{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:16.698416", "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": "2013-Dec-15_to_2013-Dec-21_85.0_14.5"}, "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": 2013120000608}, "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 15 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 21 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 257347.92489801065}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Bay-of-Bengal", "S.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": ["Bay of Bengal"]}, "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": 14.5}, "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": 85.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "85.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 78.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 86.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.5, 17.75], [83.03, 17.53], [83.25, 17.0], [83.03, 16.47], [82.5, 16.25], [81.97, 16.47], [81.75, 17.0], [81.97, 17.53], [82.5, 17.75]]]]}, "2013-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.0, 15.75], [85.53, 15.53], [85.75, 15.0], [85.65, 14.75], [85.75, 14.5], [85.53, 13.97], [85.0, 13.75], [84.47, 13.97], [84.25, 14.5], [84.35, 14.75], [84.25, 15.0], [84.47, 15.53], [85.0, 15.75]]], [[[81.97, 16.47], [81.75, 17.0], [81.97, 17.53], [82.5, 17.75], [83.03, 17.53], [83.25, 17.0], [83.03, 16.47], [82.5, 16.25], [81.97, 16.47]]]]}, "2013-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.97, 16.53], [79.32, 16.68], [79.47, 17.03], [80.0, 17.25], [80.53, 17.03], [80.75, 16.5], [80.57, 16.07], [80.82, 16.18], [80.97, 16.53], [81.5, 16.75], [81.75, 16.65], [81.82, 16.68], [81.85, 16.75], [81.75, 17.0], [81.97, 17.53], [82.5, 17.75], [83.03, 17.53], [83.18, 17.18], [83.53, 17.03], [83.68, 16.68], [83.75, 16.65], [83.82, 16.68], [83.97, 17.03], [84.5, 17.25], [84.75, 17.15], [85.0, 17.25], [85.53, 17.03], [85.75, 16.5], [85.65, 16.25], [85.75, 16.0], [85.65, 15.75], [85.68, 15.68], [86.03, 15.53], [86.25, 15.0], [86.03, 14.47], [85.68, 14.32], [85.65, 14.25], [85.75, 14.0], [85.65, 13.75], [85.75, 13.5], [85.53, 12.97], [85.0, 12.75], [84.75, 12.85], [84.5, 12.75], [83.97, 12.97], [83.75, 13.5], [83.85, 13.75], [83.82, 13.82], [83.75, 13.85], [83.5, 13.75], [82.97, 13.97], [82.82, 14.32], [82.47, 14.47], [82.32, 14.82], [82.25, 14.85], [82.0, 14.75], [81.75, 14.85], [81.5, 14.75], [81.25, 14.85], [81.0, 14.75], [80.47, 14.97], [80.25, 15.5], [80.03, 14.97], [79.5, 14.75], [78.97, 14.97], [78.75, 15.5], [78.85, 15.75], [78.75, 16.0], [78.97, 16.53]], [[80.43, 15.93], [80.18, 15.82], [80.15, 15.75], [80.25, 15.5], [80.43, 15.93]]]]}, "2013-12-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.97, 11.97], [78.75, 12.5], [78.97, 13.03], [79.5, 13.25], [80.03, 13.03], [80.25, 12.5], [80.03, 11.97], [79.5, 11.75], [78.97, 11.97]]], [[[79.32, 16.68], [79.47, 17.03], [80.0, 17.25], [80.53, 17.03], [80.75, 16.5], [80.63, 16.2], [80.75, 16.15], [80.82, 16.18], [80.97, 16.53], [81.5, 16.75], [81.75, 16.65], [81.82, 16.68], [81.85, 16.75], [81.75, 17.0], [81.97, 17.53], [82.5, 17.75], [83.03, 17.53], [83.18, 17.18], [83.53, 17.03], [83.68, 16.68], [83.75, 16.65], [83.82, 16.68], [83.97, 17.03], [84.5, 17.25], [84.75, 17.15], [85.0, 17.25], [85.53, 17.03], [85.75, 16.5], [85.65, 16.25], [85.75, 16.0], [85.65, 15.75], [85.68, 15.68], [86.03, 15.53], [86.25, 15.0], [86.13, 14.7], [86.53, 14.53], [86.75, 14.0], [86.53, 13.47], [86.0, 13.25], [85.75, 13.35], [85.68, 13.32], [85.53, 12.97], [85.0, 12.75], [84.75, 12.85], [84.68, 12.82], [84.53, 12.47], [84.0, 12.25], [83.75, 12.35], [83.68, 12.32], [83.53, 11.97], [83.0, 11.75], [82.47, 11.97], [82.32, 12.32], [82.25, 12.35], [82.0, 12.25], [81.75, 12.35], [81.5, 12.25], [81.25, 12.35], [81.0, 12.25], [80.47, 12.47], [80.25, 13.0], [80.35, 13.25], [80.25, 13.5], [80.35, 13.75], [80.32, 13.82], [79.97, 13.97], [79.82, 14.32], [79.47, 14.47], [79.32, 14.82], [78.97, 14.97], [78.75, 15.5], [78.85, 15.75], [78.75, 16.0], [78.97, 16.53], [79.32, 16.68]]]]}, "2013-12-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.32, 13.68], [79.47, 14.03], [79.88, 14.2], [79.82, 14.32], [79.47, 14.47], [79.32, 14.82], [78.97, 14.97], [78.75, 15.5], [78.85, 15.75], [78.75, 16.0], [78.97, 16.53], [79.32, 16.68], [79.47, 