{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:21:02.354060", "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-Dec-24_to_2019-Dec-28_271.0_19.0"}, "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": 2019120000615}, "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": "December 24 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 28 2019"}, "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": 87699.70595780684}, "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": ["Belize", "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": 19.0}, "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": 271.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "271.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 268.25}, "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": 17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 20.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 18.5], [-92.03, 19.03], [-91.68, 19.18], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.68, 20.18], [-90.65, 20.25], [-90.75, 20.5], [-90.53, 21.03], [-90.0, 21.25], [-89.47, 21.03], [-89.32, 20.68], [-89.25, 20.65], [-89.0, 20.75], [-88.75, 20.65], [-88.5, 20.75], [-87.97, 20.53], [-87.75, 20.0], [-87.85, 19.75], [-87.82, 19.68], [-87.47, 19.53], [-87.25, 19.0], [-87.47, 18.47], [-87.82, 18.32], [-87.85, 18.25], [-87.75, 18.0], [-87.97, 17.47], [-88.5, 17.25], [-88.75, 17.35], [-89.0, 17.25], [-89.25, 17.35], [-89.5, 17.25], [-89.75, 17.35], [-90.0, 17.25], [-90.25, 17.35], [-90.5, 17.25], [-90.75, 17.35], [-91.0, 17.25], [-91.53, 17.47], [-91.68, 17.82], [-92.03, 17.97], [-92.25, 18.5]]]]}, "2019-12-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 18.5], [-92.03, 19.03], [-91.68, 19.18], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.68, 20.18], [-90.65, 20.25], [-90.75, 20.5], [-90.53, 21.03], [-90.0, 21.25], [-89.47, 21.03], [-89.32, 20.68], [-89.25, 20.65], [-89.0, 20.75], [-88.75, 20.65], [-88.5, 20.75], [-87.97, 20.53], [-87.75, 20.0], [-87.85, 19.75], [-87.82, 19.68], [-87.47, 19.53], [-87.25, 19.0], [-87.47, 18.47], [-87.82, 18.32], [-87.85, 18.25], [-87.75, 18.0], [-87.97, 17.47], [-88.5, 17.25], [-88.75, 17.35], [-89.0, 17.25], [-89.25, 17.35], [-89.5, 17.25], [-89.75, 17.35], [-90.0, 17.25], [-90.25, 17.35], [-90.5, 17.25], [-90.75, 17.35], [-91.0, 17.25], [-91.53, 17.47], [-91.68, 17.82], [-92.03, 17.97], [-92.25, 18.5]]]]}, "2019-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.25, 18.5], [-92.03, 19.03], [-91.68, 19.18], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.68, 20.18], [-90.65, 20.25], [-90.75, 20.5], [-90.53, 21.03], [-90.0, 21.25], [-89.47, 21.03], [-89.32, 20.68], [-89.25, 20.65], [-89.0, 20.75], [-88.75, 20.65], [-88.5, 20.75], [-87.97, 20.53], [-87.75, 20.0], [-87.85, 19.75], [-87.82, 19.68], [-87.47, 19.53], [-87.25, 19.0], [-87.47, 18.47], [-87.82, 18.32], [-87.85, 18.25], [-87.75, 18.0], [-87.97, 17.47], [-88.5, 17.25], [-88.75, 17.35], [-89.0, 17.25], [-89.25, 17.35], [-89.5, 17.25], [-89.75, 17.35], [-90.0, 17.25], [-90.25, 17.35], [-90.5, 17.25], [-90.75, 17.35], [-91.0, 17.25], [-91.53, 17.47], [-91.68, 17.82], [-92.03, 17.97], [-92.25, 18.5]]]]}, "2019-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-90.5, 20.25], [-90.25, 20.15], [-90.0, 20.25], [-89.5, 20.04], [-89.0, 20.25], [-88.75, 20.15], [-88.5, 20.25], [-87.97, 20.03], [-87.75, 19.5], [-87.85, 19.25], [-87.75, 19.0], [-87.96, 18.5], [-87.75, 18.0], [-87.97, 17.47], [-88.5, 17.25], [-89.03, 17.47], [-89.18, 17.82], [-89.25, 17.85], [-89.5, 17.75], [-90.03, 17.97], [-90.18, 18.32], [-90.25, 18.35], [-90.5, 18.25], [-90.75, 18.35], [-91.0, 18.25], [-91.53, 18.47], [-91.75, 19.0], [-91.53, 19.53], [-91.18, 19.68], [-91.03, 20.03], [-90.5, 20.25]]]]}, "2019-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-89.53, 20.03], [-89.0, 20.25], [-88.47, 20.03], [-88.25, 19.5], [-88.35, 19.25], [-88.25, 19.0], [-88.47, 18.47], [-89.0, 18.25], [-89.53, 18.47], [-89.75, 19.0], [-89.65, 19.25], [-89.75, 19.5], [-89.53, 20.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.287986707657694}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.904846372633915}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.109533693172693, 18.9652266460497, 19.860091544920124, 20.53034112701863, 20.803900217000432]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.804267317740994, 17.563200146337408, 18.306439979491245, 19.544270216237976, 20.74576751295848]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.605632679666866, -4.711998474787163, -3.8090257082560623, -3.143416561875348, -2.6723739704394234]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.418809396941356, -6.287986707657694, -5.43059498168077, -3.9400507057436016, -2.691644522760953]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8110863700473037, -2.3499505484098075, -1.9353189277637477, -1.5671191371443844, -1.3614009095445123]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1962027408692792, -2.863086224149125, -2.4277794120232254, -2.0488251662227412, -1.3912883085265568]}}