{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:30:33.989630", "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": "2022-Apr-08_to_2022-Apr-10_268.5_17.5"}, "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": 2022040000308}, "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": "April 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 10 2022"}, "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": 106097.97254439857}, "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": ["Guatemala", "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": 17.5}, "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": 264.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 269.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.03, 19.03], [-95.5, 19.25], [-94.97, 19.03], [-94.82, 18.68], [-94.75, 18.65], [-94.5, 18.75], [-94.25, 18.65], [-94.0, 18.75], [-93.75, 18.65], [-93.5, 18.75], [-93.25, 18.65], [-93.18, 18.68], [-93.03, 19.03], [-92.5, 19.25], [-92.25, 19.15], [-92.0, 19.25], [-91.75, 19.15], [-91.5, 19.25], [-91.25, 19.15], [-91.0, 19.25], [-90.47, 19.03], [-90.25, 18.5], [-90.35, 18.25], [-90.25, 18.0], [-90.35, 17.75], [-90.32, 17.68], [-89.97, 17.53], [-89.75, 17.0], [-89.97, 16.47], [-90.5, 16.25], [-90.75, 16.35], [-91.0, 16.25], [-91.25, 16.35], [-91.5, 16.25], [-91.75, 16.35], [-91.87, 16.3], [-91.75, 16.0], [-91.97, 15.47], [-92.5, 15.25], [-93.03, 15.47], [-93.18, 15.82], [-93.25, 15.85], [-93.5, 15.75], [-94.03, 15.97], [-94.18, 16.32], [-94.25, 16.35], [-94.5, 16.25], [-95.03, 16.47], [-95.18, 16.82], [-95.25, 16.85], [-95.5, 16.75], [-96.03, 16.97], [-96.25, 17.5], [-96.04, 18.0], [-96.25, 18.5], [-96.03, 19.03]]]]}, "2022-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.03, 19.03], [-95.5, 19.25], [-94.97, 19.03], [-94.82, 18.68], [-94.75, 18.65], [-94.5, 18.75], [-94.25, 18.65], [-94.0, 18.75], [-93.75, 18.65], [-93.5, 18.75], [-93.25, 18.65], [-93.18, 18.68], [-93.03, 19.03], [-92.5, 19.25], [-92.25, 19.15], [-92.0, 19.25], [-91.75, 19.15], [-91.5, 19.25], [-91.25, 19.15], [-91.0, 19.25], [-90.47, 19.03], [-90.25, 18.5], [-90.35, 18.25], [-90.25, 18.0], [-90.35, 17.75], [-90.32, 17.68], [-89.97, 17.53], [-89.75, 17.0], [-89.97, 16.47], [-90.5, 16.25], [-90.75, 16.35], [-91.0, 16.25], [-91.25, 16.35], [-91.5, 16.25], [-91.75, 16.35], [-91.87, 16.3], [-91.75, 16.0], [-91.97, 15.47], [-92.5, 15.25], [-93.03, 15.47], [-93.18, 15.82], [-93.25, 15.85], [-93.5, 15.75], [-94.03, 15.97], [-94.18, 16.32], [-94.25, 16.35], [-94.5, 16.25], [-95.03, 16.47], [-95.18, 16.82], [-95.25, 16.85], [-95.5, 16.75], [-96.03, 16.97], [-96.25, 17.5], [-96.04, 18.0], [-96.25, 18.5], [-96.03, 19.03]]]]}, "2022-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-96.03, 19.03], [-95.5, 19.25], [-94.97, 19.03], [-94.82, 18.68], [-94.75, 18.65], [-94.5, 18.75], [-94.25, 18.65], [-94.0, 18.75], [-93.75, 18.65], [-93.5, 18.75], [-93.25, 18.65], [-93.18, 18.68], [-93.03, 19.03], [-92.5, 19.25], [-92.25, 19.15], [-92.0, 19.25], [-91.75, 19.15], [-91.5, 19.25], [-91.25, 19.15], [-91.0, 19.25], [-90.47, 19.03], [-90.25, 18.5], [-90.35, 18.25], [-90.25, 18.0], [-90.35, 17.75], [-90.32, 17.68], [-89.97, 17.53], [-89.75, 17.0], [-89.97, 16.47], [-90.5, 16.25], [-90.75, 16.35], [-91.0, 16.25], [-91.25, 16.35], [-91.5, 16.25], [-91.75, 16.35], [-91.87, 16.3], [-91.75, 16.0], [-91.97, 15.47], [-92.5, 15.25], [-93.03, 15.47], [-93.18, 15.82], [-93.25, 15.85], [-93.5, 15.75], [-94.03, 15.97], [-94.18, 16.32], [-94.25, 16.35], [-94.5, 16.25], [-95.03, 16.47], [-95.18, 16.82], [-95.25, 16.85], [-95.5, 16.75], [-96.03, 16.97], [-96.25, 17.5], [-96.04, 18.0], [-96.25, 18.5], [-96.03, 19.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.946226210334885}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.377958613496187}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.008959086097434, 21.2583127601888, 23.100653010843303]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.990518240788276, 14.469922586268012, 17.402804694644885]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8136684191345456, -5.5757367175678745, -3.744470703786141]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.101533658848666, -7.946226210334885, -5.32926953301984]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8971175479824791, -2.755809781067283, -1.8382890062924777]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.351110229080026, -3.3150598072766115, -2.256660840553369]}}