{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:41.758382", "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-Feb-11_to_2014-Feb-13_280.0_34.0"}, "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": 2014020000483}, "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": "February 11 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 13 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": 60778.723301366685}, "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": []}, "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": 34.0}, "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": 280.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "280.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 278.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 281.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 35.03], [-81.5, 35.25], [-81.25, 35.15], [-81.0, 35.25], [-80.75, 35.15], [-80.68, 35.18], [-80.65, 35.25], [-80.75, 35.5], [-80.53, 36.03], [-80.12, 36.2], [-80.25, 36.5], [-80.03, 37.03], [-79.5, 37.25], [-79.25, 37.15], [-79.0, 37.25], [-78.75, 37.15], [-78.5, 37.25], [-77.97, 37.03], [-77.75, 36.5], [-77.85, 36.25], [-77.75, 36.0], [-77.96, 35.5], [-77.75, 35.0], [-77.85, 34.75], [-77.75, 34.5], [-77.97, 33.97], [-78.5, 33.75], [-78.75, 33.85], [-78.82, 33.82], [-78.97, 33.47], [-79.5, 33.25], [-79.75, 33.35], [-80.0, 33.25], [-80.25, 33.35], [-80.5, 33.25], [-80.75, 33.35], [-81.0, 33.25], [-81.25, 33.35], [-81.5, 33.25], [-82.03, 33.47], [-82.25, 34.0], [-82.15, 34.25], [-82.25, 34.5], [-82.03, 35.03]]]]}, "2014-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 35.03], [-81.5, 35.25], [-81.25, 35.15], [-81.0, 35.25], [-80.75, 35.15], [-80.68, 35.18], [-80.65, 35.25], [-80.75, 35.5], [-80.53, 36.03], [-80.12, 36.2], [-80.25, 36.5], [-80.03, 37.03], [-79.5, 37.25], [-79.25, 37.15], [-79.0, 37.25], [-78.75, 37.15], [-78.5, 37.25], [-77.97, 37.03], [-77.75, 36.5], [-77.85, 36.25], [-77.75, 36.0], [-77.96, 35.5], [-77.75, 35.0], [-77.85, 34.75], [-77.75, 34.5], [-77.97, 33.97], [-78.5, 33.75], [-78.75, 33.85], [-78.82, 33.82], [-78.97, 33.47], [-79.5, 33.25], [-79.75, 33.35], [-80.0, 33.25], [-80.25, 33.35], [-80.5, 33.25], [-80.75, 33.35], [-81.0, 33.25], [-81.25, 33.35], [-81.5, 33.25], [-82.03, 33.47], [-82.25, 34.0], [-82.15, 34.25], [-82.25, 34.5], [-82.03, 35.03]]]]}, "2014-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.03, 35.03], [-81.5, 35.25], [-81.25, 35.15], [-81.0, 35.25], [-80.75, 35.15], [-80.68, 35.18], [-80.65, 35.25], [-80.75, 35.5], [-80.53, 36.03], [-80.12, 36.2], [-80.25, 36.5], [-80.03, 37.03], [-79.5, 37.25], [-79.25, 37.15], [-79.0, 37.25], [-78.75, 37.15], [-78.5, 37.25], [-77.97, 37.03], [-77.75, 36.5], [-77.85, 36.25], [-77.75, 36.0], [-77.96, 35.5], [-77.75, 35.0], [-77.85, 34.75], [-77.75, 34.5], [-77.97, 33.97], [-78.5, 33.75], [-78.75, 33.85], [-78.82, 33.82], [-78.97, 33.47], [-79.5, 33.25], [-79.75, 33.35], [-80.0, 33.25], [-80.25, 33.35], [-80.5, 33.25], [-80.75, 33.35], [-81.0, 33.25], [-81.25, 33.35], [-81.5, 33.25], [-82.03, 33.47], [-82.25, 34.0], [-82.15, 34.25], [-82.25, 34.5], [-82.03, 35.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.729932453756248}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.872770053148067}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.3263254952769898, -2.4134539835282, -0.05190992100563108]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.2334919011512966, -3.7287677869574622, -1.5513493382156298]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.157757358758076, -9.867956116928154, -7.592596683757971]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.046174413228414, -10.729932453756248, -8.65024804823014]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2794174744383888, -2.0543566095490253, -1.5406847114726965]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4324791713846534, -2.2200177507660315, -1.7846280242683312]}}