{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:08:14.129609", "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-Oct-07_to_2025-Oct-09_299.0_-20.5"}, "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": 2025100000255}, "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": "October 07 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 09 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": 80100.72147933408}, "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": ["Argentina", "Bolivia, Plurinational State of", "Paraguay"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America", "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": -20.5}, "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": 299.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-62.53, -18.97], [-62.0, -18.75], [-61.75, -18.85], [-61.5, -18.75], [-60.97, -18.97], [-60.82, -19.32], [-60.75, -19.35], [-60.5, -19.25], [-59.97, -19.47], [-59.75, -20.0], [-59.85, -20.25], [-59.75, -20.5], [-59.85, -20.75], [-59.82, -20.82], [-59.47, -20.97], [-59.25, -21.5], [-59.35, -21.75], [-59.25, -22.0], [-59.35, -22.25], [-59.25, -22.5], [-59.35, -22.75], [-59.25, -23.0], [-59.35, -23.25], [-59.25, -23.5], [-59.35, -23.75], [-59.25, -24.0], [-59.35, -24.25], [-59.25, -24.5], [-59.47, -25.03], [-59.82, -25.18], [-59.97, -25.53], [-60.5, -25.75], [-60.75, -25.65], [-61.0, -25.75], [-61.53, -25.53], [-61.75, -25.0], [-61.65, -24.75], [-61.75, -24.5], [-61.53, -23.97], [-61.18, -23.82], [-61.15, -23.75], [-61.25, -23.5], [-61.12, -23.2], [-61.53, -23.03], [-61.75, -22.5], [-61.65, -22.25], [-61.75, -22.0], [-61.65, -21.75], [-61.75, -21.5], [-61.65, -21.25], [-61.75, -21.0], [-61.65, -20.75], [-61.68, -20.68], [-62.03, -20.53], [-62.18, -20.18], [-62.53, -20.03], [-62.75, -19.5], [-62.53, -18.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.52999999999997, -20.03], [-62.75, -19.5], [-62.52999999999997, -18.97], [-62.0, -18.75], [-61.75, -18.85], [-61.5, -18.75], [-60.97000000000003, -18.97], [-60.81999999999999, -19.32], [-60.75, -19.35], [-60.5, -19.25], [-59.97000000000003, -19.47], [-59.75, -20.0], [-59.85000000000002, -20.25], [-59.75, -20.5], [-59.85000000000002, -20.75], [-59.81999999999999, -20.82], [-59.47000000000003, -20.97], [-59.25, -21.5], [-59.35000000000002, -21.75], [-59.25, -22.0], [-59.35000000000002, -22.25], [-59.25, -22.5], [-59.35000000000002, -22.75], [-59.25, -23.0], [-59.35000000000002, -23.25], [-59.25, -23.5], [-59.35000000000002, -23.75], [-59.25, -24.0], [-59.35000000000002, -24.25], [-59.25, -24.5], [-59.47000000000003, -25.03], [-59.81999999999999, -25.18], [-59.97000000000003, -25.53], [-60.5, -25.75], [-60.75, -25.65], [-61.0, -25.75], [-61.52999999999997, -25.53], [-61.75, -25.0], [-61.64999999999998, -24.75], [-61.75, -24.5], [-61.52999999999997, -23.97], [-61.18000000000001, -23.82], [-61.14999999999998, -23.75], [-61.25, -23.5], [-61.120000000000005, -23.2], [-61.52999999999997, -23.03], [-61.75, -22.5], [-61.64999999999998, -22.25], [-61.75, -22.0], [-61.64999999999998, -21.75], [-61.75, -21.5], [-61.64999999999998, -21.25], [-61.75, -21.0], [-61.64999999999998, -20.75], [-61.68000000000001, -20.68], [-62.02999999999997, -20.53], [-62.18000000000001, -20.18], [-62.52999999999997, -20.03]]]]}, "2025-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.52999999999997, -20.03], [-62.75, -19.5], [-62.52999999999997, -18.97], [-62.0, -18.75], [-61.75, -18.85], [-61.5, -18.75], [-60.97000000000003, -18.97], [-60.81999999999999, -19.32], [-60.75, -19.35], 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"evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.228383273170152, 19.56724882579988, 20.55607376098635]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.15610020955404, 17.199700927734398, 18.69059524536135]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.967527986655559, -6.729898620045093, -6.036863955070869]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.990424519190526, -7.139609445939527, -6.9606747215008795]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.814564948541197, -1.544206532332112, -1.3975669118450362]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0703472810725185, -1.711392558311344, -1.6515443907999277]}}