{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:27.447140", "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": "2017-Jul-15_to_2017-Jul-19_81.0_80.0"}, "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": 2017070000645}, "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": "July 15 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 19 2017"}, "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": 69418.59974659243}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Arctic-Ocean", "Russian-Arctic"]}, "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": ["Kara Sea"]}, "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": 80.0}, "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": 81.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "81.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 67.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 92.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 78.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 81.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[77.97, 78.97], [77.75, 79.5], [77.97, 80.03], [78.5, 80.25], [78.75, 80.15], [79.0, 80.25], [79.25, 80.15], [79.5, 80.25], [79.75, 80.15], [79.82, 80.18], [79.97, 80.53], [80.5, 80.75], [80.75, 80.65], [81.0, 80.75], [81.25, 80.65], [81.5, 80.75], [81.75, 80.65], [82.0, 80.75], [82.25, 80.65], [82.5, 80.75], [82.75, 80.65], [83.0, 80.75], [83.25, 80.65], [83.5, 80.75], [83.75, 80.65], [84.0, 80.75], [84.53, 80.53], [84.68, 80.18], [85.03, 80.03], [85.25, 79.5], [85.03, 78.97], [84.5, 78.75], [84.25, 78.85], [84.0, 78.75], [83.75, 78.85], [83.68, 78.82], [83.65, 78.75], [83.75, 78.5], [83.53, 77.97], [83.0, 77.75], [82.75, 77.85], [82.5, 77.75], [82.25, 77.85], [82.0, 77.75], [81.75, 77.85], [81.5, 77.75], [80.97, 77.97], [80.82, 78.32], [80.75, 78.35], [80.5, 78.25], [80.25, 78.35], [80.0, 78.25], [79.75, 78.35], [79.5, 78.25], [78.97, 78.47], [78.82, 78.82], [78.75, 78.85], [78.5, 78.75], [77.97, 78.97]]]]}, "2017-07-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.25, 80.5], [67.47, 81.03], [68.0, 81.25], [68.25, 81.15], [68.5, 81.25], [68.75, 81.15], [69.0, 81.25], [69.25, 81.15], [69.5, 81.25], [69.75, 81.15], [70.0, 81.25], [70.25, 81.15], [70.5, 81.25], [70.75, 81.15], [71.0, 81.25], [71.25, 81.15], [71.5, 81.25], [71.75, 81.15], [72.0, 81.25], [72.25, 81.15], [72.5, 81.25], [72.75, 81.15], [73.0, 81.25], [73.53, 81.03], [73.68, 80.68], [73.75, 80.65], [74.0, 80.75], [74.25, 80.65], [74.5, 80.75], [74.75, 80.65], [75.0, 80.75], [75.25, 80.65], [75.5, 80.75], [75.75, 80.65], [76.0, 80.75], [76.25, 80.65], [76.32, 80.68], [76.47, 81.03], [77.0, 81.25], [77.25, 81.15], [77.5, 81.25], [77.75, 81.15], [78.0, 81.25], [78.25, 81.15], [78.5, 81.25], [78.75, 81.15], [79.0, 81.25], [79.25, 81.15], [79.5, 81.25], [79.75, 81.15], [80.0, 81.25], [80.25, 81.15], [80.5, 81.25], [80.75, 81.15], [81.0, 81.25], [81.25, 81.15], [81.5, 81.25], [81.75, 81.15], [82.0, 81.25], [82.25, 81.15], [82.5, 81.25], [82.75, 81.15], [83.0, 81.25], [83.25, 81.15], [83.5, 81.25], [83.75, 81.15], [84.0, 81.25], [84.25, 81.15], [84.5, 81.25], [84.75, 81.15], [85.0, 81.25], [85.25, 81.15], [85.5, 81.25], [85.75, 81.15], [86.0, 81.25], [86.25, 81.15], [86.5, 81.25], [86.75, 81.15], [87.0, 81.25], [87.25, 81.15], [87.5, 81.25], [87.75, 81.15], [88.0, 81.25], [88.25, 