{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:56.545147", "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": "2019-Jan-28_to_2019-Jan-30_270.5_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": 2019010000911}, "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": "January 28 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 30 2019"}, "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": 55110.37224696239}, "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": 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": 270.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "270.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 268.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.75}, "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": {"2019-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.65, 19.75], [-91.75, 20.0], [-91.53, 20.53], [-91.18, 20.68], [-91.03, 21.03], [-90.68, 21.18], [-90.53, 21.53], [-90.0, 21.75], [-89.75, 21.65], [-89.5, 21.75], [-89.25, 21.65], [-89.0, 21.75], [-88.75, 21.65], [-88.68, 21.68], [-88.53, 22.03], [-88.0, 22.25], [-87.47, 22.03], [-87.25, 21.5], [-87.47, 20.97], [-87.82, 20.82], [-87.97, 20.47], [-88.32, 20.32], [-88.35, 20.25], [-88.25, 20.0], [-88.47, 19.47], [-89.0, 19.25], [-89.25, 19.35], [-89.32, 19.32], [-89.47, 18.97], [-89.82, 18.82], [-89.97, 18.47], [-90.5, 18.25], [-90.75, 18.35], [-91.0, 18.25], [-91.53, 18.47], [-91.75, 19.0], [-91.65, 19.25], [-91.75, 19.5], [-91.65, 19.75]]]]}, "2019-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.65, 19.75], [-91.75, 20.0], [-91.53, 20.53], [-91.18, 20.68], [-91.03, 21.03], [-90.68, 21.18], [-90.53, 21.53], [-90.0, 21.75], [-89.75, 21.65], [-89.5, 21.75], [-89.25, 21.65], [-89.0, 21.75], [-88.75, 21.65], [-88.68, 21.68], [-88.53, 22.03], [-88.0, 22.25], [-87.47, 22.03], [-87.25, 21.5], [-87.47, 20.97], [-87.82, 20.82], [-87.97, 20.47], [-88.32, 20.32], [-88.35, 20.25], [-88.25, 20.0], [-88.47, 19.47], [-89.0, 19.25], [-89.25, 19.35], [-89.32, 19.32], [-89.47, 18.97], [-89.82, 18.82], [-89.97, 18.47], [-90.5, 18.25], [-90.75, 18.35], [-91.0, 18.25], [-91.53, 18.47], [-91.75, 19.0], [-91.65, 19.25], [-91.75, 19.5], [-91.65, 19.75]]]]}, "2019-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.65, 19.75], [-91.75, 20.0], [-91.53, 20.53], [-91.18, 20.68], [-91.03, 21.03], [-90.68, 21.18], [-90.53, 21.53], [-90.0, 21.75], [-89.75, 21.65], [-89.5, 21.75], [-89.25, 21.65], [-89.0, 21.75], [-88.75, 21.65], [-88.68, 21.68], [-88.53, 22.03], [-88.0, 22.25], [-87.47, 22.03], [-87.25, 21.5], [-87.47, 20.97], [-87.82, 20.82], [-87.97, 20.47], [-88.32, 20.32], [-88.35, 20.25], [-88.25, 20.0], [-88.47, 19.47], [-89.0, 19.25], [-89.25, 19.35], [-89.32, 19.32], [-89.47, 18.97], [-89.82, 18.82], [-89.97, 18.47], [-90.5, 18.25], [-90.75, 18.35], [-91.0, 18.25], [-91.53, 18.47], [-91.75, 19.0], [-91.65, 19.25], [-91.75, 19.5], [-91.65, 19.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.158812542446697}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.081239274835175}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.36460597555981, 19.78623345198713, 20.777754988558456]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.35670787290161, 18.503358299404, 19.640915112920368]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.1825544416660225, -3.924078945967267, -3.1370844368722355]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.158812542446697, -5.237926075381949, -4.423868113304195]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.595533399986657, -2.039401064534053, -1.6618898114799072]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.1823279672090687, -2.345113056495166, -1.935279713900011]}}