{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:37.060128", "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": "2026-Feb-23_to_2026-Feb-25_268.5_21.5"}, "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": 2026020000550}, "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 23 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 25 2026"}, "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": 104551.72611282689}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Central-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Gulf of Mexico"]}, "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": 21.5}, "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": 268.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "268.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 265.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 271.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.03, 17.97], [-95.25, 18.5], [-95.03, 19.03], [-94.5, 19.25], [-94.25, 19.15], [-94.18, 19.18], [-94.15, 19.25], [-94.25, 19.5], [-94.03, 20.03], [-93.68, 20.18], [-93.65, 20.25], [-93.75, 20.5], [-93.53, 21.03], [-93.0, 21.25], [-92.75, 21.15], [-92.68, 21.18], [-92.53, 21.53], [-92.18, 21.68], [-92.03, 22.03], [-91.5, 22.25], [-91.25, 22.15], [-91.0, 22.25], [-90.75, 22.15], [-90.5, 22.25], [-90.25, 22.15], [-90.0, 22.25], [-89.75, 22.15], [-89.5, 22.25], [-89.25, 22.15], [-89.0, 22.25], [-88.47, 22.03], [-88.25, 21.5], [-88.47, 20.97], [-89.0, 20.75], [-89.25, 20.85], [-89.5, 20.75], [-89.75, 20.85], [-89.82, 20.82], [-89.97, 20.47], [-90.32, 20.32], [-90.35, 20.25], [-90.25, 20.0], [-90.35, 19.75], [-90.25, 19.5], [-90.47, 18.97], [-90.82, 18.82], [-90.85, 18.75], [-90.75, 18.5], [-90.97, 17.97], [-91.5, 17.75], [-91.75, 17.85], [-92.0, 17.75], [-92.53, 17.97], [-92.68, 18.32], [-92.75, 18.35], [-92.82, 18.32], [-92.97, 17.97], [-93.5, 17.75], [-93.75, 17.85], [-94.0, 17.75], [-94.25, 17.85], [-94.5, 17.75], [-95.03, 17.97]]]]}, "2026-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.03, 17.97], [-95.25, 18.5], [-95.03, 19.03], [-94.5, 19.25], [-94.25, 19.15], [-94.18, 19.18], [-94.15, 19.25], [-94.25, 19.5], [-94.03, 20.03], [-93.68, 20.18], [-93.65, 20.25], [-93.75, 20.5], [-93.53, 21.03], [-93.0, 21.25], [-92.75, 21.15], [-92.68, 21.18], [-92.53, 21.53], [-92.18, 21.68], [-92.03, 22.03], [-91.5, 22.25], [-91.25, 22.15], [-91.0, 22.25], [-90.75, 22.15], [-90.5, 22.25], [-90.25, 22.15], [-90.0, 22.25], [-89.75, 22.15], [-89.5, 22.25], [-89.25, 22.15], [-89.0, 22.25], [-88.47, 22.03], [-88.25, 21.5], [-88.47, 20.97], [-89.0, 20.75], [-89.25, 20.85], [-89.5, 20.75], [-89.75, 20.85], [-89.82, 20.82], [-89.97, 20.47], [-90.32, 20.32], [-90.35, 20.25], [-90.25, 20.0], [-90.35, 19.75], [-90.25, 19.5], [-90.47, 18.97], [-90.82, 18.82], [-90.85, 18.75], [-90.75, 18.5], [-90.97, 17.97], [-91.5, 17.75], [-91.75, 17.85], [-92.0, 17.75], [-92.53, 17.97], [-92.68, 18.32], [-92.75, 18.35], [-92.82, 18.32], [-92.97, 17.97], [-93.5, 17.75], [-93.75, 17.85], [-94.0, 17.75], [-94.25, 17.85], [-94.5, 17.75], [-95.03, 17.97]]]]}, "2026-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-95.03, 17.97], [-95.25, 18.5], [-95.03, 19.03], [-94.5, 19.25], [-94.25, 19.15], [-94.18, 19.18], [-94.15, 19.25], [-94.25, 19.5], [-94.03, 20.03], [-93.68, 20.18], [-93.65, 20.25], [-93.75, 20.5], [-93.53, 21.03], [-93.0, 21.25], [-92.75, 21.15], [-92.68, 21.18], [-92.53, 21.53], [-92.18, 21.68], [-92.03, 22.03], [-91.5, 22.25], [-91.25, 22.15], [-91.0, 22.25], [-90.75, 22.15], [-90.5, 22.25], [-90.25, 22.15], [-90.0, 22.25], [-89.75, 22.15], [-89.5, 22.25], [-89.25, 22.15], [-89.0, 22.25], [-88.47, 22.03], [-88.25, 21.5], [-88.47, 20.97], [-89.0, 20.75], [-89.25, 20.85], [-89.5, 20.75], [-89.75, 20.85], [-89.82, 20.82], [-89.97, 20.47], [-90.32, 20.32], [-90.35, 20.25], [-90.25, 20.0], [-90.35, 19.75], [-90.25, 19.5], [-90.47, 18.97], [-90.82, 18.82], [-90.85, 18.75], [-90.75, 18.5], [-90.97, 17.97], [-91.5, 17.75], [-91.75, 17.85], [-92.0, 17.75], [-92.53, 17.97], [-92.68, 18.32], [-92.75, 18.35], [-92.82, 18.32], [-92.97, 17.97], [-93.5, 17.75], [-93.75, 17.85], [-94.0, 17.75], [-94.25, 17.85], [-94.5, 17.75], [-95.03, 17.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.756427720136401}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.6654806422975366}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.79416286327222, 20.6859636377406, 21.92169455069086]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.7867256164551, 19.769414520263695, 21.28642934163412]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.307373375685052, -3.448877205866806, -2.2401913453407523]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.774253679418109, -4.756427720136401, -3.847082071114812]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7471885815197317, -2.5408136648257322, -1.6239093181311206]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.049850725650014, -2.797179440539913, -2.116118542776464]}}