{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:17.090354", "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": "2012-Jan-03_to_2012-Jan-06_281.0_22.5"}, "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": 2012010000271}, "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": "January 03 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 2012"}, "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": 180446.0033402354}, "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": ["Bahamas", "Cuba"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "E.North-America", "N.Atlantic-Ocean"]}, "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", "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": 22.5}, "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": 281.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "281.0\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": 286.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 29.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-01-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 24.0], [-80.03, 24.53], [-79.68, 24.68], [-79.65, 24.75], [-79.75, 25.0], [-79.53, 25.53], [-79.18, 25.68], [-79.15, 25.75], [-79.18, 25.82], [-79.53, 25.97], [-79.75, 26.5], [-79.65, 26.75], [-79.75, 27.0], [-79.53, 27.53], [-79.0, 27.75], [-78.75, 27.65], [-78.5, 27.75], [-78.25, 27.65], [-78.18, 27.68], [-78.03, 28.03], [-77.68, 28.18], [-77.53, 28.53], [-77.0, 28.75], [-76.75, 28.65], [-76.68, 28.68], [-76.53, 29.03], [-76.0, 29.25], [-75.75, 29.15], [-75.68, 29.18], [-75.53, 29.53], [-75.18, 29.68], [-75.03, 30.03], [-74.5, 30.25], [-74.25, 30.15], [-74.0, 30.25], [-73.75, 30.15], [-73.5, 30.25], [-72.97, 30.03], [-72.75, 29.5], [-72.97, 28.97], [-73.32, 28.82], [-73.47, 28.47], [-73.82, 28.32], [-73.97, 27.97], [-74.32, 27.82], [-74.47, 27.47], [-74.82, 27.32], [-74.85, 27.25], [-74.75, 27.0], [-74.97, 26.47], [-75.32, 26.32], [-75.47, 25.97], [-75.82, 25.82], [-75.97, 25.47], [-76.32, 25.32], [-76.47, 24.97], [-77.0, 24.75], [-77.25, 24.85], [-77.32, 24.82], [-77.47, 24.47], [-77.82, 24.32], [-77.85, 24.25], [-77.75, 24.0], [-77.97, 23.47], [-78.5, 23.25], [-78.75, 23.35], [-78.82, 23.32], [-78.85, 23.25], [-78.75, 23.0], [-78.97, 22.47], [-79.5, 22.25], [-79.75, 22.35], [-80.0, 22.25], [-80.53, 22.47], [-80.75, 23.0], [-80.53, 23.53], [-80.18, 23.68], [-80.15, 23.75], [-80.25, 24.0]]]]}, "2012-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.25, 22.5], [-82.03, 23.03], [-81.5, 23.25], [-81.25, 23.15], [-81.0, 23.25], [-80.75, 23.15], [-80.68, 23.18], [-80.53, 23.53], [-80.18, 23.68], [-80.15, 23.75], [-80.25, 24.0], [-80.03, 24.53], [-79.68, 24.68], [-79.65, 24.75], [-79.75, 25.0], [-79.53, 25.53], [-79.18, 25.68], [-79.15, 25.75], [-79.18, 25.82], [-79.53, 25.97], [-79.75, 26.5], [-79.65, 26.75], [-79.75, 27.0], [-79.53, 27.53], [-79.0, 27.75], [-78.75, 27.65], [-78.5, 27.75], [-78.25, 27.65], [-78.18, 27.68], [-78.03, 28.03], [-77.68, 28.18], [-77.53, 28.53], [-77.0, 28.75], [-76.75, 28.65], [-76.68, 28.68], [-76.53, 29.03], [-76.0, 29.25], [-75.75, 29.15], [-75.68, 29.18], [-75.53, 29.53], [-75.18, 29.68], [-75.03, 30.03], [-74.5, 30.25], [-74.25, 30.15], [-74.0, 30.25], [-73.75, 30.15], [-73.5, 30.25], [-72.97, 30.03], [-72.75, 29.5], [-72.97, 28.97], [-73.32, 28.82], [-73.47, 28.47], [-73.82, 28.32], [-73.97, 27.97], [-74.32, 27.82], [-74.47, 27.47], [-74.82, 27.32], [-74.85, 27.25], [-74.75, 27.0], [-74.97, 26.47], [-75.32, 26.32], [-75.47, 