{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:06.544901", "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": "2015-Jan-21_to_2015-Jan-23_286.0_-4.0"}, "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": 2015010001005}, "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 21 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 23 2015"}, "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": 74095.38315739496}, "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", "Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": -4.0}, "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": 286.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 283.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.68, -1.32], [-75.53, -0.97], [-75.18, -0.82], [-75.03, -0.47], [-74.5, -0.25], [-74.25, -0.35], [-74.0, -0.25], [-73.47, -0.47], [-73.25, -1.0], [-73.35, -1.25], [-73.25, -1.5], [-73.35, -1.75], [-73.32, -1.82], [-73.25, -1.85], [-73.0, -1.75], [-72.75, -1.85], [-72.68, -1.82], [-72.53, -1.47], [-72.0, -1.25], [-71.47, -1.47], [-71.25, -2.0], [-71.35, -2.25], [-71.25, -2.5], [-71.35, -2.75], [-71.25, -3.0], [-71.35, -3.25], [-71.25, -3.5], [-71.47, -4.03], [-72.0, -4.25], [-72.25, -4.15], [-72.32, -4.18], [-72.47, -4.53], [-73.0, -4.75], [-73.25, -4.65], [-73.5, -4.75], [-73.75, -4.65], [-74.0, -4.75], [-74.53, -4.53], [-74.75, -4.0], [-74.65, -3.75], [-74.75, -3.5], [-74.65, -3.25], [-74.75, -3.0], [-74.65, -2.75], [-74.75, -2.5], [-74.65, -2.25], [-74.7, -2.12], [-74.82, -2.18], [-74.97, -2.53], [-75.32, -2.68], [-75.47, -3.03], [-76.0, -3.25], [-76.53, -3.03], [-76.75, -2.5], [-76.53, -1.97], [-76.18, -1.82], [-76.03, -1.47], [-75.68, -1.32]]]]}, "2015-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.68, -1.32], [-75.53, -0.97], [-75.18, -0.82], [-75.03, -0.47], [-74.5, -0.25], [-74.25, -0.35], [-74.0, -0.25], [-73.47, -0.47], [-73.25, -1.0], [-73.35, -1.25], [-73.25, -1.5], [-73.35, -1.75], [-73.32, -1.82], [-73.25, -1.85], [-73.0, -1.75], [-72.75, -1.85], [-72.68, -1.82], [-72.53, -1.47], [-72.0, -1.25], [-71.47, -1.47], [-71.25, -2.0], [-71.35, -2.25], [-71.25, -2.5], [-71.35, -2.75], [-71.25, -3.0], [-71.35, -3.25], [-71.25, -3.5], [-71.47, -4.03], [-72.0, -4.25], [-72.25, -4.15], [-72.32, -4.18], [-72.47, -4.53], [-73.0, -4.75], [-73.25, -4.65], [-73.5, -4.75], [-73.75, -4.65], [-74.0, -4.75], [-74.53, -4.53], [-74.75, -4.0], [-74.65, -3.75], [-74.75, -3.5], [-74.65, -3.25], [-74.75, -3.0], [-74.65, -2.75], [-74.75, -2.5], [-74.65, -2.25], [-74.7, -2.12], [-74.82, -2.18], [-74.97, -2.53], [-75.32, -2.68], [-75.47, -3.03], [-76.0, -3.25], [-76.53, -3.03], [-76.75, -2.5], [-76.53, -1.97], [-76.18, -1.82], [-76.03, -1.47], [-75.68, -1.32]]]]}, "2015-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.68, -1.32], [-75.53, -0.97], [-75.18, -0.82], [-75.03, -0.47], [-74.5, -0.25], [-74.25, -0.35], [-74.0, -0.25], [-73.47, -0.47], [-73.25, -1.0], [-73.35, -1.25], [-73.25, -1.5], [-73.35, -1.75], [-73.32, -1.82], [-73.25, -1.85], [-73.0, -1.75], [-72.75, -1.85], [-72.68, -1.82], [-72.53, -1.47], [-72.0, -1.25], [-71.47, -1.47], [-71.25, -2.0], [-71.35, -2.25], [-71.25, -2.5], [-71.35, -2.75], [-71.25, -3.0], [-71.35, -3.25], [-71.25, -3.5], [-71.47, -4.03], [-72.0, -4.25], [-72.25, -4.15], [-72.32, -4.18], [-72.47, -4.53], [-73.0, -4.75], [-73.25, -4.65], [-73.5, -4.75], [-73.75, -4.65], [-74.0, -4.75], [-74.53, -4.53], [-74.75, -4.0], [-74.65, -3.75], [-74.75, -3.5], [-74.65, -3.25], [-74.75, -3.0], [-74.65, -2.75], [-74.75, -2.5], [-74.65, -2.25], [-74.7, -2.12], [-74.82, -2.18], [-74.97, -2.53], [-75.32, -2.68], [-75.47, -3.03], [-76.0, -3.25], [-76.53, -3.03], [-76.75, -2.5], [-76.53, -1.97], [-76.18, -1.82], [-76.03, -1.47], [-75.68, -1.32]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.029650151643011}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6188690310839737}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.95191168089633, 23.995061282505787, 24.1307809345671]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.53852115795428, 23.580068677340023, 23.798513009409874]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6643026634492013, -1.6425157680557991, -1.549788661746921]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.029650151643011, -1.9658001100808065, -1.8256624883480868]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4705436299698682, -1.4633284240928288, -1.3834477616674592]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7710779153938405, -1.8658145481596529, -1.731285020998136]}}