{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:55:04.296159", "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-Apr-04_to_2025-Apr-06_306.5_-35.5"}, "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": 2025040000166}, "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": "April 04 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2025"}, "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": 208496.19119871498}, "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", "Uruguay"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Atlantic-Ocean", "S.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": ["Rio de La Plata", "South Atlantic Ocean"]}, "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": -35.5}, "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": 306.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 303.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 309.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -32.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -35.53], [-57.25, -35.0], [-57.03, -34.47], [-56.5, -34.25], [-56.25, -34.35], [-56.18, -34.32], [-56.03, -33.97], [-55.68, -33.82], [-55.65, -33.75], [-55.75, -33.5], [-55.53, -32.97], [-55.18, -32.82], [-55.03, -32.47], [-54.5, -32.25], [-53.97, -32.47], [-53.82, -32.82], [-53.75, -32.85], [-53.5, -32.75], [-52.97, -32.97], [-52.8, -33.38], [-52.5, -33.25], [-52.25, -33.35], [-52.0, -33.25], [-51.75, -33.35], [-51.5, -33.25], [-51.25, -33.35], [-51.0, -33.25], [-50.75, -33.35], [-50.5, -33.25], [-49.97, -33.47], [-49.75, -34.0], [-49.85, -34.25], [-49.75, -34.5], [-49.85, -34.75], [-49.75, -35.0], [-49.85, -35.25], [-49.75, -35.5], [-49.97, -36.03], [-50.5, -36.25], [-50.75, -36.15], [-50.82, -36.18], [-50.85, -36.25], [-50.75, -36.5], [-50.85, -36.75], [-50.75, -37.0], [-50.85, -37.25], [-50.75, -37.5], [-50.85, -37.75], [-50.75, -38.0], [-50.85, -38.25], [-50.75, -38.5], [-50.97, -39.03], [-51.32, -39.18], [-51.47, -39.53], [-52.0, -39.75], [-52.53, -39.53], [-52.75, -39.0], [-52.65, -38.75], [-52.68, -38.68], [-52.75, -38.65], [-53.0, -38.75], [-53.53, -38.53], [-53.68, -38.18], [-54.03, -38.03], [-54.18, -37.68], [-54.25, -37.65], [-54.5, -37.75], [-54.75, -37.65], [-55.0, -37.75], [-55.53, -37.53], [-55.75, -37.0], [-55.65, -36.75], [-55.75, -36.5], [-55.65, -36.25], [-55.75, -36.0], [-55.65, -35.75], [-55.68, -35.68], [-55.75, -35.65], [-56.0, -35.75], [-56.25, -35.65], [-56.5, -35.75], [-57.03, -35.53]]]]}, "2025-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -35.53], [-57.25, -35.0], [-57.03, -34.47], [-56.5, -34.25], [-56.25, -34.35], [-56.18, -34.32], [-56.03, -33.97], [-55.68, -33.82], [-55.65, -33.75], [-55.75, -33.5], [-55.53, -32.97], [-55.18, -32.82], [-55.03, -32.47], [-54.5, -32.25], [-53.97, -32.47], [-53.82, -32.82], [-53.75, -32.85], [-53.5, -32.75], [-52.97, -32.97], [-52.8, -33.38], [-52.5, -33.25], [-52.25, -33.35], [-52.0, -33.25], [-51.75, -33.35], [-51.5, -33.25], [-51.25, -33.35], [-51.0, -33.25], [-50.75, -33.35], [-50.5, -33.25], [-49.97, -33.47], [-49.75, -34.0], [-49.85, -34.25], [-49.75, -34.5], [-49.85, -34.75], [-49.75, -35.0], [-49.85, -35.25], [-49.75, -35.5], [-49.97, -36.03], [-50.5, -36.25], [-50.75, -36.15], [-50.82, -36.18], [-50.85, -36.25], [-50.75, -36.5], [-50.85, -36.75], [-50.75, -37.0], [-50.85, -37.25], [-50.75, -37.5], [-50.85, -37.75], [-50.75, -38.0], [-50.85, -38.25], [-50.75, -38.5], [-50.97, -39.03], [-51.32, -39.18], [-51.47, -39.53], [-52.0, -39.75], [-52.53, -39.53], [-52.75, -39.0], [-52.65, -38.75], [-52.68, -38.68], [-52.75, -38.65], [-53.0, -38.75], [-53.53, -38.53], [-53.68, -38.18], [-54.03, -38.03], [-54.18, -37.68], [-54.25, -37.65], [-54.5, -37.75], [-54.75, -37.65], [-55.0, -37.75], [-55.53, -37.53], [-55.75, -37.0], [-55.65, -36.75], [-55.75, -36.5], [-55.65, -36.25], [-55.75, -36.0], [-55.65, -35.75], [-55.68, -35.68], [-55.75, -35.65], [-56.0, -35.75], [-56.25, -35.65], [-56.5, -35.75], [-57.03, -35.53]]]]}, "2025-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.03, -35.53], [-57.25, -35.0], [-57.03, -34.47], [-56.5, -34.25], [-56.25, -34.35], [-56.18, -34.32], [-56.03, -33.97], [-55.68, -33.82], [-55.65, -33.75], [-55.75, -33.5], [-55.53, -32.97], [-55.18, -32.82], [-55.03, -32.47], [-54.5, -32.25], [-53.97, -32.47], [-53.82, -32.82], [-53.75, -32.85], [-53.5, -32.75], [-52.97, -32.97], [-52.8, -33.38], [-52.5, -33.25], [-52.25, -33.35], [-52.0, -33.25], [-51.75, -33.35], [-51.5, -33.25], [-51.25, -33.35], [-51.0, -33.25], [-50.75, -33.35], [-50.5, -33.25], [-49.97, -33.47], [-49.75, -34.0], [-49.85, -34.25], [-49.75, -34.5], [-49.85, -34.75], [-49.75, -35.0], [-49.85, -35.25], [-49.75, -35.5], [-49.97, -36.03], [-50.5, -36.25], [-50.75, -36.15], [-50.82, -36.18], [-50.85, -36.25], [-50.75, -36.5], [-50.85, -36.75], [-50.75, -37.0], [-50.85, -37.25], [-50.75, -37.5], [-50.85, -37.75], [-50.75, -38.0], [-50.85, -38.25], [-50.75, -38.5], [-50.97, -39.03], [-51.32, -39.18], [-51.47, -39.53], [-52.0, -39.75], [-52.53, -39.53], [-52.75, -39.0], [-52.65, -38.75], [-52.68, -38.68], [-52.75, -38.65], [-53.0, -38.75], [-53.53, -38.53], [-53.68, -38.18], [-54.03, -38.03], [-54.18, -37.68], [-54.25, -37.65], [-54.5, -37.75], [-54.75, -37.65], [-55.0, -37.75], [-55.53, -37.53], [-55.75, -37.0], [-55.65, -36.75], [-55.75, -36.5], [-55.65, -36.25], [-55.75, -36.0], [-55.65, -35.75], [-55.68, -35.68], [-55.75, -35.65], [-56.0, -35.75], [-56.25, -35.65], [-56.5, -35.75], [-57.03, -35.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.516602909247979}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.968611514620232}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.775037368713129, 15.345222512976648, 16.31197857531197]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.98537089029952, 11.183283742268884, 13.292506154378259]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.770908130371605, -4.106748111540321, -3.028178301948766]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.828668062159636, -7.516602909247979, -4.563693570164958]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.7198194024619786, -2.3335143030305843, -1.737899300499611]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.2263515472368245, -3.496234619551208, -2.312394603848999]}}