17.03], [80.0, 17.25], [80.53, 17.03], [80.75, 16.5], [80.63, 16.2], [80.75, 16.15], [80.82, 16.18], [80.97, 16.53], [81.5, 16.75], [81.75, 16.65], [81.82, 16.68], [81.85, 16.75], [81.75, 17.0], [81.97, 17.53], [82.5, 17.75], [83.03, 17.53], [83.18, 17.18], [83.53, 17.03], [83.68, 16.68], [83.75, 16.65], [83.82, 16.68], [83.97, 17.03], [84.5, 17.25], [84.75, 17.15], [85.0, 17.25], [85.53, 17.03], [85.75, 16.5], [85.65, 16.25], [85.75, 16.0], [85.65, 15.75], [85.68, 15.68], [86.03, 15.53], [86.25, 15.0], [86.13, 14.7], [86.53, 14.53], [86.75, 14.0], [86.53, 13.47], [86.0, 13.25], [85.75, 13.35], [85.68, 13.32], [85.53, 12.97], [85.0, 12.75], [84.75, 12.85], [84.68, 12.82], [84.53, 12.47], [84.0, 12.25], [83.75, 12.35], [83.68, 12.32], [83.53, 11.97], [83.0, 11.75], [82.47, 11.97], [82.32, 12.32], [82.25, 12.35], [82.0, 12.25], [81.75, 12.35], [81.5, 12.25], [81.25, 12.35], [81.18, 12.32], [81.15, 12.25], [81.25, 12.0], [81.03, 11.47], [80.5, 11.25], [80.25, 11.35], [80.0, 11.25], [79.47, 11.47], [79.32, 11.82], [79.25, 11.85], [79.0, 11.75], [78.47, 11.97], [78.25, 12.5], [78.47, 13.03], [78.82, 13.18], [78.97, 13.53], [79.32, 13.68]]]]}, "2013-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.32, 13.68], [79.47, 14.03], [79.88, 14.2], [79.82, 14.32], [79.47, 14.47], [79.25, 15.0], [79.35, 15.25], [79.25, 15.5], [79.46, 16.0], [79.25, 16.5], [79.47, 17.03], [80.0, 17.25], [80.53, 17.03], [80.75, 16.5], [80.63, 16.2], [80.75, 16.15], [81.0, 16.25], [81.53, 16.03], [81.68, 15.68], [81.75, 15.65], [81.82, 15.68], [81.97, 16.03], [82.32, 16.18], [82.38, 16.3], [81.97, 16.47], [81.75, 17.0], [81.97, 17.53], [82.5, 17.75], [83.03, 17.53], [83.25, 17.0], [83.13, 16.7], [83.25, 16.65], [83.5, 16.75], [83.75, 16.65], [84.0, 16.75], [84.53, 16.53], [84.68, 16.18], [85.03, 16.03], [85.25, 15.5], [85.15, 15.25], [85.18, 15.18], [85.53, 15.03], [85.68, 14.68], [85.75, 14.65], [86.0, 14.75], [86.53, 14.53], [86.75, 14.0], [86.53, 13.47], [86.0, 13.25], [85.75, 13.35], [85.68, 13.32], [85.53, 12.97], [85.0, 12.75], [84.75, 12.85], [84.68, 12.82], [84.53, 12.47], [84.0, 12.25], [83.75, 12.35], [83.68, 12.32], [83.53, 11.97], [83.0, 11.75], [82.47, 11.97], [82.32, 12.32], [82.25, 12.35], [82.0, 12.25], [81.75, 12.35], [81.5, 12.25], [81.25, 12.35], [81.18, 12.32], [81.15, 12.25], [81.25, 12.0], [81.03, 11.47], [80.5, 11.25], [80.25, 11.35], [80.0, 11.25], [79.47, 11.47], [79.32, 11.82], [79.25, 11.85], [79.0, 11.75], [78.47, 11.97], [78.25, 12.5], [78.47, 13.03], [78.82, 13.18], [78.97, 13.53], [79.32, 13.68]]]]}, "2013-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[79.32, 13.68], [79.47, 14.03], [80.0, 14.25], [80.53, 14.03], [80.68, 13.68], [80.75, 13.65], [81.0, 13.75], [81.53, 13.53], [81.75, 13.0], [81.53, 12.47], [81.18, 12.32], [81.15, 12.25], [81.25, 12.0], [81.03, 11.47], [80.5, 11.25], [80.25, 11.35], [80.0, 11.25], [79.47, 11.47], [79.32, 11.82], [79.25, 11.85], [79.0, 11.75], [78.47, 11.97], [78.25, 12.5], [78.47, 13.03], [78.82, 13.18], [78.97, 13.53], [79.32, 13.68]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1604107572279645}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1721396216592237}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.125591494397383, 24.867090743170706, 24.48230870821584, 24.348814806007397, 24.141695647989707, 24.351777254310093, 23.460510181593406]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.125591494397383, 24.07777857384218, 21.587495336803784, 21.464631011858728, 20.464376949904647, 20.555862023876443, 20.528623540041792]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7029603025625306, -0.6927178772456463, -0.9748390015928468, -1.2151325024505302, -1.2948231119898834, -1.0933946292705883, -1.2752787657579099]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7029603025625306, -0.7026295666884721, -2.040862515922356, -2.1319890650823368, -2.1604107572279645, -1.9958715662419309, -1.8492741749849984]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3436384015078016, -1.286499733314235, -1.6145552398465022, -2.103246023267845, -2.152615115057167, -1.853462612432718, -1.612397211290393]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3436384015078016, -1.2958393652403157, -2.092985799405067, -2.8953152560669966, -3.207717795610978, -2.7137430796710555, -1.8300458425686088]}}