{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:39.019650", "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": "2026-Jun-19_to_2026-Jun-24_316.5_-16.5"}, "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": 2026060000610}, "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": "June 19 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 24 2026"}, "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": 276199.7510711991}, "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": -16.5}, "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": 316.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "316.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 314.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 321.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-06-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.75, -15.85], [-44.5, -15.75], [-44.25, -15.85], [-44.0, -15.75], [-43.75, -15.85], [-43.5, -15.75], [-43.25, -15.85], [-43.0, -15.75], [-42.47, -15.97], [-42.32, -16.32], [-42.25, -16.35], [-42.0, -16.25], [-41.75, -16.35], [-41.5, -16.25], [-40.97, -16.47], [-40.82, -16.82], [-40.75, -16.85], [-40.68, -16.82], [-40.53, -16.47], [-40.0, -16.25], [-39.47, -16.47], [-39.32, -16.82], [-38.97, -16.97], [-38.75, -17.5], [-38.97, -18.03], [-39.32, -18.18], [-39.35, -18.25], [-39.25, -18.5], [-39.35, -18.75], [-39.25, -19.0], [-39.47, -19.53], [-39.82, -19.68], [-39.97, -20.03], [-40.5, -20.25], [-41.03, -20.03], [-41.25, -19.5], [-41.15, -19.25], [-41.18, -19.18], [-41.25, -19.15], [-41.5, -19.25], [-42.03, -19.03], [-42.25, -18.5], [-42.15, -18.25], [-42.18, -18.18], [-42.25, -18.15], [-42.5, -18.25], [-42.75, -18.15], [-43.0, -18.25], [-43.25, -18.15], [-43.32, -18.18], [-43.47, -18.53], [-44.0, -18.75], [-44.25, -18.65], [-44.5, -18.75], [-45.03, -18.53], [-45.25, -18.0], [-45.15, -17.75], [-45.18, -17.68], [-45.25, -17.65], [-45.5, -17.75], [-46.03, -17.53], [-46.25, -17.0], [-46.03, -16.47], [-45.68, -16.32], [-45.53, -15.97], [-45.0, -15.75], [-44.75, -15.85]]], [[[-39.53, -13.53], [-39.75, -13.0], [-39.53, -12.47], [-39.0, -12.25], [-38.47, -12.47], [-38.25, -13.0], [-38.47, -13.53], [-39.0, -13.75], [-39.53, -13.53]]]]}, "2026-06-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.0, -15.75], [-44.75, -15.85], [-44.5, -15.75], [-44.25, -15.85], [-44.0, -15.75], [-43.75, -15.85], [-43.62, -15.8], [-43.75, -15.5], [-43.65, -15.25], [-43.75, -15.0], [-43.53, -14.47], [-43.0, -14.25], [-42.7, -14.38], [-42.65, -14.25], [-42.75, -14.0], [-42.53, -13.47], [-42.18, -13.32], [-42.03, -12.97], [-41.62, -12.8], [-41.75, -12.5], [-41.65, -12.25], [-41.75, -12.0], [-41.53, -11.47], [-41.0, -11.25], [-40.75, -11.35], [-40.5, -11.25], [-39.97, -11.47], [-39.82, -11.82], [-39.47, -11.97], [-39.3, -12.38], [-39.0, -12.25], [-38.47, -12.47], [-38.25, -13.0], [-38.47, -13.53], [-38.82, -13.68], [-38.85, -13.75], [-38.75, -14.0], [-38.85, -14.25], [-38.75, -14.5], [-38.85, -14.75], [-38.75, -15.0], [-38.85, -15.25], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.85, -17.25], [-38.75, -17.5], [-38.97, -18.03], [-39.32, -18.18], [-39.35, -18.25], [-39.25, -18.5], [-39.35, -18.75], [-39.25, -19.0], [-39.47, -19.53], [-39.82, -19.68], [-39.97, -20.03], [-40.5, -20.25], [-41.03, -20.03], [-41.25, -19.5], [-41.15, -19.25], [-41.18, -19.18], [-41.25, -19.15], [-41.5, -19.25], [-42.03, -19.03], [-42.18, -18.68], [-42.53, -18.53], [-42.