{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:55.762061", "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-24_to_2014-Mar-26_301.0_47.0"}, "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": 2014030000974}, "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 24 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 2014"}, "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": 70737.1531403631}, "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"]}, "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": ["Gulf of St. Lawrence"]}, "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": 47.0}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 297.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 48.53], [-62.5, 48.75], [-62.25, 48.65], [-62.0, 48.75], [-61.75, 48.65], [-61.68, 48.68], [-61.53, 49.03], [-61.0, 49.25], [-60.75, 49.15], [-60.5, 49.25], [-60.25, 49.15], [-60.18, 49.18], [-60.03, 49.53], [-59.68, 49.68], [-59.53, 50.03], [-59.0, 50.25], [-58.47, 50.03], [-58.25, 49.5], [-58.35, 49.25], [-58.25, 49.0], [-58.35, 48.75], [-58.25, 48.5], [-58.37, 48.2], [-57.97, 48.03], [-57.75, 47.5], [-57.85, 47.25], [-57.75, 47.0], [-57.97, 46.47], [-58.32, 46.32], [-58.47, 45.97], [-59.0, 45.75], [-59.25, 45.85], [-59.5, 45.75], [-59.75, 45.85], [-60.0, 45.75], [-60.25, 45.85], [-60.5, 45.75], [-61.03, 45.97], [-61.18, 46.32], [-61.53, 46.47], [-61.68, 46.82], [-61.75, 46.85], [-62.0, 46.75], [-62.25, 46.85], [-62.5, 46.75], [-63.03, 46.97], [-63.25, 47.5], [-63.15, 47.75], [-63.25, 48.0], [-63.03, 48.53]]]]}, "2014-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 48.53], [-62.5, 48.75], [-62.25, 48.65], [-62.0, 48.75], [-61.75, 48.65], [-61.68, 48.68], [-61.53, 49.03], [-61.0, 49.25], [-60.75, 49.15], [-60.5, 49.25], [-60.25, 49.15], [-60.18, 49.18], [-60.03, 49.53], [-59.68, 49.68], [-59.53, 50.03], [-59.0, 50.25], [-58.47, 50.03], [-58.25, 49.5], [-58.35, 49.25], [-58.25, 49.0], [-58.35, 48.75], [-58.25, 48.5], [-58.37, 48.2], [-57.97, 48.03], [-57.75, 47.5], [-57.85, 47.25], [-57.75, 47.0], [-57.97, 46.47], [-58.32, 46.32], [-58.47, 45.97], [-59.0, 45.75], [-59.25, 45.85], [-59.5, 45.75], [-59.75, 45.85], [-60.0, 45.75], [-60.25, 45.85], [-60.5, 45.75], [-61.03, 45.97], [-61.18, 46.32], [-61.53, 46.47], [-61.68, 46.82], [-61.75, 46.85], [-62.0, 46.75], [-62.25, 46.85], [-62.5, 46.75], [-63.03, 46.97], [-63.25, 47.5], [-63.15, 47.75], [-63.25, 48.0], [-63.03, 48.53]]]]}, "2014-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.03, 48.53], [-62.5, 48.75], [-62.25, 48.65], [-62.0, 48.75], [-61.75, 48.65], [-61.68, 48.68], [-61.53, 49.03], [-61.0, 49.25], [-60.75, 49.15], [-60.5, 49.25], [-60.25, 49.15], [-60.18, 49.18], [-60.03, 49.53], [-59.68, 49.68], [-59.53, 50.03], [-59.0, 50.25], [-58.47, 50.03], [-58.25, 49.5], [-58.35, 49.25], [-58.25, 49.0], [-58.35, 48.75], [-58.25, 48.5], [-58.37, 48.2], [-57.97, 48.03], [-57.75, 47.5], [-57.85, 47.25], [-57.75, 47.0], [-57.97, 46.47], [-58.32, 46.32], [-58.47, 45.97], [-59.0, 45.75], [-59.25, 45.85], [-59.5, 45.75], [-59.75, 45.85], [-60.0, 45.75], [-60.25, 45.85], [-60.5, 45.75], [-61.03, 45.97], [-61.18, 46.32], [-61.53, 46.47], [-61.68, 46.82], [-61.75, 46.85], [-62.0, 46.75], [-62.25, 46.85], [-62.5, 46.75], [-63.03, 46.97], [-63.25, 47.5], [-63.15, 47.75], [-63.25, 48.0], [-63.03, 48.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.285587271781026}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.329469331252976}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-7.0734470822199, -8.546331090947206, -6.8001815569219275]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.541146193135262, -9.923295593791352, -9.404867616393801]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.744305310198113, -6.442180589184052, -4.801922094376761]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.69001300148733, -7.285587271781026, -6.722639679180418]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7589398626565054, -2.5132284623490193, -1.9389020352550244]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.14443752129288, -3.073016711124955, -2.466620634882408]}}