{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:52.054340", "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-Mar-02_to_2016-Mar-04_290.0_49.0"}, "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": 2016030000098}, "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": "March 02 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 04 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": 55465.65480457888}, "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": 49.0}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 48.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-03-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, 49.97], [-73.25, 50.5], [-73.03, 51.03], [-72.5, 51.25], [-72.25, 51.15], [-72.0, 51.25], [-71.75, 51.15], [-71.5, 51.25], [-71.25, 51.15], [-71.18, 51.18], [-71.03, 51.53], [-70.5, 51.75], [-70.0, 51.54], [-69.5, 51.75], [-69.25, 51.65], [-69.0, 51.75], [-68.47, 51.53], [-68.32, 51.18], [-68.25, 51.15], [-68.0, 51.25], [-67.47, 51.03], [-67.25, 50.5], [-67.35, 50.25], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-69.0, 48.75], [-69.25, 48.85], [-69.32, 48.82], [-69.47, 48.47], [-70.0, 48.25], [-70.53, 48.47], [-70.68, 48.82], [-71.03, 48.97], [-71.18, 49.32], [-71.25, 49.35], [-71.5, 49.25], [-72.03, 49.47], [-72.18, 49.82], [-72.25, 49.85], [-72.5, 49.75], [-73.03, 49.97]]]]}, "2016-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, 49.97], [-73.25, 50.5], [-73.03, 51.03], [-72.5, 51.25], [-72.25, 51.15], [-72.0, 51.25], [-71.75, 51.15], [-71.5, 51.25], [-71.25, 51.15], [-71.18, 51.18], [-71.03, 51.53], [-70.5, 51.75], [-70.0, 51.54], [-69.5, 51.75], [-69.25, 51.65], [-69.0, 51.75], [-68.47, 51.53], [-68.32, 51.18], [-68.25, 51.15], [-68.0, 51.25], [-67.47, 51.03], [-67.25, 50.5], [-67.35, 50.25], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-69.0, 48.75], [-69.25, 48.85], [-69.32, 48.82], [-69.47, 48.47], [-70.0, 48.25], [-70.53, 48.47], [-70.68, 48.82], [-71.03, 48.97], [-71.18, 49.32], [-71.25, 49.35], [-71.5, 49.25], [-72.03, 49.47], [-72.18, 49.82], [-72.25, 49.85], [-72.5, 49.75], [-73.03, 49.97]]]]}, "2016-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-73.03, 49.97], [-73.25, 50.5], [-73.03, 51.03], [-72.5, 51.25], [-72.25, 51.15], [-72.0, 51.25], [-71.75, 51.15], [-71.5, 51.25], [-71.25, 51.15], [-71.18, 51.18], [-71.03, 51.53], [-70.5, 51.75], [-70.0, 51.54], [-69.5, 51.75], [-69.25, 51.65], [-69.0, 51.75], [-68.47, 51.53], [-68.32, 51.18], [-68.25, 51.15], [-68.0, 51.25], [-67.47, 51.03], [-67.25, 50.5], [-67.35, 50.25], [-67.25, 50.0], [-67.35, 49.75], [-67.25, 49.5], [-67.47, 48.97], [-68.0, 48.75], [-68.25, 48.85], [-68.5, 48.75], [-68.75, 48.85], [-69.0, 48.75], [-69.25, 48.85], [-69.32, 48.82], [-69.47, 48.47], [-70.0, 48.25], [-70.53, 48.47], [-70.68, 48.82], [-71.03, 48.97], [-71.18, 49.32], [-71.25, 49.35], [-71.5, 49.25], [-72.03, 49.47], [-72.18, 49.82], [-72.25, 49.85], [-72.5, 49.75], [-73.03, 49.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.274704616720015}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.780828368218078}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-22.67927748264168, -22.758997439395813, -22.285778233084415]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-25.506495024865103, -24.691459660688224, -24.358424779688363]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-9.68507442558076, -9.899844343564837, -9.75756633550863]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.538031207193256, -11.274704616720015, -10.291313850426832]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3921338473587228, -1.4458771325388267, -1.449227863526033]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4986172542343479, -1.7645669707333427, -1.607119499657545]}}