{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:56.394588", "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-12_to_2011-Mar-14_284.0_24.5"}, "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": 2011030000716}, "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 12 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 14 2011"}, "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": 143151.13465434583}, "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"]}, "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": ["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": 24.5}, "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": 283.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 287.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 27.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, 24.0], [-77.03, 24.53], [-76.68, 24.68], [-76.53, 25.03], [-76.18, 25.18], [-76.03, 25.53], [-75.62, 25.7], [-75.75, 26.0], [-75.65, 26.25], [-75.75, 26.5], [-75.53, 27.03], [-75.0, 27.25], [-74.75, 27.15], [-74.68, 27.18], [-74.53, 27.53], [-74.0, 27.75], [-73.75, 27.65], [-73.68, 27.68], [-73.53, 28.03], [-73.0, 28.25], [-72.75, 28.15], [-72.5, 28.25], [-71.97, 28.03], [-71.75, 27.5], [-71.85, 27.25], [-71.75, 27.0], [-71.85, 26.75], [-71.75, 26.5], [-71.85, 26.25], [-71.75, 26.0], [-71.97, 25.47], [-72.32, 25.32], [-72.47, 24.97], [-72.82, 24.82], [-72.97, 24.47], [-73.32, 24.32], [-73.47, 23.97], [-73.82, 23.82], [-73.85, 23.75], [-73.75, 23.5], [-73.85, 23.25], [-73.75, 23.0], [-73.97, 22.47], [-74.37, 22.3], [-74.25, 22.0], [-74.47, 21.47], [-74.82, 21.32], [-74.85, 21.25], [-74.75, 21.0], [-74.97, 20.47], [-75.5, 20.25], [-76.03, 20.47], [-76.18, 20.82], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.03, 22.03], [-76.62, 22.2], [-76.75, 22.5], [-76.65, 22.75], [-76.75, 23.0], [-76.65, 23.25], [-76.68, 23.32], [-77.03, 23.47], [-77.25, 24.0]]]]}, "2011-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, 24.0], [-77.03, 24.53], [-76.68, 24.68], [-76.53, 25.03], [-76.18, 25.18], [-76.03, 25.53], [-75.62, 25.7], [-75.75, 26.0], [-75.65, 26.25], [-75.75, 26.5], [-75.53, 27.03], [-75.0, 27.25], [-74.75, 27.15], [-74.68, 27.18], [-74.53, 27.53], [-74.0, 27.75], [-73.75, 27.65], [-73.68, 27.68], [-73.53, 28.03], [-73.0, 28.25], [-72.75, 28.15], [-72.5, 28.25], [-71.97, 28.03], [-71.75, 27.5], [-71.85, 27.25], [-71.75, 27.0], [-71.85, 26.75], [-71.75, 26.5], [-71.85, 26.25], [-71.75, 26.0], [-71.97, 25.47], [-72.32, 25.32], [-72.47, 24.97], [-72.82, 24.82], [-72.97, 24.47], [-73.32, 24.32], [-73.47, 23.97], [-73.82, 23.82], [-73.85, 23.75], [-73.75, 23.5], [-73.85, 23.25], [-73.75, 23.0], [-73.97, 22.47], [-74.37, 22.3], [-74.25, 22.0], [-74.47, 21.47], [-74.82, 21.32], [-74.85, 21.25], [-74.75, 21.0], [-74.97, 20.47], [-75.5, 20.25], [-76.03, 20.47], [-76.18, 20.82], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.03, 22.03], [-76.62, 22.2], [-76.75, 22.5], [-76.65, 22.75], [-76.75, 23.0], [-76.65, 23.25], [-76.68, 23.32], [-77.03, 23.47], [-77.25, 24.0]]]]}, "2011-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.25, 24.0], [-77.03, 24.53], [-76.68, 24.68], [-76.53, 25.03], [-76.18, 25.18], [-76.03, 25.53], [-75.62, 25.7], [-75.75, 26.0], [-75.65, 26.25], [-75.75, 26.5], [-75.53, 27.03], [-75.0, 27.25], [-74.75, 27.15], [-74.68, 27.18], [-74.53, 27.53], [-74.0, 27.75], [-73.75, 27.65], [-73.68, 27.68], [-73.53, 28.03], [-73.0, 28.25], [-72.75, 28.15], [-72.5, 28.25], [-71.97, 28.03], [-71.75, 27.5], [-71.85, 27.25], [-71.75, 27.0], [-71.85, 26.75], [-71.75, 26.5], [-71.85, 26.25], [-71.75, 26.0], [-71.97, 25.47], [-72.32, 25.32], [-72.47, 24.97], [-72.82, 24.82], [-72.97, 24.47], [-73.32, 24.32], [-73.47, 23.97], [-73.82, 23.82], [-73.85, 23.75], [-73.75, 23.5], [-73.85, 23.25], [-73.75, 23.0], [-73.97, 22.47], [-74.37, 22.3], [-74.25, 22.0], [-74.47, 21.47], [-74.82, 21.32], [-74.85, 21.25], [-74.75, 21.0], [-74.97, 20.47], [-75.5, 20.25], [-76.03, 20.47], [-76.18, 20.82], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.03, 22.03], [-76.62, 22.2], [-76.75, 22.5], [-76.65, 22.75], [-76.75, 23.0], [-76.65, 23.25], [-76.68, 23.32], [-77.03, 23.47], [-77.25, 24.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1544970415162084}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.303419782147505}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.2680679033121, 20.14895986135849, 20.55389892238111]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.469629799157644, 18.539079558916228, 18.11978474766329]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3384381207969183, -2.469950885971144, -2.1018703396744525]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.1544970415162084, -2.805525338257837, -2.7907570852762547]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.711005179563641, -1.8469919215616324, -1.5588920103935133]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1597667893701202, -2.0784876136108954, -1.7387621406261222]}}