{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:06:27.414863", "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-Jul-27_to_2025-Jul-31_261.0_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": 2025070001031}, "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": "July 27 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 31 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": 92461.02645970785}, "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": ["Mexico"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 261.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "261.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 259.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 263.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-97.53, 17.47], [-97.68, 17.82], [-98.03, 17.97], [-98.25, 18.5], [-98.12, 18.8], [-98.25, 18.85], [-98.5, 18.75], [-99.03, 18.97], [-99.18, 19.32], [-99.25, 19.35], [-99.5, 19.25], [-100.03, 19.47], [-100.18, 19.82], [-100.53, 19.97], [-100.75, 20.5], [-100.65, 20.75], [-100.68, 20.82], [-101.03, 20.97], [-101.18, 21.32], [-101.53, 21.47], [-101.75, 22.0], [-101.53, 22.53], [-101.0, 22.75], [-100.75, 22.65], [-100.5, 22.75], [-100.2, 22.62], [-100.15, 22.75], [-100.25, 23.0], [-100.03, 23.53], [-99.5, 23.75], [-98.97, 23.53], [-98.75, 23.0], [-98.85, 22.75], [-98.82, 22.68], [-98.75, 22.65], [-98.5, 22.75], [-97.97, 22.53], [-97.82, 22.18], [-97.47, 22.03], [-97.32, 21.68], [-96.97, 21.53], [-96.82, 21.18], [-96.75, 21.15], [-96.5, 21.25], [-95.97, 21.03], [-95.75, 20.5], [-95.97, 19.97], [-96.37, 19.8], [-96.25, 19.5], [-96.35, 19.25], [-96.25, 19.0], [-96.46, 18.5], [-96.25, 18.0], [-96.47, 17.47], [-97.0, 17.25], [-97.53, 17.47]], [[-98.32, 20.32], [-98.35, 20.25], [-98.32, 20.18], [-98.25, 20.15], [-98.18, 20.18], [-98.15, 20.25], [-98.18, 20.32], [-98.25, 20.35], [-98.32, 20.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America", "S.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.52999999999997, 21.47], [-101.75, 22.0], [-101.52999999999997, 22.53], [-101.0, 22.75], [-100.75, 22.65], [-100.5, 22.75], [-100.19999999999999, 22.62], [-100.14999999999998, 22.75], [-100.25, 23.0], [-100.02999999999997, 23.53], [-99.5, 23.75], [-98.97000000000003, 23.53], [-98.75, 23.0], [-98.85000000000002, 22.75], [-98.82, 22.68], [-98.75, 22.65], [-98.5, 22.75], [-97.97000000000003, 22.53], [-97.82, 22.18], [-97.47000000000003, 22.03], [-97.32, 21.68], [-96.97000000000003, 21.53], [-96.75, 21.0], [-96.97000000000003, 20.47], [-97.5, 20.25], [-97.75, 20.35], [-98.0, 20.25], [-97.5, 20.04], [-97.0, 20.25], [-96.47000000000003, 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[20.592112325032588, 20.44167742985553, 20.53977483113607, 19.184569295247456, 18.491098276774096]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.957597351074241, 13.868025716145837, 13.076228078206384, 13.907891845703148, 17.13418095906576]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5597197842241552, -1.7357521235344393, -1.6819517103315693, -1.3466562990137376, -1.132222277911626]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.499081140503108, -2.350723145913207, -2.384729203555594, -1.6633651730460883, -1.3110986419573578]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3824912929608877, 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