{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:59.801099", "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": "2016-Aug-07_to_2016-Aug-09_259.5_60.0"}, "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": 2016080000296}, "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": "August 07 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 09 2016"}, "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": 84810.01638521848}, "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"]}, "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": 60.0}, "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": 259.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "259.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 262.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 60.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 60.03], [-104.62, 60.2], [-104.75, 60.5], [-104.53, 61.03], [-104.0, 61.25], [-103.47, 61.03], [-103.32, 60.68], [-103.25, 60.65], [-103.0, 60.75], [-102.75, 60.65], [-102.5, 60.75], [-101.97, 60.53], [-101.82, 60.18], [-101.75, 60.15], [-101.5, 60.25], [-101.25, 60.15], [-101.18, 60.18], [-101.03, 60.53], [-100.5, 60.75], [-99.97, 60.53], [-99.82, 60.18], [-99.47, 60.03], [-99.32, 59.68], [-99.25, 59.65], [-99.0, 59.75], [-98.47, 59.53], [-98.32, 59.18], [-98.25, 59.15], [-98.0, 59.25], [-97.75, 59.15], [-97.5, 59.25], [-96.97, 59.03], [-96.75, 58.5], [-96.97, 57.97], [-97.32, 57.82], [-97.47, 57.47], [-98.0, 57.25], [-98.25, 57.35], [-98.32, 57.32], [-98.47, 56.97], [-99.0, 56.75], [-99.25, 56.85], [-99.5, 56.75], [-100.03, 56.97], [-100.18, 57.32], [-100.25, 57.35], [-100.5, 57.25], [-100.75, 57.35], [-101.0, 57.25], [-101.25, 57.35], [-101.5, 57.25], [-102.0, 57.46], [-102.5, 57.25], [-102.75, 57.35], [-103.0, 57.25], [-103.53, 57.47], [-103.68, 57.82], [-103.75, 57.85], [-104.0, 57.75], [-104.53, 57.97], [-104.68, 58.32], [-105.03, 58.47], [-105.25, 59.0], [-105.15, 59.25], [-105.25, 59.5], [-105.03, 60.03]]]]}, "2016-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 60.03], [-104.62, 60.2], [-104.75, 60.5], [-104.53, 61.03], [-104.0, 61.25], [-103.47, 61.03], [-103.32, 60.68], [-103.25, 60.65], [-103.0, 60.75], [-102.75, 60.65], [-102.5, 60.75], [-101.97, 60.53], [-101.82, 60.18], [-101.75, 60.15], [-101.5, 60.25], [-101.25, 60.15], [-101.18, 60.18], [-101.03, 60.53], [-100.5, 60.75], [-99.97, 60.53], [-99.82, 60.18], [-99.47, 60.03], [-99.32, 59.68], [-99.25, 59.65], [-99.0, 59.75], [-98.47, 59.53], [-98.32, 59.18], [-98.25, 59.15], [-98.0, 59.25], [-97.75, 59.15], [-97.5, 59.25], [-96.97, 59.03], [-96.75, 58.5], [-96.97, 57.97], [-97.32, 57.82], [-97.47, 57.47], [-98.0, 57.25], [-98.25, 57.35], [-98.32, 57.32], [-98.47, 56.97], [-99.0, 56.75], [-99.25, 56.85], [-99.5, 56.75], [-100.03, 56.97], [-100.18, 57.32], [-100.25, 57.35], [-100.5, 57.25], [-100.75, 57.35], [-101.0, 57.25], [-101.25, 57.35], [-101.5, 57.25], [-102.0, 57.46], [-102.5, 57.25], [-102.75, 57.35], [-103.0, 57.25], [-103.53, 57.47], [-103.68, 57.82], [-103.75, 57.85], [-104.0, 57.75], [-104.53, 57.97], [-104.68, 58.32], [-105.03, 58.47], [-105.25, 59.0], [-105.15, 59.25], [-105.25, 59.5], [-105.03, 60.03]]]]}, "2016-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.03, 60.03], [-104.62, 60.2], [-104.75, 60.5], [-104.53, 61.03], [-104.0, 61.25], [-103.47, 61.03], [-103.32, 60.68], [-103.25, 60.65], [-103.0, 60.75], [-102.75, 60.65], [-102.5, 60.75], [-101.97, 60.53], [-101.82, 60.18], [-101.75, 60.15], [-101.5, 60.25], [-101.25, 60.15], [-101.18, 60.18], [-101.03, 60.53], [-100.5, 60.75], [-99.97, 60.53], [-99.82, 60.18], [-99.47, 60.03], [-99.32, 59.68], [-99.25, 59.65], [-99.0, 59.75], [-98.47, 59.53], [-98.32, 59.18], [-98.25, 59.15], [-98.0, 59.25], [-97.75, 59.15], [-97.5, 59.25], [-96.97, 59.03], [-96.75, 58.5], [-96.97, 57.97], [-97.32, 57.82], [-97.47, 57.47], [-98.0, 57.25], [-98.25, 57.35], [-98.32, 57.32], [-98.47, 56.97], [-99.0, 56.75], [-99.25, 56.85], [-99.5, 56.75], [-100.03, 56.97], [-100.18, 57.32], [-100.25, 57.35], [-100.5, 57.25], [-100.75, 57.35], [-101.0, 57.25], [-101.25, 57.35], [-101.5, 57.25], [-102.0, 57.46], [-102.5, 57.25], [-102.75, 57.35], [-103.0, 57.25], [-103.53, 57.47], [-103.68, 57.82], [-103.75, 57.85], [-104.0, 57.75], [-104.53, 57.97], [-104.68, 58.32], [-105.03, 58.47], [-105.25, 59.0], [-105.15, 59.25], [-105.25, 59.5], [-105.03, 60.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.717422087908517}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.468192353949007}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.748875589153727, 9.022027507762516, 9.466289847943074]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.556213341139369, 6.480628129048796, 8.658257055112642]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.367751278838238, -5.841241430281391, -5.195584352727403]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.920882128338576, -7.717422087908517, -5.910118528375904]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4657201169720833, -1.556244753845025, -1.3977481082744139]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5950025464956772, -1.968148692626328, -1.5859106717476608]}}