{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:52.900709", "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-Jun-29_to_2025-Jul-02_262.0_26.0"}, "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": 2025060000983}, "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 29 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 02 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": 130330.63348471643}, "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", "United States"]}, "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": 26.0}, "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": 262.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "262.0\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": 262.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-97.97, 23.47], [-98.5, 23.25], [-99.03, 23.47], [-99.18, 23.82], [-99.25, 23.85], [-99.5, 23.75], [-100.03, 23.97], [-100.18, 24.32], [-100.53, 24.47], [-100.75, 25.0], [-100.65, 25.25], [-100.68, 25.32], [-101.03, 25.47], [-101.18, 25.82], [-101.53, 25.97], [-101.75, 26.5], [-101.65, 26.75], [-101.75, 27.0], [-101.65, 27.25], [-101.75, 27.5], [-101.53, 28.03], [-101.0, 28.25], [-100.75, 28.15], [-100.5, 28.25], [-100.25, 28.15], [-100.0, 28.25], [-99.75, 28.15], [-99.5, 28.25], [-99.25, 28.15], [-99.18, 28.18], [-99.03, 28.53], [-98.5, 28.75], [-98.25, 28.65], [-98.0, 28.75], [-97.47, 28.53], [-97.25, 28.0], [-97.35, 27.75], [-97.25, 27.5], [-97.35, 27.25], [-97.32, 27.18], [-96.97, 27.03], [-96.75, 26.5], [-96.85, 26.25], [-96.75, 26.0], [-96.85, 25.75], [-96.75, 25.5], [-96.97, 24.97], [-97.32, 24.82], [-97.35, 24.75], [-97.25, 24.5], [-97.47, 23.97], [-97.82, 23.82], [-97.97, 23.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-06-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-98.5, 23.25], [-99.02999999999997, 23.47], [-99.25, 24.0], [-99.02999999999997, 24.53], [-98.5, 24.75], [-97.97000000000003, 24.53], [-97.75, 24.0], [-97.97000000000003, 23.47], [-98.5, 23.25]]], [[[-97.5, 24.75], [-98.02999999999997, 24.97], [-98.25, 25.5], [-98.02999999999997, 26.03], [-97.5, 26.25], [-96.97000000000003, 26.03], [-96.75, 25.5], [-96.97000000000003, 24.97], [-97.5, 24.75]]]]}, "2025-06-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-101.75, 27.0], [-101.64999999999998, 27.25], [-101.75, 27.5], [-101.52999999999997, 28.03], [-101.0, 28.25], [-100.75, 28.15], [-100.5, 28.25], [-100.25, 28.15], [-100.0, 28.25], [-99.75, 28.15], [-99.5, 28.25], [-99.25, 28.15], [-99.18, 28.18], [-99.02999999999997, 28.53], [-98.5, 28.75], [-98.25, 28.65], [-98.0, 28.75], [-97.47000000000003, 28.53], [-97.25, 28.0], [-97.35000000000002, 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daily evolution of mean t2m anomalies.", "value": [-1.8611131061384754, -3.861611213580129, -5.0669249329292825, -3.8897659710813755]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.487444941842739, -5.148700900908466, -6.4259328315721405, -5.826873602061653]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5219718113352663, -2.2594775533288414, -2.8613335816778394, -2.081311526591034]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6020893337365143, -3.216104521957198, -3.5700532545667842, -2.7343310302094763]}}