{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:56.062935", "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": "2011-Mar-11_to_2011-Mar-15_276.5_13.0"}, "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": 2011030000666}, "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 11 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 15 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 105205.34368313201}, "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": ["Nicaragua"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-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": ["Caribbean Sea"]}, "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": 13.0}, "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": 276.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "276.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 274.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 278.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-03-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.47, 11.53], [-82.25, 11.0], [-82.47, 10.47], [-83.0, 10.25], [-83.25, 10.35], [-83.5, 10.25], [-84.03, 10.47], [-84.25, 11.0], [-84.03, 11.53], [-83.5, 11.75], [-83.25, 11.65], [-83.0, 11.75], [-82.47, 11.53]]], [[[-86.25, 11.5], [-86.03, 12.03], [-85.5, 12.25], [-84.97, 12.03], [-84.75, 11.5], [-84.97, 10.97], [-85.5, 10.75], [-86.03, 10.97], [-86.25, 11.5]]], [[[-83.75, 14.15], [-83.68, 14.18], [-83.53, 14.53], [-83.0, 14.75], [-82.47, 14.53], [-82.25, 14.0], [-82.35, 13.75], [-82.25, 13.5], [-82.47, 12.97], [-82.82, 12.82], [-82.85, 12.75], [-82.75, 12.5], [-82.97, 11.97], [-83.5, 11.75], [-84.03, 11.97], [-84.18, 12.32], [-84.53, 12.47], [-84.75, 13.0], [-84.65, 13.25], [-84.75, 13.5], [-84.53, 14.03], [-84.0, 14.25], [-83.75, 14.15]]]]}, "2011-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.25, 11.5], [-86.03, 12.03], [-85.62, 12.2], [-85.75, 12.5], [-85.53, 13.03], [-85.18, 13.18], [-85.15, 13.25], [-85.25, 13.5], [-85.03, 14.03], [-84.68, 14.18], [-84.53, 14.53], [-84.18, 14.68], [-84.12, 14.8], [-84.53, 14.97], [-84.75, 15.5], [-84.53, 16.03], [-84.18, 16.18], [-84.03, 16.53], [-83.5, 16.75], [-82.97, 16.53], [-82.75, 16.0], [-82.97, 15.47], [-83.32, 15.32], [-83.37, 15.2], [-82.97, 15.03], [-82.82, 14.68], [-82.47, 14.53], [-82.25, 14.0], [-82.35, 13.75], [-82.25, 13.5], [-82.47, 12.97], [-82.82, 12.82], [-82.85, 12.75], [-82.75, 12.5], [-82.97, 11.97], [-83.32, 11.82], [-83.35, 11.75], [-83.32, 11.68], [-83.25, 11.65], [-83.0, 11.75], [-82.47, 11.53], [-82.25, 11.0], [-82.35, 10.75], [-82.25, 10.5], [-82.47, 9.97], [-83.0, 9.75], [-83.53, 9.97], [-83.68, 10.32], [-84.03, 10.47], [-84.18, 10.82], [-84.25, 10.85], [-84.32, 10.82], [-84.47, 10.47], [-85.0, 10.25], [-85.53, 10.47], [-85.68, 10.82], [-86.03, 10.97], [-86.25, 11.5]]]]}, "2011-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.25, 11.5], [-86.03, 12.03], [-85.62, 12.2], [-85.75, 12.5], [-85.53, 13.03], [-85.18, 13.18], [-85.15, 13.25], [-85.25, 13.5], [-85.03, 14.03], [-84.68, 14.18], [-84.53, 14.53], [-84.18, 14.68], [-84.15, 14.75], [-84.18, 14.82], [-84.53, 14.97], [-84.75, 15.5], [-84.53, 16.03], [-84.18, 16.18], [-84.03, 16.53], [-83.5, 16.75], [-82.97, 16.53], [-82.82, 16.18], [-82.47, 16.03], [-82.32, 15.68], [-82.25, 15.65], [-82.0, 15.75], [-81.47, 15.53], [-81.25, 15.0], [-81.35, 14.75], [-81.25, 14.5], [-81.47, 13.97], [-81.82, 13.82], [-81.97, 13.47], [-82.32, 13.32], [-82.35, 13.25], [-82.25, 13.0], [-82.47, 