{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:20:03.119973", "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": "2019-Jul-10_to_2019-Jul-13_301.0_47.5"}, "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": 2019070000439}, "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 10 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 13 2019"}, "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": 99943.40877181769}, "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", "North Atlantic Ocean"]}, "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": 47.5}, "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": 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": 297.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 304.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.75}, "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": {"2019-07-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.75, 48.5], [-62.53, 49.03], [-62.0, 49.25], [-61.75, 49.15], [-61.68, 49.18], [-61.53, 49.53], [-61.0, 49.75], [-60.75, 49.65], [-60.5, 49.75], [-60.25, 49.65], [-60.18, 49.68], [-60.03, 50.03], [-59.5, 50.25], [-59.0, 50.04], [-58.5, 50.25], [-58.25, 50.15], [-58.0, 50.25], [-57.47, 50.03], [-57.25, 49.5], [-57.47, 48.97], [-58.0, 48.75], [-57.75, 48.65], [-57.5, 48.75], [-57.25, 48.65], [-57.0, 48.75], [-56.75, 48.65], [-56.5, 48.75], [-55.97, 48.53], [-55.75, 48.0], [-55.97, 47.47], [-56.5, 47.25], [-56.25, 47.15], [-56.0, 47.25], [-55.47, 47.03], [-55.25, 46.5], [-55.47, 45.97], [-55.82, 45.82], [-55.97, 45.47], [-56.5, 45.25], [-56.75, 45.35], [-57.0, 45.25], [-57.25, 45.35], [-57.5, 45.25], [-57.75, 45.35], [-58.0, 45.25], [-58.25, 45.35], [-58.5, 45.25], [-59.03, 45.47], [-59.18, 45.82], [-59.25, 45.85], [-59.5, 45.75], [-60.03, 45.97], [-60.18, 46.32], [-60.53, 46.47], [-60.68, 46.82], [-60.75, 46.85], [-61.0, 46.75], [-61.53, 46.97], [-61.68, 47.32], [-62.03, 47.47], [-62.18, 47.82], [-62.53, 47.97], [-62.75, 48.5]], [[-58.25, 48.85], [-58.32, 48.82], [-58.37, 48.7], [-58.25, 48.65], [-58.0, 48.75], [-58.25, 48.85]], [[-56.75, 47.35], [-57.0, 47.25], [-56.75, 47.15], [-56.5, 47.25], [-56.75, 47.35]], [[-57.25, 47.35], [-57.37, 47.3], [-57.32, 47.18], [-57.25, 47.15], [-57.0, 47.25], [-57.25, 47.35]]]]}, "2019-07-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.75, 48.5], [-62.53, 49.03], [-62.0, 49.25], [-61.75, 49.15], [-61.68, 49.18], [-61.53, 49.53], [-61.0, 49.75], [-60.75, 49.65], [-60.5, 49.75], [-60.25, 49.65], [-60.18, 49.68], [-60.03, 50.03], [-59.5, 50.25], [-59.0, 50.04], [-58.5, 50.25], [-58.25, 50.15], [-58.0, 50.25], [-57.47, 50.03], [-57.25, 49.5], [-57.47, 48.97], [-58.0, 48.75], [-57.75, 48.65], [-57.5, 48.75], [-57.25, 48.65], [-57.0, 48.75], [-56.75, 48.65], [-56.5, 48.75], [-55.97, 48.53], [-55.75, 48.0], [-55.97, 47.47], [-56.5, 47.25], [-56.25, 47.15], [-56.0, 47.25], [-55.47, 47.03], [-55.25, 46.5], [-55.47, 45.97], [-55.82, 45.82], [-55.97, 45.47], [-56.5, 45.25], [-56.75, 45.35], [-57.0, 45.25], [-57.25, 45.35], [-57.5, 45.25], [-57.75, 45.35], [-58.0, 45.25], [-58.25, 45.35], [-58.5, 