68, -18.18], [-42.75, -18.15], [-43.0, -18.25], [-43.25, -18.15], [-43.32, -18.18], [-43.47, -18.53], [-44.0, -18.75], [-44.25, -18.65], [-44.5, -18.75], [-45.03, -18.53], [-45.25, -18.0], [-45.15, -17.75], [-45.18, -17.68], [-45.25, -17.65], [-45.5, -17.75], [-46.03, -17.53], [-46.25, -17.0], [-46.03, -16.47], [-45.68, -16.32], [-45.53, -15.97], [-45.0, -15.75]]]]}, "2026-06-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.0, -15.75], [-44.75, -15.85], [-44.5, -15.75], [-44.25, -15.85], [-44.0, -15.75], [-43.75, -15.85], [-43.62, -15.8], [-43.75, -15.5], [-43.65, -15.25], [-43.75, -15.0], [-43.53, -14.47], [-43.0, -14.25], [-42.7, -14.38], [-42.65, -14.25], [-42.75, -14.0], [-42.53, -13.47], [-42.18, -13.32], [-42.03, -12.97], [-41.62, -12.8], [-41.75, -12.5], [-41.65, -12.25], [-41.75, -12.0], [-41.53, -11.47], [-41.0, -11.25], [-40.75, -11.35], [-40.5, -11.25], [-39.97, -11.47], [-39.82, -11.82], [-39.47, -11.97], [-39.3, -12.38], [-39.18, -12.32], [-39.03, -11.97], [-38.5, -11.75], [-37.97, -11.97], [-37.75, -12.5], [-37.97, -13.03], [-38.32, -13.18], [-38.47, -13.53], [-38.82, -13.68], [-38.85, -13.75], [-38.75, -14.0], [-38.85, -14.25], [-38.75, -14.5], [-38.85, -14.75], [-38.75, -15.0], [-38.85, -15.25], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.85, -17.25], [-38.75, -17.5], [-38.97, -18.03], [-39.32, -18.18], [-39.35, -18.25], [-39.25, -18.5], [-39.35, -18.75], [-39.25, -19.0], [-39.47, -19.53], [-39.82, -19.68], [-39.97, -20.03], [-40.5, -20.25], [-41.03, -20.03], [-41.25, -19.5], [-41.15, -19.25], [-41.18, -19.18], [-41.25, -19.15], [-41.5, -19.25], [-42.03, -19.03], [-42.18, -18.68], [-42.53, -18.53], [-42.68, -18.18], [-42.75, -18.15], [-43.0, -18.25], [-43.25, -18.15], [-43.32, -18.18], [-43.47, -18.53], [-44.0, -18.75], [-44.25, -18.65], [-44.5, -18.75], [-45.03, -18.53], [-45.25, -18.0], [-45.15, -17.75], [-45.18, -17.68], [-45.25, -17.65], [-45.5, -17.75], [-46.03, -17.53], [-46.25, -17.0], [-46.03, -16.47], [-45.68, -16.32], [-45.53, -15.97], [-45.0, -15.75]]]]}, "2026-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.53, -17.53], [-45.75, -17.0], [-45.53, -16.47], [-45.0, -16.25], [-44.75, -16.35], [-44.5, -16.25], [-44.25, -16.35], [-44.18, -16.32], [-44.03, -15.97], [-43.62, -15.8], [-43.75, -15.5], [-43.65, -15.25], [-43.75, -15.0], [-43.53, -14.47], [-43.0, -14.25], [-42.7, -14.38], [-42.65, -14.25], [-42.75, -14.0], [-42.53, -13.47], [-42.18, -13.32], [-42.03, -12.97], [-41.62, -12.8], [-41.75, -12.5], [-41.65, -12.25], [-41.75, -12.0], [-41.53, -11.47], [-41.0, -11.25], [-40.75, -11.35], [-40.5, -11.25], [-39.97, -11.47], [-39.82, -11.82], [-39.47, -11.97], [-39.25, -12.5], [-39.03, -11.97], [-38.5, -11.75], [-37.97, -11.97], [-37.75, -12.5], [-37.97, -13.03], [-38.5, -13.25], [-38.93, -13.07], [-38.75, -13.5], [-38.85, -13.75], [-38.75, -14.0], [-38.85, -14.25], [-38.75, -14.5], [-38.85, -14.75], [-38.75, -15.0], [-38.85, -15.25], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.85, -17.25], [-38.75, -17.5], [-38.97, -18.03], [-39.32, -18.18], [-39.47, -18.53], [-40.0, -18.75], [-40.5, -18.54], [-41.0, -18.75], [-41.25, -18.65], [-41.5, -18.75], [-41.75, -18.65], [-42.0, -18.75], [-42.53, -18.53], [-42.7, -18.12], [-43.0, -18.25], [-43.53, -18.03], [-43.68, -17.68], [-43.75, -17.65], [-44.0, -17.75], [-44.25, -17.65], [-44.5, -17.75], [-44.75, -17.65], [-45.0, -17.75], [-45.53, -17.53]], [[-39.37, -12.8], [-39.07