{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:56:37.905304", "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": "2014-Jun-18_to_2014-Jun-20_218.0_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": 2014060000730}, "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 18 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 20 2014"}, "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": 88795.87038183815}, "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", "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": 218.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "218.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 210.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 219.75}, "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": 65.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-06-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-149.75, 65.0], [-149.53, 65.53], [-149.0, 65.75], [-148.75, 65.65], [-148.5, 65.75], [-148.25, 65.65], [-148.0, 65.75], [-147.75, 65.65], [-147.5, 65.75], [-147.25, 65.65], [-147.0, 65.75], [-146.75, 65.65], [-146.5, 65.75], [-146.25, 65.65], [-146.0, 65.75], [-145.75, 65.65], [-145.5, 65.75], [-145.25, 65.65], [-145.0, 65.75], [-144.75, 65.65], [-144.5, 65.75], [-144.25, 65.65], [-144.0, 65.75], [-143.75, 65.65], [-143.5, 65.75], [-143.25, 65.65], [-143.0, 65.75], [-142.75, 65.65], [-142.5, 65.75], [-142.25, 65.65], [-142.0, 65.75], [-141.75, 65.65], [-141.5, 65.75], [-141.25, 65.65], [-141.0, 65.75], [-140.75, 65.65], [-140.5, 65.75], [-139.97, 65.53], [-139.75, 65.0], [-139.85, 64.75], [-139.75, 64.5], [-139.97, 63.97], [-140.32, 63.82], [-140.47, 63.47], [-141.0, 63.25], [-141.25, 63.35], [-141.5, 63.25], [-141.75, 63.35], [-142.0, 63.25], [-142.25, 63.35], [-142.32, 63.32], [-142.47, 62.97], [-143.0, 62.75], [-143.25, 62.85], [-143.32, 62.82], [-143.47, 62.47], [-144.0, 62.25], [-144.25, 62.35], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.5, 62.25], [-145.75, 62.35], [-146.0, 62.25], [-146.25, 62.35], [-146.5, 62.25], [-147.03, 62.47], [-147.18, 62.82], [-147.25, 62.85], [-147.5, 62.75], [-147.75, 62.85], [-148.0, 62.75], [-148.25, 62.85], [-148.5, 62.75], [-148.75, 62.85], [-149.0, 62.75], [-149.53, 62.97], [-149.75, 63.5], [-149.53, 64.03], [-149.0, 64.25], [-149.53, 64.47], [-149.75, 65.0]], [[-148.75, 64.15], [-148.68, 64.18], [-148.62, 64.3], [-148.75, 64.35], [-149.0, 64.25], [-148.75, 64.15]]]]}, "2014-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-149.75, 65.0], [-149.53, 65.53], [-149.0, 65.75], [-148.75, 65.65], [-148.5, 65.75], [-148.25, 65.65], [-148.0, 65.75], [-147.75, 65.65], [-147.5, 65.75], [-147.25, 65.65], [-147.0, 65.75], [-146.75, 65.65], [-146.5, 65.75], [-146.25, 65.65], [-146.0, 65.75], [-145.75, 65.65], [-145.5, 65.75], [-145.25, 65.65], [-145.0, 65.75], [-144.75, 65.65], [-144.5, 65.75], [-144.25, 65.65], [-144.0, 65.75], [-143.75, 65.65], [-143.5, 65.75], [-143.25, 65.65], [-143.0, 65.75], [-142.75, 65.65], [-142.5, 65.75], [-142.25, 65.65], [-142.0, 65.75], [-141.75, 65.65], [-141.5, 65.75], [-141.25, 65.65], [-141.0, 65.75], [-140.75, 65.65], [-140.5, 65.75], [-139.97, 65.53], [-139.75, 65.0], [-139.85, 64.75], [-139.75, 64.5], [-139.97, 