45.25], [-59.03, 45.47], [-59.18, 45.82], [-59.25, 45.85], [-59.5, 45.75], [-60.03, 45.97], [-60.18, 46.32], [-60.53, 46.47], [-60.68, 46.82], [-60.75, 46.85], [-61.0, 46.75], [-61.53, 46.97], [-61.68, 47.32], [-62.03, 47.47], [-62.18, 47.82], [-62.53, 47.97], [-62.75, 48.5]], [[-58.25, 48.85], [-58.32, 48.82], [-58.37, 48.7], [-58.25, 48.65], [-58.0, 48.75], [-58.25, 48.85]], [[-56.75, 47.35], [-57.0, 47.25], [-56.75, 47.15], [-56.5, 47.25], [-56.75, 47.35]], [[-57.25, 47.35], [-57.37, 47.3], [-57.32, 47.18], [-57.25, 47.15], [-57.0, 47.25], [-57.25, 47.35]]]]}, "2019-07-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.75, 48.5], [-62.53, 49.03], [-62.0, 49.25], [-61.75, 49.15], [-61.68, 49.18], [-61.53, 49.53], [-61.0, 49.75], [-60.75, 49.65], [-60.5, 49.75], [-60.25, 49.65], [-60.18, 49.68], [-60.03, 50.03], [-59.5, 50.25], [-59.0, 50.04], [-58.5, 50.25], [-58.25, 50.15], [-58.0, 50.25], [-57.47, 50.03], [-57.25, 49.5], [-57.47, 48.97], [-58.0, 48.75], [-57.75, 48.65], [-57.5, 48.75], [-57.25, 48.65], [-57.0, 48.75], [-56.75, 48.65], [-56.5, 48.75], [-55.97, 48.53], [-55.75, 48.0], [-55.97, 47.47], [-56.5, 47.25], [-56.25, 47.15], [-56.0, 47.25], [-55.47, 47.03], [-55.25, 46.5], [-55.47, 45.97], [-55.82, 45.82], [-55.97, 45.47], [-56.5, 45.25], [-56.75, 45.35], [-57.0, 45.25], [-57.25, 45.35], [-57.5, 45.25], [-57.75, 45.35], [-58.0, 45.25], [-58.25, 45.35], [-58.5, 45.25], [-59.03, 45.47], [-59.18, 45.82], [-59.25, 45.85], [-59.5, 45.75], [-60.03, 45.97], [-60.18, 46.32], [-60.53, 46.47], [-60.68, 46.82], [-60.75, 46.85], [-61.0, 46.75], [-61.53, 46.97], [-61.68, 47.32], [-62.03, 47.47], [-62.18, 47.82], [-62.53, 47.97], [-62.75, 48.5]], [[-58.25, 48.85], [-58.32, 48.82], [-58.37, 48.7], [-58.25, 48.65], [-58.0, 48.75], [-58.25, 48.85]], [[-56.75, 47.35], [-57.0, 47.25], [-56.75, 47.15], [-56.5, 47.25], [-56.75, 47.35]], [[-57.25, 47.35], [-57.37, 47.3], [-57.32, 47.18], [-57.25, 47.15], [-57.0, 47.25], [-57.25, 47.35]]]]}, "2019-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-59.0, 48.25], [-58.47, 48.03], [-58.25, 47.5], [-58.47, 46.97], [-59.0, 46.75], [-59.53, 46.97], [-59.75, 47.5], [-59.53, 48.03], [-59.0, 48.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.10737483762631}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.827481583707786}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [11.120983108607959, 10.88715091098328, 11.309390864854038, 11.970825309717156]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.829877300164583, 9.721337375143491, 10.312151807634109, 11.970825309717156]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6654775433714946, -3.0518269801282067, -2.77544343171776, -2.3329277871907834]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.10737483762631, -5.02019033167727, -3.751607359320701, -2.3329277871907834]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5320565836729783, -1.7623224786504883, -1.5847968776924848, -1.3156891238116646]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0861950344105322, -2.155246554113214, -1.929298499271653, -1.3156891238116646]}}