{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:58.394922", "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": "2018-Sep-05_to_2018-Sep-08_283.5_21.5"}, "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": 2018090000269}, "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": "September 05 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 08 2018"}, "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": 70726.21686817109}, "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"]}, "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": 21.5}, "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": 283.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.5\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": 289.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.0, 22.75], [-75.75, 22.65], [-75.68, 22.68], [-75.65, 22.75], [-75.75, 23.0], [-75.65, 23.25], [-75.75, 23.5], [-75.53, 24.03], [-75.18, 24.18], [-75.03, 24.53], [-74.5, 24.75], [-74.25, 24.65], [-74.18, 24.68], [-74.03, 25.03], [-73.5, 25.25], [-73.25, 25.15], [-73.0, 25.25], [-72.75, 25.15], [-72.68, 25.18], [-72.53, 25.53], [-72.0, 25.75], [-71.75, 25.65], [-71.5, 25.75], [-71.25, 25.65], [-71.0, 25.75], [-70.47, 25.53], [-70.25, 25.0], [-70.35, 24.75], [-70.25, 24.5], [-70.35, 24.25], [-70.25, 24.0], [-70.47, 23.47], [-71.0, 23.25], [-71.25, 23.35], [-71.5, 23.25], [-71.75, 23.35], [-72.0, 23.25], [-72.25, 23.35], [-72.5, 23.25], [-72.75, 23.35], [-73.0, 23.25], [-73.25, 23.35], [-73.5, 23.25], [-73.75, 23.35], [-73.82, 23.32], [-73.97, 22.97], [-74.32, 22.82], [-74.35, 22.75], [-74.25, 22.5], [-74.47, 21.97], [-74.82, 21.82], [-74.97, 21.47], [-75.32, 21.32], [-75.47, 20.97], [-76.0, 20.75], [-76.25, 20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.03, 22.03], [-76.68, 22.18], [-76.53, 22.53], [-76.0, 22.75]]]]}, 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20.85], [-76.5, 20.75], [-77.03, 20.97], [-77.25, 21.5], [-77.03, 22.03], [-76.68, 22.18], [-76.53, 22.53], [-76.0, 22.75]]]]}, "2018-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-76.0, 22.75], [-75.75, 22.65], [-75.68, 22.68], [-75.65, 22.75], [-75.75, 23.0], [-75.65, 23.25], [-75.75, 23.5], [-75.53, 24.03], [-75.18, 24.18], [-75.03, 24.53], [-74.5, 24.75], [-74.25, 24.65], [-74.18, 24.68], [-74.03, 25.03], [-73.5, 25.25], [-73.25, 25.15], [-73.0, 25.25], [-72.75, 25.15], [-72.68, 25.18], [-72.53, 25.53], [-72.0, 25.75], [-71.75, 25.65], [-71.5, 25.75], [-71.25, 25.65], [-71.0, 25.75], [-70.47, 25.53], [-70.25, 25.0], [-70.35, 24.75], [-70.25, 24.5], [-70.35, 24.25], [-70.25, 24.0], [-70.47, 23.47], [-71.0, 23.25], [-71.25, 23.35], [-71.5, 23.25], [-71.75, 23.35], [-72.0, 23.25], [-72.25, 23.35], [-72.5, 23.25], [-72.75, 23.35], [-73.0, 23.25], [-73.25, 23.35], [-73.5, 23.25], [-73.75, 23.35], [-73.82, 23.32], [-73.97, 22.97], [-74.32, 22.82], [-74.35, 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maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.255623227556896, 25.932261828686364, 26.409766931980926, 26.503776762228995]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0748402610861354, -1.3907943998225734, -1.0637970507732097, -0.9478523503515817]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.2673392509770451, -1.9536242731815605, -1.2383876775663794, -0.9478523503515817]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6884766367623112, -2.194192535605557, -1.7221313712647768, -1.43733166906746]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.061301106792054, -3.1549033451291044, -2.0799378505602335, -1.43733166906746]}}