{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:56:32.624349", "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": "2025-Aug-21_to_2025-Aug-25_310.0_-12.0"}, "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": 2025080000652}, "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 21 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 25 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 69534.98750063074}, "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", "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": -12.0}, "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": 310.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "310.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 309.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-50.53, -14.53], [-50.75, -14.0], [-50.53, -13.47], [-50.0, 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-10.35], [-48.5, -10.25], [-48.25, -10.35], [-48.0, -10.25], [-47.47, -10.47], [-47.25, -11.0], [-47.35, -11.25], [-47.32, -11.32], [-47.25, -11.35], [-47.0, -11.25], [-46.47, -11.47], [-46.25, -12.0], [-46.47, -12.53], [-47.0, -12.75], [-47.25, -12.65], [-47.32, -12.68], [-47.47, -13.03], [-48.0, -13.25], [-48.25, -13.15], [-48.5, -13.25], [-48.75, -13.15], [-49.0, -13.25], [-49.5, -13.04], [-49.82, -13.18], [-49.85, -13.25], [-49.82, -13.32], [-49.47, -13.47], [-49.25, -14.0], [-49.47, -14.53], [-50.0, -14.75], [-50.53, -14.53], [-50.68, -14.18], [-51.03, -14.03], [-51.25, -13.5], [-51.15, -13.25], [-51.25, -13.0], [-51.03, -12.47]]]]}, "2025-08-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-51.03, -12.47], [-50.68, -12.32], [-50.65, -12.25], [-50.75, -12.0], [-50.65, -11.75], [-50.75, -11.5], [-50.53, -10.97], [-50.0, -10.75], [-49.75, -10.85], [-49.5, -10.75], [-49.25, -10.85], [-49.18, -10.82], [-49.03, -10.47], [-48.5, -10.25], [-47.97, -10.47], [-47.82, 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[-49.87, -12.7], [-49.75, -13.0], [-49.85, -13.25], [-49.75, -13.5], [-49.97, -14.03], [-50.5, -14.25], [-51.03, -14.03], [-51.25, -13.5], [-51.15, -13.25], [-51.25, -13.0], [-51.03, -12.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.960089660873166}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.979764126278756}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.239458438806423, 25.79660982878312, 26.45856628417971, 26.898477857540854, 27.071240488688204]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.089851633707724, 24.84386342366537, 25.637195841471396, 25.965090688069665, 26.659302012125693]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.7989304846120628, -2.4393857841184112, -1.8938406954856102, -1.733353970975403, -1.7841753251328611]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.2229150384864056, -2.960089660873166, -2.4048420889816384, -2.2367878919125133, -2.0207822846068098]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7545336219012473, -2.3731645721715684, -1.841925647284093, -1.6988709495468728, -1.7510891263735489]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.07333458402517, -2.81998981099033, -2.362870980615528, -2.2221289753058495, -1.9135260661186595]}}