{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:04.172719", "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": "2014-Aug-13_to_2014-Aug-15_268.5_32.5"}, "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": 2014080000666}, "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": "August 13 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 15 2014"}, "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": 95404.22533396263}, "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", "E.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": 32.5}, "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": 266.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 272.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.5, 33.75], [-92.25, 33.65], [-92.18, 33.68], [-92.03, 34.03], [-91.5, 34.25], [-91.25, 34.15], [-91.0, 34.25], [-90.75, 34.15], [-90.62, 34.2], [-90.75, 34.5], [-90.53, 35.03], [-90.18, 35.18], [-90.15, 35.25], [-90.25, 35.5], [-90.03, 36.03], [-89.5, 36.25], [-88.97, 36.03], [-88.82, 35.68], [-88.75, 35.65], [-88.5, 35.75], [-87.97, 35.53], [-87.8, 35.12], [-87.5, 35.25], [-86.97, 35.03], [-86.75, 34.5], [-86.97, 33.97], [-87.32, 33.82], [-87.47, 33.47], [-87.82, 33.32], [-87.85, 33.25], [-87.75, 33.0], [-87.97, 32.47], [-88.5, 32.25], [-88.75, 32.35], [-89.0, 32.25], [-89.25, 32.35], [-89.32, 32.32], [-89.47, 31.97], [-90.0, 31.75], [-90.25, 31.85], [-90.5, 31.75], [-90.75, 31.85], [-90.82, 31.82], [-90.97, 31.47], [-91.5, 31.25], [-91.75, 31.35], [-92.0, 31.25], [-92.53, 31.47], [-92.68, 31.82], [-92.75, 31.85], [-93.0, 31.75], [-93.53, 31.97], [-93.75, 32.5], [-93.53, 33.03], [-93.18, 33.18], [-93.03, 33.53], [-92.5, 33.75]]]]}, "2014-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.5, 33.75], [-92.25, 33.65], [-92.18, 33.68], [-92.03, 34.03], [-91.5, 34.25], [-91.25, 34.15], [-91.0, 34.25], [-90.75, 34.15], [-90.62, 34.2], [-90.75, 34.5], [-90.53, 35.03], [-90.18, 35.18], [-90.15, 35.25], [-90.25, 35.5], [-90.03, 36.03], [-89.5, 36.25], [-88.97, 36.03], [-88.82, 35.68], [-88.75, 35.65], [-88.5, 35.75], [-87.97, 35.53], [-87.8, 35.12], [-87.5, 35.25], [-86.97, 35.03], [-86.75, 34.5], [-86.97, 33.97], [-87.32, 33.82], [-87.47, 33.47], [-87.82, 33.32], [-87.85, 33.25], [-87.75, 33.0], [-87.97, 32.47], [-88.5, 32.25], [-88.75, 32.35], [-89.0, 32.25], [-89.25, 32.35], [-89.32, 32.32], [-89.47, 31.97], [-90.0, 31.75], [-90.25, 31.85], [-90.5, 31.75], [-90.75, 31.85], [-90.82, 31.82], [-90.97, 31.47], [-91.5, 31.25], [-91.75, 31.35], [-92.0, 31.25], [-92.53, 31.47], [-92.68, 31.82], [-92.75, 31.85], [-93.0, 31.75], [-93.53, 31.97], [-93.75, 32.5], [-93.53, 33.03], [-93.18, 33.18], [-93.03, 33.53], [-92.5, 33.75]]]]}, "2014-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-92.5, 33.75], [-92.25, 33.65], [-92.18, 33.68], [-92.03, 34.03], [-91.5, 34.25], [-91.25, 34.15], [-91.0, 34.25], [-90.75, 34.15], [-90.62, 34.2], [-90.75, 34.5], [-90.53, 35.03], [-90.18, 35.18], [-90.15, 35.25], [-90.25, 35.5], [-90.03, 36.03], [-89.5, 36.25], [-88.97, 36.03], [-88.82, 35.68], [-88.75, 35.65], [-88.5, 35.75], [-87.97, 35.53], [-87.8, 35.12], [-87.5, 35.25], [-86.97, 35.03], [-86.75, 34.5], [-86.97, 33.97], [-87.32, 33.82], [-87.47, 33.47], [-87.82, 33.32], [-87.85, 33.25], [-87.75, 33.0], [-87.97, 32.47], [-88.5, 32.25], [-88.75, 32.35], [-89.0, 32.25], [-89.25, 32.35], [-89.32, 32.32], [-89.47, 31.97], [-90.0, 31.75], [-90.25, 31.85], [-90.5, 31.75], [-90.75, 31.85], [-90.82, 31.82], [-90.97, 31.47], [-91.5, 31.25], [-91.75, 31.35], [-92.0, 31.25], [-92.53, 31.47], [-92.68, 31.82], [-92.75, 31.85], [-93.0, 31.75], [-93.53, 31.97], [-93.75, 32.5], [-93.53, 33.03], [-93.18, 33.18], [-93.03, 33.53], [-92.5, 33.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.286436558518062}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.8733360804668466}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.67843899510808, 22.697562127500532, 23.45922875220083]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.362937838545292, 21.545803542049327, 22.72967749053663]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.534101223917303, -4.453142561744745, -3.632764455738492]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.386325221521304, -5.286436558518062, -4.969917274105285]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5496618039216916, -1.8776649898846396, -1.4871954260361584]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8885087988889817, -2.173157059650361, -1.9446000934561585]}}