{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:01.932489", "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-Dec-23_to_2012-Dec-25_286.5_3.0"}, "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": 2012120000942}, "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": "December 23 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 25 2012"}, "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": 86450.40590245511}, "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": ["Colombia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.W.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South 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": 3.0}, "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": 286.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -0.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 4.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.53, 3.03], [-75.0, 3.25], [-74.75, 3.15], [-74.68, 3.18], [-74.53, 3.53], [-74.18, 3.68], [-74.03, 4.03], [-73.68, 4.18], [-73.65, 4.25], [-73.75, 4.5], [-73.53, 5.03], [-73.0, 5.25], [-72.75, 5.15], [-72.5, 5.25], [-72.25, 5.15], [-72.0, 5.25], [-71.75, 5.15], [-71.5, 5.25], [-70.97, 5.03], [-70.75, 4.5], [-70.97, 3.97], [-71.5, 3.75], [-71.75, 3.85], [-71.82, 3.82], [-71.97, 3.47], [-72.32, 3.32], [-72.47, 2.97], [-72.82, 2.82], [-72.85, 2.75], [-72.82, 2.68], [-72.47, 2.53], [-72.32, 2.18], [-71.97, 2.03], [-71.75, 1.5], [-71.97, 0.97], [-72.5, 0.75], [-72.75, 0.85], [-72.82, 0.82], [-72.85, 0.75], [-72.75, 0.5], [-72.97, -0.03], [-73.32, -0.18], [-73.47, -0.53], [-74.0, -0.75], [-74.53, -0.53], [-74.75, 0.0], [-74.65, 0.25], [-74.75, 0.5], [-74.65, 0.75], [-74.75, 1.0], [-74.65, 1.25], [-74.68, 1.32], [-74.75, 1.35], [-75.0, 1.25], [-75.53, 1.47], [-75.75, 2.0], [-75.65, 2.25], [-75.75, 2.5], [-75.53, 3.03]]]]}, "2012-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.53, 3.03], [-75.0, 3.25], [-74.75, 3.15], [-74.68, 3.18], [-74.53, 3.53], [-74.18, 3.68], [-74.03, 4.03], [-73.68, 4.18], [-73.65, 4.25], [-73.75, 4.5], [-73.53, 5.03], [-73.0, 5.25], [-72.75, 5.15], [-72.5, 5.25], [-72.25, 5.15], [-72.0, 5.25], [-71.75, 5.15], [-71.5, 5.25], [-70.97, 5.03], [-70.75, 4.5], [-70.97, 3.97], [-71.5, 3.75], [-71.75, 3.85], [-71.82, 3.82], [-71.97, 3.47], [-72.32, 3.32], [-72.47, 2.97], [-72.82, 2.82], [-72.85, 2.75], [-72.82, 2.68], [-72.47, 2.53], [-72.32, 2.18], [-71.97, 2.03], [-71.75, 1.5], [-71.97, 0.97], [-72.5, 0.75], [-72.75, 0.85], [-72.82, 0.82], [-72.85, 0.75], [-72.75, 0.5], [-72.97, -0.03], [-73.32, -0.18], [-73.47, -0.53], [-74.0, -0.75], [-74.53, -0.53], [-74.75, 0.0], [-74.65, 0.25], [-74.75, 0.5], [-74.65, 0.75], [-74.75, 1.0], [-74.65, 1.25], [-74.68, 1.32], [-74.75, 1.35], [-75.0, 1.25], [-75.53, 1.47], [-75.75, 2.0], [-75.65, 2.25], [-75.75, 2.5], [-75.53, 3.03]]]]}, "2012-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.53, 3.03], [-75.0, 3.25], [-74.75, 3.15], [-74.68, 3.18], [-74.53, 3.53], [-74.18, 3.68], [-74.03, 4.03], [-73.68, 4.18], [-73.65, 4.25], [-73.75, 4.5], [-73.53, 5.03], [-73.0, 5.25], [-72.75, 5.15], [-72.5, 5.25], [-72.25, 5.15], [-72.0, 5.25], [-71.75, 5.15], [-71.5, 5.25], [-70.97, 5.03], [-70.75, 4.5], [-70.97, 3.97], [-71.5, 3.75], [-71.75, 3.85], [-71.82, 3.82], [-71.97, 3.47], [-72.32, 3.32], [-72.47, 2.97], [-72.82, 2.82], [-72.85, 2.75], [-72.82, 2.68], [-72.47, 2.53], [-72.32, 2.18], [-71.97, 2.03], [-71.75, 1.5], [-71.97, 0.97], [-72.5, 0.75], [-72.75, 0.85], [-72.82, 0.82], [-72.85, 0.75], [-72.75, 0.5], [-72.97, -0.03], [-73.32, -0.18], [-73.47, -0.53], [-74.0, -0.75], [-74.53, -0.53], [-74.75, 0.0], [-74.65, 0.25], [-74.75, 0.5], [-74.65, 0.75], [-74.75, 1.0], [-74.65, 1.25], [-74.68, 1.32], [-74.75, 1.35], [-75.0, 1.25], [-75.53, 1.47], [-75.75, 2.0], [-75.65, 2.25], [-75.75, 2.5], [-75.53, 3.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.9572063958940475}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.788915927375656}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.044444094355583, 23.421713750006745, 23.95252230844079]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.8765076968063, 18.345654205597327, 18.702403940617614]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.191617732512451, -1.8302197585342108, -1.3449102910803066]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.9572063958940475, -2.346799049318861, -1.721161452722697]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.498380798700787, -2.0762621349100643, -1.5281999200190712]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.768744477960439, -2.780293927047014, -2.00899258113489]}}