63.97], [-140.32, 63.82], [-140.47, 63.47], [-141.0, 63.25], [-141.25, 63.35], [-141.5, 63.25], [-141.75, 63.35], [-142.0, 63.25], [-142.25, 63.35], [-142.32, 63.32], [-142.47, 62.97], [-143.0, 62.75], [-143.25, 62.85], [-143.32, 62.82], [-143.47, 62.47], [-144.0, 62.25], [-144.25, 62.35], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.5, 62.25], [-145.75, 62.35], [-146.0, 62.25], [-146.25, 62.35], [-146.5, 62.25], [-147.03, 62.47], [-147.18, 62.82], [-147.25, 62.85], [-147.5, 62.75], [-147.75, 62.85], [-148.0, 62.75], [-148.25, 62.85], [-148.5, 62.75], [-148.75, 62.85], [-149.0, 62.75], [-149.53, 62.97], [-149.75, 63.5], [-149.53, 64.03], [-149.0, 64.25], [-149.53, 64.47], [-149.75, 65.0]], [[-148.75, 64.15], [-148.68, 64.18], [-148.62, 64.3], [-148.75, 64.35], [-149.0, 64.25], [-148.75, 64.15]]]]}, "2014-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-149.75, 65.0], [-149.53, 65.53], [-149.0, 65.75], [-148.75, 65.65], [-148.5, 65.75], [-148.25, 65.65], [-148.0, 65.75], [-147.75, 65.65], [-147.5, 65.75], [-147.25, 65.65], [-147.0, 65.75], [-146.75, 65.65], [-146.5, 65.75], [-146.25, 65.65], [-146.0, 65.75], [-145.75, 65.65], [-145.5, 65.75], [-145.25, 65.65], [-145.0, 65.75], [-144.75, 65.65], [-144.5, 65.75], [-144.25, 65.65], [-144.0, 65.75], [-143.75, 65.65], [-143.5, 65.75], [-143.25, 65.65], [-143.0, 65.75], [-142.75, 65.65], [-142.5, 65.75], [-142.25, 65.65], [-142.0, 65.75], [-141.75, 65.65], [-141.5, 65.75], [-141.25, 65.65], [-141.0, 65.75], [-140.75, 65.65], [-140.5, 65.75], [-139.97, 65.53], [-139.75, 65.0], [-139.85, 64.75], [-139.75, 64.5], [-139.97, 63.97], [-140.32, 63.82], [-140.47, 63.47], [-141.0, 63.25], [-141.25, 63.35], [-141.5, 63.25], [-141.75, 63.35], [-142.0, 63.25], [-142.25, 63.35], [-142.32, 63.32], [-142.47, 62.97], [-143.0, 62.75], [-143.25, 62.85], [-143.32, 62.82], [-143.47, 62.47], [-144.0, 62.25], [-144.25, 62.35], [-144.5, 62.25], [-144.75, 62.35], [-145.0, 62.25], [-145.25, 62.35], [-145.5, 62.25], [-145.75, 62.35], [-146.0, 62.25], [-146.25, 62.35], [-146.5, 62.25], [-147.03, 62.47], [-147.18, 62.82], [-147.25, 62.85], [-147.5, 62.75], [-147.75, 62.85], [-148.0, 62.75], [-148.25, 62.85], [-148.5, 62.75], [-148.75, 62.85], [-149.0, 62.75], [-149.53, 62.97], [-149.75, 63.5], [-149.53, 64.03], [-149.0, 64.25], [-149.53, 64.47], [-149.75, 65.0]], [[-148.75, 64.15], [-148.68, 64.18], [-148.62, 64.3], [-148.75, 64.35], [-149.0, 64.25], [-148.75, 64.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.203996702647828}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.552968703515323}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.931557932638668, 6.041142095644375, 7.9902621030689716]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.0873784243627824, 0.6294705949657668, 0.6439283473432056]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.503410531538775, -6.524283401862171, -4.63121217714503]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.005444939053405, -9.203996702647828, -6.404577326502022]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.9774249772592085, -2.277147489022664, -1.5681857357996656]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.000662426847925, -3.2904568613863354, -2.2278952219742076]}}