{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:06:14.161026", "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": "2016-Sep-25_to_2016-Sep-30_315.5_-10.5"}, "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": 2016090000605}, "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 25 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 30 2016"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 160371.72991777307}, "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": -10.5}, "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": 315.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 318.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-47.25, -12.5], [-47.03, -11.97], [-46.5, -11.75], [-46.25, 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[-43.5, -14.25], [-43.75, -14.15], [-44.0, -14.25], [-44.25, -14.15], [-44.5, -14.25], [-45.03, -14.03], [-45.18, -13.68], [-45.25, -13.65], [-45.5, -13.75], [-45.75, -13.65], [-46.0, -13.75], [-46.53, -13.53], [-46.68, -13.18], [-47.03, -13.03], [-47.25, -12.5], [-47.12, -12.2], [-47.53, -12.03], [-47.68, -11.68], [-48.03, -11.53], [-48.25, -11.0]]]]}, "2016-09-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-48.25, -11.0], [-48.03, -10.47], [-47.5, -10.25], [-47.25, -10.35], [-47.0, -10.25], [-46.75, -10.35], [-46.68, -10.32], [-46.53, -9.97], [-46.0, -9.75], [-45.75, -9.85], [-45.5, -9.75], [-45.25, -9.85], [-45.18, -9.82], [-45.03, -9.47], [-44.5, -9.25], [-44.25, -9.35], [-44.0, -9.25], [-43.47, -9.47], [-43.25, -10.0], [-43.35, -10.25], [-43.32, -10.32], [-43.25, -10.35], [-43.0, -10.25], [-42.47, -10.47], [-42.32, -10.82], [-42.25, -10.85], [-42.0, -10.75], [-41.47, -10.97], [-41.25, -11.5], [-41.47, -12.03], [-41.82, -12.18], [-41.85, -12.25], [-41.75, 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[-44.0, -12.25], [-44.53, -12.03], [-44.75, -11.5], [-44.65, -11.25], [-44.68, -11.18], [-45.03, -11.03], [-45.25, -10.5], [-45.15, -10.25], [-45.25, -10.0], [-45.03, -9.47]]]]}, "2016-09-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.03, -9.47], [-44.5, -9.25], [-43.97, -9.47], [-43.82, -9.82], [-43.47, -9.97], [-43.25, -10.5], [-43.47, -11.03], [-44.0, -11.25], [-44.25, -11.15], [-44.5, -11.25], [-45.03, -11.03], [-45.25, -10.5], [-45.15, -10.25], [-45.25, -10.0], [-45.03, -9.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.412733442967465}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3894213428722946}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.2446036397497, 23.532580313377196, 23.82193086536023, 24.87187094721662, 26.572532304052345, 27.00353493301958]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.05450857311297, 20.974948578948442, 20.798489945285496, 20.539556080671503, 21.836643787662524, 26.467765603274927]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.512979385785229, -4.01778327458873, -3.806251150755562, -2.8812247093294956, -1.8806918649322684, -2.2347036050984834]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.646886896285423, -5.412733442967465, -5.355004555649543, -4.075508120238794, -2.204451631642428, -2.566266191968225]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3845829411516164, 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