{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:03:25.321920", "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-Feb-10_to_2025-Feb-13_286.5_-7.5"}, "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": 2025020000280}, "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": "February 10 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 13 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 55147.21579221411}, "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", "Peru"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -7.5}, "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": 286.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 285.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 288.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-75.03, -6.47], [-74.5, -6.25], [-74.25, -6.35], [-74.0, -6.25], [-73.75, -6.35], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.75, -6.35], [-72.5, -6.25], [-71.97, -6.47], [-71.82, -6.82], [-71.47, -6.97], [-71.25, -7.5], [-71.47, -8.03], [-71.82, -8.18], [-71.97, -8.53], [-72.5, -8.75], [-72.75, -8.65], [-72.82, -8.68], [-72.97, -9.03], [-73.5, -9.25], [-73.75, -9.15], [-74.0, -9.25], [-74.53, -9.03], [-74.68, -8.68], [-75.03, -8.53], [-75.25, -8.0], [-75.15, -7.75], [-75.25, -7.5], [-75.15, -7.25], [-75.25, -7.0], [-75.03, -6.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America", "N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -7.5], [-75.14999999999998, -7.25], [-75.25, -7.0], [-75.02999999999997, -6.47], [-74.5, -6.25], [-73.97000000000003, -6.47], [-73.82, -6.82], [-73.75, -6.85], [-73.5, -6.75], [-73.25, -6.85], [-73.0, -6.75], [-72.75, -6.85], [-72.5, -6.75], [-72.25, -6.85], [-72.0, -6.75], [-71.47000000000003, -6.97], [-71.25, -7.5], [-71.47000000000003, -8.03], [-71.82, -8.18], [-71.97000000000003, -8.53], [-72.5, -8.75], [-72.75, -8.65], [-72.82, -8.68], [-72.97000000000003, -9.03], [-73.5, -9.25], [-73.75, -9.15], [-74.0, -9.25], [-74.52999999999997, -9.03], [-74.68, -8.68], [-75.02999999999997, -8.53], [-75.25, -8.0], [-75.14999999999998, -7.75], [-75.25, -7.5]]]]}, "2025-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -7.5], [-75.14999999999998, -7.25], [-75.25, -7.0], [-75.02999999999997, -6.47], [-74.5, -6.25], [-74.25, -6.35], [-74.0, -6.25], [-73.75, -6.35], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.75, -6.35], [-72.5, -6.25], [-71.97000000000003, -6.47], [-71.82, -6.82], [-71.47000000000003, -6.97], [-71.25, -7.5], [-71.47000000000003, -8.03], [-71.82, -8.18], [-71.97000000000003, -8.53], [-72.5, -8.75], [-72.75, -8.65], [-72.82, -8.68], [-72.97000000000003, -9.03], [-73.5, -9.25], [-73.75, -9.15], [-74.0, -9.25], [-74.52999999999997, -9.03], [-74.68, -8.68], [-75.02999999999997, -8.53], [-75.25, -8.0], [-75.14999999999998, -7.75], [-75.25, -7.5]]]]}, "2025-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-75.25, -7.5], [-75.14999999999998, -7.25], [-75.25, -7.0], [-75.02999999999997, -6.47], [-74.5, -6.25], [-74.25, -6.35], [-74.0, -6.25], [-73.75, -6.35], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.75, -6.35], [-72.5, -6.25], [-71.97000000000003, -6.47], [-71.82, -6.82], [-71.47000000000003, -6.97], [-71.25, -7.5], [-71.47000000000003, -8.03], [-71.82, -8.18], [-71.97000000000003, -8.53], [-72.5, -8.75], [-72.75, -8.65], [-72.82, -8.68], [-72.97000000000003, -9.03], [-73.5, -9.25], [-73.75, -9.15], [-74.0, -9.25], [-74.52999999999997, -9.03], [-74.68, -8.68], [-75.02999999999997, -8.53], [-75.25, -8.0], [-75.14999999999998, -7.75], [-75.25, -7.5]]]]}, "2025-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.75, -7.0], [-74.52999999999997, -6.47], [-74.0, -6.25], [-73.75, -6.35], [-73.5, -6.25], [-73.25, -6.35], [-73.0, -6.25], [-72.75, -6.35], [-72.5, -6.25], [-71.97000000000003, -6.47], [-71.82, -6.82], [-71.47000000000003, -6.97], [-71.25, -7.5], [-71.47000000000003, -8.03], [-71.82, -8.18], [-71.97000000000003, -8.53], [-72.5, -8.75], [-72.75, -8.65], [-73.0, -8.75], [-73.25, -8.65], [-73.5, -8.75], [-74.02999999999997, -8.53], [-74.18, -8.18], [-74.52999999999997, -8.03], [-74.75, -7.5], [-74.64999999999998, -7.25], [-74.75, -7.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.45258352028668}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6546547389202908}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.228412155877947, 24.15511460480866, 23.73615996749311, 23.984810129801474]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.736311848958337, 23.60039545694991, 23.367991383870446, 23.782824452718103]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4464836158863932, -1.564399031372457, -1.9388650320856646, -1.6065891707001942]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6723556301249118, -1.9905586064849103, -2.45258352028668, -1.902746399726027]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.423214374538518, -1.5322961973425795, -1.8596182809455652, -1.56174791953787]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.673703260973321, -1.8245428402503105, -2.14742679807167, -1.9347503413928908]}}