25.97], [-75.82, 25.82], [-75.97, 25.47], [-76.32, 25.32], [-76.47, 24.97], [-77.0, 24.75], [-77.25, 24.85], [-77.32, 24.82], [-77.47, 24.47], [-77.82, 24.32], [-77.85, 24.25], [-77.75, 24.0], [-77.96, 23.5], [-77.75, 23.0], [-77.97, 22.47], [-78.32, 22.32], [-78.47, 21.97], [-78.82, 21.82], [-78.97, 21.47], [-79.5, 21.25], [-79.75, 21.35], [-80.0, 21.25], [-80.5, 21.46], [-81.0, 21.25], [-81.53, 21.47], [-81.68, 21.82], [-82.03, 21.97], [-82.25, 22.5]]]]}, "2012-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.25, 22.5], [-82.03, 23.03], [-81.5, 23.25], [-81.25, 23.15], [-81.0, 23.25], [-80.75, 23.15], [-80.68, 23.18], [-80.53, 23.53], [-80.18, 23.68], [-80.15, 23.75], [-80.25, 24.0], [-80.03, 24.53], [-79.68, 24.68], [-79.65, 24.75], [-79.75, 25.0], [-79.53, 25.53], [-79.18, 25.68], [-79.15, 25.75], [-79.18, 25.82], [-79.53, 25.97], [-79.75, 26.5], [-79.65, 26.75], [-79.75, 27.0], [-79.53, 27.53], [-79.0, 27.75], [-78.75, 27.65], [-78.5, 27.75], [-78.25, 27.65], [-78.18, 27.68], [-78.03, 28.03], [-77.68, 28.18], [-77.53, 28.53], [-77.0, 28.75], [-76.75, 28.65], [-76.68, 28.68], [-76.53, 29.03], [-76.0, 29.25], [-75.75, 29.15], [-75.68, 29.18], [-75.53, 29.53], [-75.18, 29.68], [-75.03, 30.03], [-74.5, 30.25], [-74.25, 30.15], [-74.0, 30.25], [-73.75, 30.15], [-73.5, 30.25], [-72.97, 30.03], [-72.75, 29.5], [-72.97, 28.97], [-73.32, 28.82], [-73.47, 28.47], [-73.82, 28.32], [-73.97, 27.97], [-74.32, 27.82], [-74.47, 27.47], [-74.82, 27.32], [-74.85, 27.25], [-74.75, 27.0], [-74.97, 26.47], [-75.32, 26.32], [-75.47, 25.97], [-75.82, 25.82], [-75.97, 25.47], [-76.32, 25.32], [-76.47, 24.97], [-77.0, 24.75], [-77.25, 24.85], [-77.32, 24.82], [-77.47, 24.47], [-77.82, 24.32], [-77.85, 24.25], [-77.75, 24.0], [-77.96, 23.5], [-77.75, 23.0], [-77.97, 22.47], [-78.32, 22.32], [-78.47, 21.97], [-78.82, 21.82], [-78.97, 21.47], [-79.5, 21.25], [-79.75, 21.35], [-80.0, 21.25], [-80.5, 21.46], [-81.0, 21.25], [-81.53, 21.47], [-81.68, 21.82], [-82.03, 21.97], [-82.25, 22.5]]]]}, "2012-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-82.25, 22.5], [-82.03, 23.03], [-81.5, 23.25], [-81.25, 23.15], [-81.0, 23.25], [-80.75, 23.15], [-80.5, 23.25], [-80.25, 23.15], [-80.0, 23.25], [-79.7, 23.12], [-79.53, 23.53], [-79.0, 23.75], [-78.75, 23.65], [-78.5, 23.75], [-77.97, 23.53], [-77.75, 23.0], [-77.97, 22.47], [-78.32, 22.32], [-78.47, 21.97], [-78.82, 21.82], [-78.97, 21.47], [-79.5, 21.25], [-79.75, 21.35], [-80.0, 21.25], [-80.5, 21.46], [-81.0, 21.25], [-81.53, 21.47], [-81.68, 21.82], [-82.03, 21.97], [-82.25, 22.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.717534194626637}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.573493781859688}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.038541900895837, 15.80844968588542, 17.869457863270895, 18.478501973392213]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.923096158952603, 13.777791158503248, 14.750769159267179, 15.579743211379537]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.6655763982283145, -6.115619838940859, -3.9153144695071274, -3.8213855510962675]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.397104374137712, -6.717534194626637, -5.936027480202313, -4.9256312794892665]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6894970247112209, -2.920483867701495, -1.811460070944638, -1.6648952149910978]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0503424250943443, -3.4069744120406504, -2.381073820978996, -1.911845278718625]}}