5], [-157.47, 20.97], [-157.82, 20.82], [-157.97, 20.47], [-158.5, 20.25], [-158.75, 20.35], [-159.0, 20.25], [-159.25, 20.35], [-159.5, 20.25], [-160.03, 20.47], [-160.25, 21.0], [-160.15, 21.25], [-160.18, 21.32], [-160.25, 21.35], [-160.5, 21.25], [-161.03, 21.47], [-161.25, 22.0], [-161.15, 22.25], [-161.25, 22.5], [-161.03, 23.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.797062542481342}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2316153300408188}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.802426231656455, 23.25883397091303, 23.218562496112554, 23.08186956053288]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.187109492064963, 21.744423371966434, 22.09556662401019, 21.77407582790289]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.073172459907005, -1.1434175240554212, -1.2135796457367047, -1.3755733132193335]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1627314093743166, -1.6169028793872826, -1.5554563316769645, -1.797062542481342]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4900508076403922, -1.708866706785234, -1.8476682198457457, -2.1266377417113866]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.646222362460321, -2.0062951373348836, -2.5220117652562335, -2.4157211180993783]}}