12.47], [-82.82, 12.32], [-82.97, 11.97], [-83.32, 11.82], [-83.35, 11.75], [-83.32, 11.68], [-83.25, 11.65], [-83.0, 11.75], [-82.47, 11.53], [-82.25, 11.0], [-82.35, 10.75], [-82.25, 10.5], [-82.47, 9.97], [-83.0, 9.75], [-83.53, 9.97], [-83.68, 10.32], [-84.03, 10.47], [-84.18, 10.82], [-84.25, 10.85], [-84.32, 10.82], [-84.47, 10.47], [-85.0, 10.25], [-85.53, 10.47], [-85.68, 10.82], [-86.03, 10.97], [-86.25, 11.5]]]]}, "2011-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.25, 11.5], [-86.03, 12.03], [-85.62, 12.2], [-85.75, 12.5], [-85.53, 13.03], [-85.18, 13.18], [-85.15, 13.25], [-85.25, 13.5], [-85.03, 14.03], [-84.68, 14.18], [-84.53, 14.53], [-84.18, 14.68], [-84.15, 14.75], [-84.18, 14.82], [-84.53, 14.97], [-84.75, 15.5], [-84.53, 16.03], [-84.18, 16.18], [-84.03, 16.53], [-83.5, 16.75], [-82.97, 16.53], [-82.82, 16.18], [-82.47, 16.03], [-82.32, 15.68], [-82.25, 15.65], [-82.0, 15.75], [-81.47, 15.53], [-81.25, 15.0], [-81.35, 14.75], [-81.25, 14.5], [-81.47, 13.97], [-81.82, 13.82], [-81.97, 13.47], [-82.32, 13.32], [-82.35, 13.25], [-82.25, 13.0], [-82.47, 12.47], [-82.82, 12.32], [-82.97, 11.97], [-83.32, 11.82], [-83.35, 11.75], [-83.32, 11.68], [-83.25, 11.65], [-83.0, 11.75], [-82.47, 11.53], [-82.25, 11.0], [-82.35, 10.75], [-82.25, 10.5], [-82.47, 9.97], [-83.0, 9.75], [-83.53, 9.97], [-83.68, 10.32], [-84.03, 10.47], [-84.18, 10.82], [-84.25, 10.85], [-84.32, 10.82], [-84.47, 10.47], [-85.0, 10.25], [-85.53, 10.47], [-85.68, 10.82], [-86.03, 10.97], [-86.25, 11.5]]]]}, "2011-03-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-86.25, 11.5], [-86.03, 12.03], [-85.62, 12.2], [-85.75, 12.5], [-85.53, 13.03], [-85.18, 13.18], [-85.15, 13.25], [-85.25, 13.5], [-85.03, 14.03], [-84.68, 14.18], [-84.53, 14.53], [-84.18, 14.68], [-84.15, 14.75], [-84.18, 14.82], [-84.53, 14.97], [-84.75, 15.5], [-84.53, 16.03], [-84.18, 16.18], [-84.03, 16.53], [-83.5, 16.75], [-82.97, 16.53], [-82.82, 16.18], [-82.47, 16.03], [-82.32, 15.68], [-82.25, 15.65], [-82.0, 15.75], [-81.47, 15.53], [-81.25, 15.0], [-81.35, 14.75], [-81.25, 14.5], [-81.47, 13.97], [-81.82, 13.82], [-81.97, 13.47], [-82.32, 13.32], [-82.35, 13.25], [-82.25, 13.0], [-82.47, 12.47], [-82.82, 12.32], [-82.97, 11.97], [-83.32, 11.82], [-83.35, 11.75], [-83.25, 11.5], [-83.47, 10.97], [-84.0, 10.75], [-84.25, 10.85], [-84.32, 10.82], [-84.47, 10.47], [-85.0, 10.25], [-85.53, 10.47], [-85.68, 10.82], [-86.03, 10.97], [-86.25, 11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0615721523728325}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3293532162899293}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.562140624188828, 24.18850035228462, 24.3255210377215, 24.357612757385652, 24.32732724793408]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.212612892469053, 22.56370395464836, 23.089661481044686, 23.14858199373714, 23.173390630660208]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.230348098248811, -1.3292896568018577, -1.3219467264834048, -1.3229863095232421, -1.376682733126463]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5353580987793407, -1.7803090141950406, -1.96057228878567, -2.0615721523728325, -2.001038725543765]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8393454941816465, -1.7478191457369152, -1.857534412631719, -1.8393575167750942, -1.8418572256501509]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5570210774930637, -2.4107442883840395, -2.809416671305233, -2.659116031129758, -2.49647696358466]}}