{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:12.445257", "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-Jul-29_to_2010-Jul-31_285.0_48.5"}, "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": 2010070001199}, "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": "July 29 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 31 2010"}, "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": 150357.098163647}, "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": ["E.North-America", "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": 48.5}, "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": 285.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "285.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 282.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, 49.0], [-77.04, 49.5], [-77.25, 50.0], [-77.03, 50.53], [-76.68, 50.68], [-76.53, 51.03], [-76.0, 51.25], [-75.75, 51.15], [-75.68, 51.18], [-75.53, 51.53], [-75.0, 51.75], [-74.75, 51.65], [-74.68, 51.68], [-74.53, 52.03], [-74.0, 52.25], [-73.47, 52.03], [-73.3, 51.62], [-73.18, 51.68], [-73.03, 52.03], [-72.5, 52.25], [-71.97, 52.03], [-71.82, 51.68], [-71.75, 51.65], [-71.5, 51.75], [-70.97, 51.53], [-70.82, 51.18], [-70.75, 51.15], [-70.5, 51.25], [-69.97, 51.03], [-69.82, 50.68], [-69.47, 50.53], [-69.25, 50.0], [-69.47, 49.47], [-70.0, 49.25], [-70.25, 49.35], [-70.32, 49.32], [-70.35, 49.25], [-70.32, 49.18], [-69.97, 49.03], [-69.75, 48.5], [-69.97, 47.97], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.5, 47.96], [-72.0, 47.75], [-72.5, 47.96], [-73.0, 47.75], [-73.25, 47.85], [-73.32, 47.82], [-73.47, 47.47], [-74.0, 47.25], [-74.25, 47.35], [-74.5, 47.25], [-74.75, 47.35], [-75.0, 47.25], [-75.25, 47.35], [-75.5, 47.25], [-75.75, 47.35], [-76.0, 47.25], [-76.25, 47.35], [-76.5, 47.25], [-76.75, 47.35], [-77.0, 47.25], [-77.53, 47.47], [-77.75, 48.0], [-77.53, 48.53], [-77.18, 48.68], [-77.15, 48.75], [-77.25, 49.0]]]]}, "2010-07-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, 49.0], [-77.04, 49.5], [-77.25, 50.0], [-77.03, 50.53], [-76.68, 50.68], [-76.53, 51.03], [-76.0, 51.25], [-75.75, 51.15], [-75.68, 51.18], [-75.53, 51.53], [-75.0, 51.75], [-74.75, 51.65], [-74.68, 51.68], [-74.53, 52.03], [-74.0, 52.25], [-73.47, 52.03], [-73.3, 51.62], [-73.18, 51.68], [-73.03, 52.03], [-72.5, 52.25], [-71.97, 52.03], [-71.82, 51.68], [-71.75, 51.65], [-71.5, 51.75], [-70.97, 51.53], [-70.82, 51.18], [-70.75, 51.15], [-70.5, 51.25], [-69.97, 51.03], [-69.82, 50.68], [-69.47, 50.53], [-69.25, 50.0], [-69.47, 49.47], [-70.0, 49.25], [-70.25, 49.35], [-70.32, 49.32], [-70.35, 49.25], [-70.32, 49.18], [-69.97, 49.03], [-69.75, 48.5], [-69.97, 47.97], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.5, 47.96], [-72.0, 47.75], [-72.5, 47.96], [-73.0, 47.75], [-73.25, 47.85], [-73.32, 47.82], [-73.47, 47.47], [-74.0, 47.25], [-74.25, 47.35], [-74.5, 47.25], [-74.75, 47.35], [-75.0, 47.25], [-75.25, 47.35], [-75.5, 47.25], [-75.75, 47.35], [-76.0, 47.25], [-76.25, 47.35], [-76.5, 47.25], [-76.75, 47.35], [-77.0, 47.25], [-77.53, 47.47], [-77.75, 48.0], [-77.53, 48.53], [-77.18, 48.68], [-77.15, 48.75], [-77.25, 49.0]]]]}, "2010-07-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, 49.0], [-77.04, 49.5], [-77.25, 50.0], [-77.03, 50.53], [-76.68, 50.68], [-76.53, 51.03], [-76.0, 51.25], [-75.75, 51.15], [-75.68, 51.18], [-75.53, 51.53], [-75.0, 51.75], [-74.75, 51.65], [-74.68, 51.68], [-74.53, 52.03], [-74.0, 52.25], [-73.47, 52.03], [-73.3, 51.62], [-73.18, 51.68], [-73.03, 52.03], [-72.5, 52.25], [-71.97, 52.03], [-71.82, 51.68], [-71.75, 51.65], [-71.5, 51.75], [-70.97, 51.53], [-70.82, 51.18], [-70.75, 51.15], [-70.5, 51.25], [-69.97, 51.03], [-69.82, 50.68], [-69.47, 50.53], [-69.25, 50.0], [-69.47, 49.47], [-70.0, 49.25], [-70.25, 49.35], [-70.32, 49.32], [-70.35, 49.25], [-70.32, 49.18], [-69.97, 49.03], [-69.75, 48.5], [-69.97, 47.97], [-70.5, 47.75], [-70.75, 47.85], [-71.0, 47.75], [-71.5, 47.96], [-72.0, 47.75], [-72.5, 47.96], [-73.0, 47.75], [-73.25, 47.85], [-73.32, 47.82], [-73.47, 47.47], [-74.0, 47.25], [-74.25, 47.35], [-74.5, 47.25], [-74.75, 47.35], [-75.0, 47.25], [-75.25, 47.35], [-75.5, 47.25], [-75.75, 47.35], [-76.0, 47.25], [-76.25, 47.35], [-76.5, 47.25], [-76.75, 47.35], [-77.0, 47.25], [-77.53, 47.47], [-77.75, 48.0], [-77.53, 48.53], [-77.18, 48.68], [-77.15, 48.75], [-77.25, 49.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.628368805798345}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.577991018522943}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.370815091875556, 12.219198818442237, 12.724888929562724]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.035707871866919, 10.965153382782944, 10.885443245037607]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.672362876820949, -4.814901760586353, -4.246708418161526]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.628368805798345, -6.541714723966379, -5.3091523067978414]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7665928661687966, -1.8393832180537864, -1.6510975627025806]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.229980788928544, -2.5104372540328552, -1.9395844811801972]}}