{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:22.794196", "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-May-15_to_2016-May-17_283.0_48.5"}, "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": 2016050000449}, "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": "May 15 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 17 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": 209848.7129859192}, "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": 48.5}, "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": 283.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 287.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.65, 47.25], [-79.75, 47.5], [-79.53, 48.03], [-79.18, 48.18], [-79.15, 48.25], [-79.25, 48.5], [-79.03, 49.03], [-78.68, 49.18], [-78.65, 49.25], [-78.75, 49.5], [-78.53, 50.03], [-78.18, 50.18], [-78.15, 50.25], [-78.25, 50.5], [-78.15, 50.75], [-78.18, 50.82], [-78.53, 50.97], [-78.75, 51.5], [-78.53, 52.03], [-78.0, 52.25], [-77.75, 52.15], [-77.5, 52.25], [-76.97, 52.03], [-76.82, 51.68], [-76.75, 51.65], [-76.5, 51.75], [-76.25, 51.65], [-76.0, 51.75], [-75.47, 51.53], [-75.32, 51.18], [-74.97, 51.03], [-74.75, 50.5], [-74.85, 50.25], [-74.75, 50.0], [-74.85, 49.75], [-74.82, 49.68], [-74.47, 49.53], [-74.25, 49.0], [-74.35, 48.75], [-74.25, 48.5], [-74.35, 48.25], [-74.32, 48.18], [-73.97, 48.03], [-73.82, 47.68], [-73.47, 47.53], [-73.32, 47.18], [-73.25, 47.15], [-73.0, 47.25], [-72.47, 47.03], [-72.25, 46.5], [-72.47, 45.97], [-73.0, 45.75], [-73.25, 45.85], [-73.32, 45.82], [-73.46, 45.5], [-73.25, 45.0], [-73.47, 44.47], [-74.0, 44.25], [-74.25, 44.35], [-74.5, 44.25], [-74.75, 44.35], [-75.0, 44.25], [-75.25, 44.35], [-75.5, 44.25], [-76.03, 44.47], [-76.18, 44.82], [-76.25, 44.85], [-76.5, 44.75], [-76.75, 44.85], [-77.0, 44.75], [-77.25, 44.85], [-77.5, 44.75], [-77.75, 44.85], [-78.0, 44.75], [-78.53, 44.97], [-78.68, 45.32], [-79.03, 45.47], [-79.18, 45.82], [-79.53, 45.97], [-79.75, 46.5], [-79.65, 46.75], [-79.75, 47.0], [-79.65, 47.25]]]]}, "2016-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.65, 47.25], [-79.75, 47.5], [-79.53, 48.03], [-79.18, 48.18], [-79.15, 48.25], [-79.25, 48.5], [-79.03, 49.03], [-78.68, 49.18], [-78.65, 49.25], [-78.75, 49.5], [-78.53, 50.03], [-78.18, 50.18], [-78.15, 50.25], [-78.25, 50.5], [-78.15, 50.75], [-78.18, 50.82], [-78.53, 50.97], [-78.75, 51.5], [-78.53, 52.03], [-78.0, 52.25], [-77.75, 52.15], [-77.5, 52.25], [-76.97, 52.03], [-76.82, 51.68], [-76.75, 51.65], [-76.5, 51.75], [-76.25, 51.65], [-76.0, 51.75], [-75.47, 51.53], [-75.32, 51.18], [-74.97, 51.03], [-74.75, 50.5], [-74.85, 50.25], [-74.75, 50.0], [-74.85, 49.75], [-74.82, 49.68], [-74.47, 49.53], [-74.25, 49.0], [-74.35, 48.75], [-74.25, 48.5], [-74.35, 48.25], [-74.32, 48.18], [-73.97, 48.03], [-73.82, 47.68], [-73.47, 47.53], [-73.32, 47.18], [-73.25, 47.15], [-73.0, 47.25], [-72.47, 47.03], [-72.25, 46.5], [-72.47, 45.97], [-73.0, 45.75], [-73.25, 45.85], [-73.32, 45.82], [-73.46, 45.5], [-73.25, 45.0], [-73.47, 44.47], [-74.0, 44.25], [-74.25, 44.35], [-74.5, 44.25], [-74.75, 44.35], [-75.0, 44.25], [-75.25, 44.35], [-75.5, 44.25], [-76.03, 44.47], [-76.18, 44.82], [-76.25, 44.85], [-76.5, 44.75], [-76.75, 44.85], [-77.0, 44.75], [-77.25, 44.85], [-77.5, 44.75], [-77.75, 44.85], [-78.0, 44.75], [-78.53, 44.97], [-78.68, 45.32], [-79.03, 45.47], [-79.18, 45.82], [-79.53, 45.97], [-79.75, 46.5], [-79.65, 46.75], [-79.75, 47.0], [-79.65, 47.25]]]]}, "2016-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-79.65, 47.25], [-79.75, 47.5], [-79.53, 48.03], [-79.18, 48.18], [-79.15, 48.25], [-79.25, 48.5], [-79.03, 49.03], [-78.68, 49.18], [-78.65, 49.25], [-78.75, 49.5], [-78.53, 50.03], [-78.18, 50.18], [-78.15, 50.25], [-78.25, 50.5], [-78.15, 50.75], [-78.18, 50.82], [-78.53, 50.97], [-78.75, 51.5], [-78.53, 52.03], [-78.0, 52.25], [-77.75, 52.15], [-77.5, 52.25], [-76.97, 52.03], [-76.82, 51.68], [-76.75, 51.65], [-76.5, 51.75], [-76.25, 51.65], [-76.0, 51.75], [-75.47, 51.53], [-75.32, 51.18], [-74.97, 51.03], [-74.75, 50.5], [-74.85, 50.25], [-74.75, 50.0], [-74.85, 49.75], [-74.82, 49.68], [-74.47, 49.53], [-74.25, 49.0], [-74.35, 48.75], [-74.25, 48.5], [-74.35, 48.25], [-74.32, 48.18], [-73.97, 48.03], [-73.82, 47.68], [-73.47, 47.53], [-73.32, 47.18], [-73.25, 47.15], [-73.0, 47.25], [-72.47, 47.03], [-72.25, 46.5], [-72.47, 45.97], [-73.0, 45.75], [-73.25, 45.85], [-73.32, 45.82], [-73.46, 45.5], [-73.25, 45.0], [-73.47, 44.47], [-74.0, 44.25], [-74.25, 44.35], [-74.5, 44.25], [-74.75, 44.35], [-75.0, 44.25], [-75.25, 44.35], [-75.5, 44.25], [-76.03, 44.47], [-76.18, 44.82], [-76.25, 44.85], [-76.5, 44.75], [-76.75, 44.85], [-77.0, 44.75], [-77.25, 44.85], [-77.5, 44.75], [-77.75, 44.85], [-78.0, 44.75], [-78.53, 44.97], [-78.68, 45.32], [-79.03, 45.47], [-79.18, 45.82], [-79.53, 45.97], [-79.75, 46.5], [-79.65, 46.75], [-79.75, 47.0], [-79.65, 47.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -11.40774867024976}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.993056697861842}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.344754677936237, 0.6955347562218321, 3.1404758371980392]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-3.650513200353032, -2.763946331153136, -0.2305809076160017]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.150415935040442, -9.036282894878543, -6.792471263666539]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-11.40774867024976, -11.400670777852497, -8.447727366008223]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8663565043505477, -2.105400517154697, -1.5611050371052166]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3505352750131734, -2.6775553288182614, -1.8801244710557319]}}