{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:29:15.853475", "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": "2022-Feb-13_to_2022-Feb-15_288.5_49.5"}, "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": 2022020000607}, "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": "February 13 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 15 2022"}, "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": 83429.63978856173}, "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": 49.5}, "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": 288.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "288.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 49.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 52.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 50.5], [-73.53, 51.03], [-73.18, 51.18], [-73.15, 51.25], [-73.25, 51.5], [-73.03, 52.03], [-72.5, 52.25], [-72.25, 52.15], [-72.0, 52.25], [-71.75, 52.15], [-71.68, 52.18], [-71.53, 52.53], [-71.0, 52.75], [-70.75, 52.65], [-70.5, 52.75], [-70.25, 52.65], [-70.0, 52.75], [-69.75, 52.65], [-69.68, 52.68], [-69.53, 53.03], [-69.0, 53.25], [-68.47, 53.03], [-68.32, 52.68], [-68.25, 52.65], [-68.18, 52.68], [-68.03, 53.03], [-67.5, 53.25], [-66.97, 53.03], [-66.75, 52.5], [-66.85, 52.25], [-66.75, 52.0], [-66.97, 51.47], [-67.32, 51.32], [-67.35, 51.25], [-67.25, 51.0], [-67.47, 50.47], [-68.0, 50.25], [-68.25, 50.35], [-68.5, 50.25], [-68.75, 50.35], [-69.0, 50.25], [-69.25, 50.35], [-69.32, 50.32], [-69.35, 50.25], [-69.25, 50.0], [-69.47, 49.47], [-70.0, 49.25], [-70.25, 49.35], [-70.32, 49.32], [-70.47, 48.97], [-71.0, 48.75], [-71.25, 48.85], [-71.5, 48.75], [-72.03, 48.97], [-72.2, 49.38], [-72.5, 49.25], [-73.03, 49.47], [-73.18, 49.82], [-73.53, 49.97], [-73.75, 50.5]]]]}, "2022-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 50.5], [-73.53, 51.03], [-73.18, 51.18], [-73.15, 51.25], [-73.25, 51.5], [-73.03, 52.03], [-72.5, 52.25], [-72.25, 52.15], [-72.0, 52.25], [-71.75, 52.15], [-71.68, 52.18], [-71.53, 52.53], [-71.0, 52.75], [-70.75, 52.65], [-70.5, 52.75], [-70.25, 52.65], [-70.0, 52.75], [-69.75, 52.65], [-69.68, 52.68], [-69.53, 53.03], [-69.0, 53.25], [-68.47, 53.03], [-68.32, 52.68], [-68.25, 52.65], [-68.18, 52.68], [-68.03, 53.03], [-67.5, 53.25], [-66.97, 53.03], [-66.75, 52.5], [-66.85, 52.25], [-66.75, 52.0], [-66.97, 51.47], [-67.32, 51.32], [-67.35, 51.25], [-67.25, 51.0], [-67.47, 50.47], [-68.0, 50.25], [-68.25, 50.35], [-68.5, 50.25], [-68.75, 50.35], [-69.0, 50.25], [-69.25, 50.35], [-69.32, 50.32], [-69.35, 50.25], [-69.25, 50.0], [-69.47, 49.47], [-70.0, 49.25], [-70.25, 49.35], [-70.32, 49.32], [-70.47, 48.97], [-71.0, 48.75], [-71.25, 48.85], [-71.5, 48.75], [-72.03, 48.97], [-72.2, 49.38], [-72.5, 49.25], [-73.03, 49.47], [-73.18, 49.82], [-73.53, 49.97], [-73.75, 50.5]]]]}, "2022-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.75, 50.5], [-73.53, 51.03], [-73.18, 51.18], [-73.15, 51.25], [-73.25, 51.5], [-73.03, 52.03], [-72.5, 52.25], [-72.25, 52.15], [-72.0, 52.25], [-71.75, 52.15], [-71.68, 52.18], [-71.53, 52.53], [-71.0, 52.75], [-70.75, 52.65], [-70.5, 52.75], [-70.25, 52.65], [-70.0, 52.75], [-69.75, 52.65], [-69.68, 52.68], [-69.53, 53.03], [-69.0, 53.25], [-68.47, 53.03], [-68.32, 52.68], [-68.25, 52.65], [-68.18, 52.68], [-68.03, 53.03], [-67.5, 53.25], [-66.97, 53.03], [-66.75, 52.5], [-66.85, 52.25], [-66.75, 52.0], [-66.97, 51.47], [-67.32, 51.32], [-67.35, 51.25], [-67.25, 51.0], [-67.47, 50.47], [-68.0, 50.25], [-68.25, 50.35], [-68.5, 50.25], [-68.75, 50.35], [-69.0, 50.25], [-69.25, 50.35], [-69.32, 50.32], [-69.35, 50.25], [-69.25, 50.0], [-69.47, 49.47], [-70.0, 49.25], [-70.25, 49.35], [-70.32, 49.32], [-70.47, 48.97], [-71.0, 48.75], [-71.25, 48.85], [-71.5, 48.75], [-72.03, 48.97], [-72.2, 49.38], [-72.5, 49.25], [-73.03, 49.47], [-73.18, 49.82], [-73.53, 49.97], [-73.75, 50.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.577085068369541}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.922027492990637}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-28.113413778478957, -29.201610994711018, -27.141881060201797]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-30.77228801013385, -31.037045783069743, -30.046153291636415]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.567836827922223, -10.97597511894234, -9.222270532107357]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-11.084901738458626, -12.577085068369541, -10.088060819016732]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.398083641469338, -1.59770669477244, -1.348434322799931]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5783468831273488, -1.8382186533760838, -1.4910824939748548]}}