{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:40.364657", "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": "2010-May-13_to_2010-May-15_257.5_37.0"}, "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": 2010050000432}, "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": "May 13 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 15 2010"}, "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": 89794.39212415754}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-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": []}, "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": 37.0}, "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": 257.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 254.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 259.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 35.75], [-105.75, 36.0], [-105.65, 36.25], [-105.75, 36.5], [-105.53, 37.03], [-105.0, 37.25], [-104.75, 37.15], [-104.5, 37.25], [-104.25, 37.15], [-104.18, 37.18], [-104.03, 37.53], [-103.68, 37.68], [-103.53, 38.03], [-103.0, 38.25], [-102.75, 38.15], [-102.5, 38.25], [-102.25, 38.15], [-102.0, 38.25], [-101.75, 38.15], [-101.5, 38.25], [-100.97, 38.03], [-100.82, 37.68], [-100.47, 37.53], [-100.25, 37.0], [-100.47, 36.47], [-100.82, 36.32], [-100.85, 36.25], [-100.75, 36.0], [-100.97, 35.47], [-101.5, 35.25], [-101.75, 35.35], [-102.0, 35.25], [-102.25, 35.35], [-102.5, 35.25], [-102.75, 35.35], [-102.82, 35.32], [-102.85, 35.25], [-102.75, 35.0], [-102.97, 34.47], [-103.32, 34.32], [-103.47, 33.97], [-104.0, 33.75], [-104.25, 33.85], [-104.5, 33.75], [-105.03, 33.97], [-105.18, 34.32], [-105.53, 34.47], [-105.75, 35.0], [-105.65, 35.25], [-105.75, 35.5], [-105.65, 35.75]]]]}, "2010-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 35.75], [-105.75, 36.0], [-105.65, 36.25], [-105.75, 36.5], [-105.53, 37.03], [-105.0, 37.25], [-104.75, 37.15], [-104.5, 37.25], [-104.25, 37.15], [-104.18, 37.18], [-104.03, 37.53], [-103.68, 37.68], [-103.53, 38.03], [-103.0, 38.25], [-102.75, 38.15], [-102.5, 38.25], [-102.25, 38.15], [-102.0, 38.25], [-101.75, 38.15], [-101.5, 38.25], [-100.97, 38.03], [-100.82, 37.68], [-100.47, 37.53], [-100.25, 37.0], [-100.47, 36.47], [-100.82, 36.32], [-100.85, 36.25], [-100.75, 36.0], [-100.97, 35.47], [-101.5, 35.25], [-101.75, 35.35], [-102.0, 35.25], [-102.25, 35.35], [-102.5, 35.25], [-102.75, 35.35], [-102.82, 35.32], [-102.85, 35.25], [-102.75, 35.0], [-102.97, 34.47], [-103.32, 34.32], [-103.47, 33.97], [-104.0, 33.75], [-104.25, 33.85], [-104.5, 33.75], [-105.03, 33.97], [-105.18, 34.32], [-105.53, 34.47], [-105.75, 35.0], [-105.65, 35.25], [-105.75, 35.5], [-105.65, 35.75]]]]}, "2010-05-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.65, 35.75], [-105.75, 36.0], [-105.65, 36.25], [-105.75, 36.5], [-105.53, 37.03], [-105.0, 37.25], [-104.75, 37.15], [-104.5, 37.25], [-104.25, 37.15], [-104.18, 37.18], [-104.03, 37.53], [-103.68, 37.68], [-103.53, 38.03], [-103.0, 38.25], [-102.75, 38.15], [-102.5, 38.25], [-102.25, 38.15], [-102.0, 38.25], [-101.75, 38.15], [-101.5, 38.25], [-100.97, 38.03], [-100.82, 37.68], [-100.47, 37.53], [-100.25, 37.0], [-100.47, 36.47], [-100.82, 36.32], [-100.85, 36.25], [-100.75, 36.0], [-100.97, 35.47], [-101.5, 35.25], [-101.75, 35.35], [-102.0, 35.25], [-102.25, 35.35], [-102.5, 35.25], [-102.75, 35.35], [-102.82, 35.32], [-102.85, 35.25], [-102.75, 35.0], [-102.97, 34.47], [-103.32, 34.32], [-103.47, 33.97], [-104.0, 33.75], [-104.25, 33.85], [-104.5, 33.75], [-105.03, 33.97], [-105.18, 34.32], [-105.53, 34.47], [-105.75, 35.0], [-105.65, 35.25], [-105.75, 35.5], [-105.65, 35.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.688517584444924}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.109050353469816}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.424293802966417, 11.185762324541201, 11.680470976096728]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [5.941780135650788, 5.088055185291637, 6.0033195101482875]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.447155267223132, -6.023332373434526, -5.856663419751795]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-8.688517584444924, -6.968814660135649, -6.910314698690854]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6378245665983875, -1.5868662376202036, -1.5557060816151287]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9666673010927658, -1.837913665089909, -1.8341722892856396]}}