, -12.93], [-39.25, -12.5], [-39.37, -12.8]]]]}, "2026-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-45.53, -17.53], [-45.75, -17.0], [-45.53, -16.47], [-45.0, -16.25], [-44.75, -16.35], [-44.5, -16.25], [-44.25, -16.35], [-44.18, -16.32], [-44.03, -15.97], [-43.62, -15.8], [-43.75, -15.5], [-43.65, -15.25], [-43.75, -15.0], [-43.53, -14.47], [-43.0, -14.25], [-42.7, -14.38], [-42.65, -14.25], [-42.75, -14.0], [-42.53, -13.47], [-42.18, -13.32], [-42.03, -12.97], [-41.5, -12.75], [-40.97, -12.97], [-40.75, -13.5], [-40.85, -13.75], [-40.75, -14.0], [-40.85, -14.25], [-40.82, -14.32], [-40.75, -14.35], [-40.68, -14.32], [-40.53, -13.97], [-40.18, -13.82], [-40.15, -13.75], [-40.25, -13.5], [-40.03, -12.97], [-39.5, -12.75], [-39.07, -12.93], [-39.25, -12.5], [-39.03, -11.97], [-38.5, -11.75], [-37.97, -11.97], [-37.75, -12.5], [-37.97, -13.03], [-38.5, -13.25], [-38.93, -13.07], [-38.75, -13.5], [-38.85, -13.75], [-38.75, -14.0], [-38.85, -14.25], [-38.75, -14.5], [-38.85, -14.75], [-38.75, -15.0], [-38.85, -15.25], [-38.75, -15.5], [-38.85, -15.75], [-38.75, -16.0], [-38.85, -16.25], [-38.75, -16.5], [-38.85, -16.75], [-38.75, -17.0], [-38.97, -17.53], [-39.5, -17.75], [-40.03, -17.53], [-40.18, -17.18], [-40.25, -17.15], [-40.5, -17.25], [-40.75, -17.15], [-40.87, -17.2], [-40.75, -17.5], [-40.97, -18.03], [-41.32, -18.18], [-41.47, -18.53], [-42.0, -18.75], [-42.53, -18.53], [-42.7, -18.12], [-43.0, -18.25], [-43.53, -18.03], [-43.68, -17.68], [-43.75, -17.65], [-44.0, -17.75], [-44.25, -17.65], [-44.5, -17.75], [-44.75, -17.65], [-45.0, -17.75], [-45.53, -17.53]]]]}, "2026-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.25, -16.5], [-44.03, -15.97], [-43.5, -15.75], [-43.0, -15.96], [-42.68, -15.82], [-42.65, -15.75], [-42.75, -15.5], [-42.53, -14.97], [-42.0, -14.75], [-41.47, -14.97], [-41.25, -15.5], [-41.35, -15.75], [-41.25, -16.0], [-41.35, -16.25], [-41.25, -16.5], [-41.35, -16.75], [-41.25, -17.0], [-41.47, -17.53], [-42.0, -17.75], [-42.53, -17.53], [-42.68, -17.18], [-43.0, -17.04], [-43.5, -17.25], [-44.03, -17.03], [-44.25, -16.5]]], [[[-42.03, -14.53], [-42.25, -14.0], [-42.03, -13.47], [-41.5, -13.25], [-40.97, -13.47], [-40.75, -14.0], [-40.97, -14.53], [-41.5, -14.75], [-42.03, -14.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5566729067418237}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.103644904921085}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.179673767089866, 18.805043571582758, 18.72162478593941, 19.214816029866483, 18.983845214843825, 19.20177575974236]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.57379811604818, 15.74673995971682, 16.05398330688479, 16.455874379475915, 16.486779785156273, 18.249243672688806]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8538112197590635, -2.2749895885338036, -2.382610290150378, -1.8759042964453043, -1.8647322203103125, -1.6220468661469372]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.493624074956074, -3.5566729067418237, -3.223768600033793, -2.8067513990761768, -2.8166202393660456, -1.8720024887680324]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6076499583398192, -2.103875106102981, -2.2047664478933067, -1.7203556715996204, -1.667259330046681, -1.333957108343286]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.375525413256184, -2.9268056188939013, -3.173083070800607, -2.5607405609449, -2.2853263662160597, -1.5891967326226097]}}