{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:31.436001", "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-Nov-24_to_2018-Nov-26_312.0_-17.5"}, "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": 2018110000766}, "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": "November 24 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 26 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": 70913.77251759593}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.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": -17.5}, "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": 312.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "312.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 311.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 314.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -16.47], [-48.68, -16.32], [-48.53, -15.97], [-48.18, -15.82], [-48.15, -15.75], [-48.25, -15.5], [-48.03, -14.97], [-47.5, -14.75], [-47.25, -14.85], [-47.0, -14.75], [-46.47, -14.97], [-46.25, -15.5], [-46.35, -15.75], [-46.32, -15.82], [-45.97, -15.97], [-45.75, -16.5], [-45.85, -16.75], [-45.82, -16.82], [-45.47, -16.97], [-45.25, -17.5], [-45.47, -18.03], [-45.82, -18.18], [-45.97, -18.53], [-46.5, -18.75], [-46.75, -18.65], [-46.82, -18.68], [-46.97, -19.03], [-47.5, -19.25], [-48.03, -19.03], [-48.18, -18.68], [-48.53, -18.53], [-48.68, -18.18], [-49.03, -18.03], [-49.25, -17.5], [-49.15, -17.25], [-49.25, -17.0], [-49.03, -16.47]]]]}, "2018-11-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -16.47], [-48.68, -16.32], [-48.53, -15.97], [-48.18, -15.82], [-48.15, -15.75], [-48.25, -15.5], [-48.03, -14.97], [-47.5, -14.75], [-47.25, -14.85], [-47.0, -14.75], [-46.47, -14.97], [-46.25, -15.5], [-46.35, -15.75], [-46.32, -15.82], [-45.97, -15.97], [-45.75, -16.5], [-45.85, -16.75], [-45.82, -16.82], [-45.47, -16.97], [-45.25, -17.5], [-45.47, -18.03], [-45.82, -18.18], [-45.97, -18.53], [-46.5, -18.75], [-46.75, -18.65], [-46.82, -18.68], [-46.97, -19.03], [-47.5, -19.25], [-48.03, -19.03], [-48.18, -18.68], [-48.53, -18.53], [-48.68, -18.18], [-49.03, -18.03], [-49.25, -17.5], [-49.15, -17.25], [-49.25, -17.0], [-49.03, -16.47]]]]}, "2018-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-49.03, -16.47], [-48.68, -16.32], [-48.53, -15.97], [-48.18, -15.82], [-48.15, -15.75], [-48.25, -15.5], [-48.03, -14.97], [-47.5, -14.75], [-47.25, -14.85], [-47.0, -14.75], [-46.47, -14.97], [-46.25, -15.5], [-46.35, -15.75], [-46.32, -15.82], [-45.97, -15.97], [-45.75, -16.5], [-45.85, -16.75], [-45.82, -16.82], [-45.47, -16.97], [-45.25, -17.5], [-45.47, -18.03], [-45.82, -18.18], [-45.97, -18.53], [-46.5, -18.75], [-46.75, -18.65], [-46.82, -18.68], [-46.97, -19.03], [-47.5, -19.25], [-48.03, -19.03], [-48.18, -18.68], [-48.53, -18.53], [-48.68, -18.18], [-49.03, -18.03], [-49.25, -17.5], [-49.15, -17.25], [-49.25, -17.0], [-49.03, -16.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.03002628260424}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.7532725005870873}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.007954909885086, 20.094128543012403, 21.319398553154713]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.79432409461907, 18.911529235394028, 20.326311444725718]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.552236996330187, -3.4727722821650295, -2.2348082232660453]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.285308530536838, -4.03002628260424, -2.7185078032077286]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.811818287089518, -2.44430131048078, -1.5704738029029608]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.446045368510236, -2.6477021162154526, -1.9365007425004739]}}