{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:55.477019", "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-Mar-22_to_2014-Mar-25_282.0_64.0"}, "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": 2014030000912}, "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 22 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 25 2014"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 74914.5013404466}, "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": ["Hudson Strait", "The Northwestern Passages"]}, "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": 64.0}, "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": 282.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "282.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 279.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 286.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 63.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 67.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.53, 64.53], [-80.0, 64.75], [-79.75, 64.65], [-79.68, 64.68], [-79.53, 65.03], [-79.0, 65.25], [-78.75, 65.15], [-78.5, 65.25], [-78.25, 65.15], [-78.0, 65.25], [-77.47, 65.03], [-77.25, 64.5], [-77.35, 64.25], [-77.25, 64.0], [-77.47, 63.47], [-77.82, 63.32], [-77.97, 62.97], [-78.5, 62.75], [-78.75, 62.85], [-79.0, 62.75], [-79.25, 62.85], [-79.5, 62.75], [-79.75, 62.85], [-80.0, 62.75], [-80.53, 62.97], [-80.75, 63.5], [-80.65, 63.75], [-80.75, 64.0], [-80.53, 64.53]]]]}, "2014-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.03, 64.53], [-80.5, 64.75], [-80.25, 64.65], [-80.0, 64.75], [-79.75, 64.65], [-79.68, 64.68], [-79.53, 65.03], [-79.18, 65.18], [-79.03, 65.53], [-78.68, 65.68], [-78.53, 66.03], [-78.0, 66.25], [-77.75, 66.15], [-77.5, 66.25], [-77.25, 66.15], [-77.18, 66.18], [-77.03, 66.53], [-76.68, 66.68], [-76.53, 67.03], [-76.0, 67.25], [-75.75, 67.15], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-74.25, 67.15], [-74.18, 67.18], [-74.03, 67.53], [-73.5, 67.75], [-72.97, 67.53], [-72.75, 67.0], [-72.97, 66.47], [-73.32, 66.32], [-73.35, 66.25], [-73.25, 66.0], [-73.35, 65.75], [-73.25, 65.5], [-73.47, 64.97], [-74.0, 64.75], [-74.25, 64.85], [-74.32, 64.82], [-74.47, 64.47], [-74.87, 64.3], [-74.75, 64.0], [-74.97, 63.47], [-75.32, 63.32], [-75.47, 62.97], [-76.0, 62.75], [-76.25, 62.85], [-76.5, 62.75], [-76.75, 62.85], [-77.0, 62.75], [-77.25, 62.85], [-77.5, 62.75], [-77.75, 62.85], [-78.0, 62.75], [-78.25, 62.85], [-78.5, 62.75], [-78.75, 62.85], [-79.0, 62.75], [-79.25, 62.85], [-79.5, 62.75], [-79.75, 62.85], [-80.0, 62.75], [-80.25, 62.85], [-80.5, 62.75], [-81.03, 62.97], [-81.25, 63.5], [-81.15, 63.75], [-81.25, 64.0], [-81.03, 64.53]]]]}, "2014-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.03, 64.53], [-80.5, 64.75], [-80.25, 64.65], [-80.0, 64.75], [-79.75, 64.65], [-79.68, 64.68], [-79.53, 65.03], [-79.18, 65.18], [-79.03, 65.53], [-78.68, 65.68], [-78.53, 66.03], [-78.0, 66.25], [-77.75, 66.15], [-77.5, 66.25], [-77.25, 66.15], [-77.18, 66.18], [-77.03, 66.53], [-76.68, 66.68], [-76.53, 67.03], [-76.0, 67.25], [-75.75, 67.15], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-74.25, 67.15], [-74.18, 67.18], [-74.03, 67.53], [-73.5, 67.75], [-72.97, 67.53], [-72.75, 67.0], [-72.97, 66.47], [-73.32, 66.32], [-73.35, 66.25], [-73.25, 66.0], [-73.35, 65.75], [-73.25, 65.5], [-73.47, 64.97], [-74.0, 64.75], [-74.25, 64.85], [-74.32, 64.82], [-74.47, 64.47], [-74.87, 64.3], [-74.75, 64.0], [-74.97, 63.47], [-75.32, 63.32], [-75.47, 62.97], [-76.0, 62.75], [-76.25, 62.85], [-76.5, 62.75], [-76.75, 62.85], [-77.0, 62.75], [-77.25, 62.85], [-77.5, 62.75], [-77.75, 62.85], [-78.0, 62.75], [-78.25, 62.85], [-78.5, 62.75], [-78.75, 62.85], [-79.0, 62.75], [-79.25, 62.85], [-79.5, 62.75], [-79.75, 62.85], [-80.0, 62.75], [-80.25, 62.85], [-80.5, 62.75], [-81.03, 62.97], [-81.25, 63.5], [-81.15, 63.75], [-81.25, 64.0], [-81.03, 64.53]]]]}, "2014-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-81.03, 64.53], [-80.5, 64.75], [-80.25, 64.65], [-80.0, 64.75], [-79.75, 64.65], [-79.68, 64.68], [-79.53, 65.03], [-79.18, 65.18], [-79.03, 65.53], [-78.68, 65.68], [-78.53, 66.03], [-78.0, 66.25], [-77.75, 66.15], [-77.5, 66.25], [-77.25, 66.15], [-77.18, 66.18], [-77.03, 66.53], [-76.68, 66.68], [-76.53, 67.03], [-76.0, 67.25], [-75.75, 67.15], [-75.5, 67.25], [-75.25, 67.15], [-75.0, 67.25], [-74.75, 67.15], [-74.5, 67.25], [-74.25, 67.15], [-74.18, 67.18], [-74.03, 67.53], [-73.5, 67.75], [-72.97, 67.53], [-72.75, 67.0], [-72.97, 66.47], [-73.32, 66.32], [-73.35, 66.25], [-73.25, 66.0], [-73.35, 65.75], [-73.25, 65.5], [-73.47, 64.97], [-74.0, 64.75], [-74.25, 64.85], [-74.32, 64.82], [-74.47, 64.47], [-74.87, 64.3], [-74.75, 64.0], [-74.97, 63.47], [-75.32, 63.32], [-75.47, 62.97], [-76.0, 62.75], [-76.25, 62.85], [-76.5, 62.75], [-76.75, 62.85], [-77.0, 62.75], [-77.25, 62.85], [-77.5, 62.75], [-77.75, 62.85], [-78.0, 62.75], [-78.25, 62.85], [-78.5, 62.75], [-78.75, 62.85], [-79.0, 62.75], [-79.25, 62.85], [-79.5, 62.75], [-79.75, 62.85], [-80.0, 62.75], [-80.25, 62.85], [-80.5, 62.75], [-81.03, 62.97], [-81.25, 63.5], [-81.15, 63.75], [-81.25, 64.0], [-81.03, 64.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.99962666153516}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.857610983895844}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-25.417278931171296, -26.655503397822088, -27.15991987943184, -26.486824316552656]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-26.59741928316501, -29.45597771673161, -30.12375017516885, -29.267383404745402]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.084163047554074, -6.518900922817704, -7.300978437066162, -6.915784736296659]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.792528709175656, -7.857162980457559, -8.99962666153516, -8.77001865995436]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.368583465292266, -1.4064097989348103, -1.534533454875629, -1.4269559026576957]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.507203990372738, -1.720046555486208, -1.808509069885221, -1.8303066997748516]}}