{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:14.713962", "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": "2015-Jun-27_to_2015-Jun-29_284.0_40.5"}, "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": 2015060001052}, "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": "June 27 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 29 2015"}, "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": 73446.98720658835}, "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": ["United States"]}, "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": ["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": 40.5}, "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": 284.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "284.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 281.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 284.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 37.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-06-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.65, 39.75], [-78.75, 40.0], [-78.65, 40.25], [-78.75, 40.5], [-78.53, 41.03], [-78.18, 41.18], [-78.15, 41.25], [-78.25, 41.5], [-78.03, 42.03], [-77.5, 42.25], [-77.0, 42.04], [-76.5, 42.25], [-76.25, 42.15], [-76.0, 42.25], [-75.47, 42.03], [-75.25, 41.5], [-75.35, 41.25], [-75.25, 41.0], [-75.35, 40.75], [-75.32, 40.68], [-74.97, 40.53], [-74.75, 40.0], [-74.85, 39.75], [-74.75, 39.5], [-74.97, 38.97], [-75.5, 38.75], [-75.75, 38.85], [-75.82, 38.82], [-75.97, 38.47], [-76.5, 38.25], [-76.75, 38.35], [-76.82, 38.32], [-76.97, 37.97], [-77.32, 37.82], [-77.47, 37.47], [-78.0, 37.25], [-78.25, 37.35], [-78.5, 37.25], [-79.03, 37.47], [-79.25, 38.0], [-79.03, 38.53], [-78.62, 38.7], [-78.75, 39.0], [-78.65, 39.25], [-78.75, 39.5], [-78.65, 39.75]]]]}, "2015-06-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.65, 39.75], [-78.75, 40.0], [-78.65, 40.25], [-78.75, 40.5], [-78.53, 41.03], [-78.18, 41.18], [-78.15, 41.25], [-78.25, 41.5], [-78.03, 42.03], [-77.5, 42.25], [-77.0, 42.04], [-76.5, 42.25], [-76.25, 42.15], [-76.0, 42.25], [-75.47, 42.03], [-75.25, 41.5], [-75.35, 41.25], [-75.25, 41.0], [-75.35, 40.75], [-75.32, 40.68], [-74.97, 40.53], [-74.75, 40.0], [-74.85, 39.75], [-74.75, 39.5], [-74.97, 38.97], [-75.5, 38.75], [-75.75, 38.85], [-75.82, 38.82], [-75.97, 38.47], [-76.5, 38.25], [-76.75, 38.35], [-76.82, 38.32], [-76.97, 37.97], [-77.32, 37.82], [-77.47, 37.47], [-78.0, 37.25], [-78.25, 37.35], [-78.5, 37.25], [-79.03, 37.47], [-79.25, 38.0], [-79.03, 38.53], [-78.62, 38.7], [-78.75, 39.0], [-78.65, 39.25], [-78.75, 39.5], [-78.65, 39.75]]]]}, "2015-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-78.65, 39.75], [-78.75, 40.0], [-78.65, 40.25], [-78.75, 40.5], [-78.53, 41.03], [-78.18, 41.18], [-78.15, 41.25], [-78.25, 41.5], [-78.03, 42.03], [-77.5, 42.25], [-77.0, 42.04], [-76.5, 42.25], [-76.25, 42.15], [-76.0, 42.25], [-75.47, 42.03], [-75.25, 41.5], [-75.35, 41.25], [-75.25, 41.0], [-75.35, 40.75], [-75.32, 40.68], [-74.97, 40.53], [-74.75, 40.0], [-74.85, 39.75], [-74.75, 39.5], [-74.97, 38.97], [-75.5, 38.75], [-75.75, 38.85], [-75.82, 38.82], [-75.97, 38.47], [-76.5, 38.25], [-76.75, 38.35], [-76.82, 38.32], [-76.97, 37.97], [-77.32, 37.82], [-77.47, 37.47], [-78.0, 37.25], [-78.25, 37.35], [-78.5, 37.25], [-79.03, 37.47], [-79.25, 38.0], [-79.03, 38.53], [-78.62, 38.7], [-78.75, 39.0], [-78.65, 39.25], [-78.75, 39.5], [-78.65, 39.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.2304218440380055}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.9638499315890647}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.56004549839696, 18.76608935643668, 19.919777098298937]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.004668267122213, 14.204999539966195, 16.32245852745274]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.796542499275668, -4.629738543934415, -3.4652687515571112]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.759954612475951, -6.2304218440380055, -4.22377465432379]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6524312624756632, -2.037203226414857, -1.4691049082084182]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0445225206939344, -2.5469982191897516, -2.0082583737279784]}}