{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:47.971145", "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-Aug-26_to_2018-Aug-28_289.0_-9.5"}, "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": 2018080000992}, "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": "August 26 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 28 2018"}, "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": 82430.48812079632}, "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": ["Brazil", "Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "South-American-Monsoon"]}, "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": -9.5}, "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": 289.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "289.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -6.97], [-74.68, -6.82], [-74.53, -6.47], [-74.0, -6.25], [-73.47, -6.47], [-73.25, -7.0], [-73.35, -7.25], [-73.32, -7.32], [-72.97, -7.47], [-72.8, -7.88], [-72.5, -7.75], [-71.97, -7.97], [-71.82, -8.32], [-71.75, -8.35], [-71.5, -8.25], [-71.25, -8.35], [-71.0, -8.25], [-70.47, -8.47], [-70.3, -8.88], [-70.18, -8.82], [-70.15, -8.75], [-70.25, -8.5], [-70.15, -8.25], [-70.25, -8.0], [-70.03, -7.47], [-69.5, -7.25], [-68.97, -7.47], [-68.75, -8.0], [-68.85, -8.25], [-68.75, -8.5], [-68.85, -8.75], [-68.75, -9.0], [-68.97, -9.53], [-69.32, -9.68], [-69.47, -10.03], [-69.82, -10.18], [-69.97, -10.53], [-70.5, -10.75], [-71.03, -10.53], [-71.18, -10.18], [-71.25, -10.15], [-71.5, -10.25], [-72.03, -10.03], [-72.18, -9.68], [-72.3, -9.62], [-72.47, -10.03], [-72.82, -10.18], [-72.97, -10.53], [-73.32, -10.68], [-73.47, -11.03], [-74.0, -11.25], [-74.25, -11.15], [-74.5, -11.25], [-75.03, -11.03], [-75.25, -10.5], [-75.03, -9.97], [-74.68, -9.82], [-74.65, -9.75], [-74.75, -9.5], [-74.65, -9.25], [-74.68, -9.18], [-75.03, -9.03], [-75.25, -8.5], [-75.04, -8.0], [-75.25, -7.5], [-75.03, -6.97]]]]}, "2018-08-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -6.97], [-74.68, -6.82], [-74.53, -6.47], [-74.0, -6.25], [-73.47, -6.47], [-73.25, -7.0], [-73.35, -7.25], [-73.32, -7.32], [-72.97, -7.47], [-72.8, -7.88], [-72.5, -7.75], [-71.97, -7.97], [-71.82, -8.32], [-71.75, -8.35], [-71.5, -8.25], [-71.25, -8.35], [-71.0, -8.25], [-70.47, -8.47], [-70.3, -8.88], [-70.18, -8.82], [-70.15, -8.75], [-70.25, -8.5], [-70.15, -8.25], [-70.25, -8.0], [-70.03, -7.47], [-69.5, -7.25], [-68.97, -7.47], [-68.75, -8.0], [-68.85, -8.25], [-68.75, -8.5], [-68.85, -8.75], [-68.75, -9.0], [-68.97, -9.53], [-69.32, -9.68], [-69.47, -10.03], [-69.82, -10.18], [-69.97, -10.53], [-70.5, -10.75], [-71.03, -10.53], [-71.18, -10.18], [-71.25, -10.15], [-71.5, -10.25], [-72.03, -10.03], [-72.18, -9.68], [-72.3, -9.62], [-72.47, -10.03], [-72.82, -10.18], [-72.97, -10.53], [-73.32, -10.68], [-73.47, -11.03], [-74.0, -11.25], [-74.25, -11.15], [-74.5, -11.25], [-75.03, -11.03], [-75.25, -10.5], [-75.03, -9.97], [-74.68, -9.82], [-74.65, -9.75], [-74.75, -9.5], [-74.65, -9.25], [-74.68, -9.18], [-75.03, -9.03], [-75.25, -8.5], [-75.04, -8.0], [-75.25, -7.5], [-75.03, -6.97]]]]}, "2018-08-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -6.97], [-74.68, -6.82], [-74.53, -6.47], [-74.0, -6.25], [-73.47, -6.47], [-73.25, -7.0], [-73.35, -7.25], [-73.32, -7.32], [-72.97, -7.47], [-72.8, -7.88], [-72.5, -7.75], [-71.97, -7.97], [-71.82, -8.32], [-71.75, -8.35], [-71.5, -8.25], [-71.25, -8.35], [-71.0, -8.25], [-70.47, -8.47], [-70.3, -8.88], [-70.18, -8.82], [-70.15, -8.75], [-70.25, -8.5], [-70.15, -8.25], [-70.25, -8.0], [-70.03, -7.47], [-69.5, -7.25], [-68.97, -7.47], [-68.75, -8.0], [-68.85, -8.25], [-68.75, -8.5], [-68.85, -8.75], [-68.75, -9.0], [-68.97, -9.53], [-69.32, -9.68], [-69.47, -10.03], [-69.82, -10.18], [-69.97, -10.53], [-70.5, -10.75], [-71.03, -10.53], [-71.18, -10.18], [-71.25, -10.15], [-71.5, -10.25], [-72.03, -10.03], [-72.18, -9.68], [-72.3, -9.62], [-72.47, -10.03], [-72.82, -10.18], [-72.97, -10.53], [-73.32, -10.68], [-73.47, -11.03], [-74.0, -11.25], [-74.25, -11.15], [-74.5, -11.25], [-75.03, -11.03], [-75.25, -10.5], [-75.03, -9.97], [-74.68, -9.82], [-74.65, -9.75], [-74.75, -9.5], [-74.65, -9.25], [-74.68, -9.18], [-75.03, -9.03], [-75.25, -8.5], [-75.04, -8.0], [-75.25, -7.5], [-75.03, -6.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.0278296747083004}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.034842815390414}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.83968198161756, 21.180350382776055, 23.54369642941316]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.21389993468108, 18.218123947746733, 18.979937127701135]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6134472595557363, -4.398733201431842, -2.0923479851836646]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4383628492410594, -6.0278296747083004, -2.6339218868221224]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6454663202994102, -2.906444591693561, -1.4589419105722234]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.102855333139918, -3.3695107181323993, -1.6427901684242903]}}