81.15], [88.5, 81.25], [88.75, 81.15], [89.0, 81.25], [89.25, 81.15], [89.5, 81.25], [89.75, 81.15], [90.0, 81.25], [90.53, 81.03], [90.75, 80.5], [90.53, 79.97], [90.0, 79.75], [89.75, 79.85], [89.5, 79.75], [89.25, 79.85], [89.0, 79.75], [88.75, 79.85], [88.5, 79.75], [88.25, 79.85], [88.18, 79.82], [88.03, 79.47], [87.5, 79.25], [87.25, 79.35], [87.18, 79.32], [87.03, 78.97], [86.5, 78.75], [86.25, 78.85], [86.0, 78.75], [85.75, 78.85], [85.5, 78.75], [85.25, 78.85], [85.13, 78.8], [85.25, 78.5], [85.03, 77.97], [84.5, 77.75], [84.25, 77.85], [84.0, 77.75], [83.75, 77.85], [83.5, 77.75], [83.25, 77.85], [83.0, 77.75], [82.75, 77.85], [82.5, 77.75], [82.25, 77.85], [82.0, 77.75], [81.75, 77.85], [81.5, 77.75], [80.97, 77.97], [80.82, 78.32], [80.75, 78.35], [80.5, 78.25], [80.25, 78.35], [80.0, 78.25], [79.75, 78.35], [79.5, 78.25], [78.97, 78.47], [78.82, 78.82], [78.75, 78.85], [78.5, 78.75], [78.25, 78.85], [78.0, 78.75], [77.75, 78.85], [77.5, 78.75], [77.25, 78.85], [77.0, 78.75], [76.75, 78.85], [76.5, 78.75], [76.25, 78.85], [76.0, 78.75], [75.75, 78.85], [75.5, 78.75], [75.25, 78.85], [75.0, 78.75], [74.75, 78.85], [74.5, 78.75], [74.25, 78.85], [74.0, 78.75], [73.75, 78.85], [73.5, 78.75], [73.25, 78.85], [73.0, 78.75], [72.75, 78.85], [72.5, 78.75], [72.25, 78.85], [72.0, 78.75], [71.75, 78.85], [71.5, 78.75], [71.25, 78.85], [71.0, 78.75], [70.47, 78.97], [70.32, 79.32], [70.25, 79.35], [70.0, 79.25], [69.75, 79.35], [69.5, 79.25], [68.97, 79.47], [68.82, 79.82], [68.75, 79.85], [68.5, 79.75], [68.25, 79.85], [68.0, 79.75], [67.47, 79.97], [67.25, 80.5]]], [[[91.47, 80.47], [91.25, 81.0], [91.47, 81.53], [92.0, 81.75], [92.53, 81.53], [92.75, 81.0], [92.53, 80.47], [92.0, 80.25], [91.47, 80.47]]]]}, "2017-07-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.47, 79.97], [67.25, 80.5], [67.47, 81.03], [68.0, 81.25], [68.25, 81.15], [68.5, 81.25], [68.75, 81.15], [69.0, 81.25], [69.25, 81.15], [69.5, 81.25], [69.75, 81.15], [70.0, 81.25], [70.25, 81.15], [70.5, 81.25], [70.75, 81.15], [71.0, 81.25], [71.25, 81.15], [71.5, 81.25], [71.75, 81.15], [72.0, 81.25], [72.25, 81.15], [72.5, 81.25], [72.75, 81.15], [73.0, 81.25], [73.53, 81.03], [73.68, 80.68], [73.75, 80.65], [74.0, 80.75], [74.25, 80.65], [74.5, 80.75], [74.75, 80.65], [75.0, 80.75], [75.25, 80.65], [75.5, 80.75], [75.75, 80.65], [76.0, 80.75], [76.25, 80.65], [76.32, 80.68], [76.47, 81.03], [77.0, 81.25], [77.25, 81.15], [77.5, 81.25], [77.75, 81.15], [78.0, 81.25], [78.25, 81.15], [78.5, 81.25], [78.75, 81.15], [79.0, 81.25], [79.25, 81.15], [79.5, 81.25], [79.75, 81.15], [80.0, 81.25], [80.25, 81.15], [80.5, 81.25], [80.75, 81.15], [81.0, 81.25], [81.25, 81.15], [81.5, 81.25], [81.75, 81.15], [82.0, 81.25], [82.25, 81.15], [82.5, 81.25], [82.75, 81.15], [83.0, 81.25], [83.25, 81.15], [83.5, 81.25], [83.75, 81.15], [84.0, 81.25], [84.25, 81.15], [84.5, 81.25], [84.75, 81.15], [85.0, 81.25], [85.25, 81.15], [85.5, 81.25], [85.75, 81.15], [86.0, 81.25], [86.25, 81.15], [86.5, 81.25], [86.75, 81.15], [87.0, 81.25], [87.25, 81.15], [87.5, 81.25], [87.75, 81.15], [88.0, 81.25], [88.25, 81.15], [88.5, 81.25], [88.75, 81.15], [89.0, 81.25], [89.25, 81.15], [89.5, 81.25], [89.75, 81.15], [89.82, 81.18], [89.97, 81.53], [90.5, 81.75], [90.75, 81.65], [91.0, 81.75], [91.25, 81.65], [91.5, 81.75], [91.75, 81.65], [92.0, 81.75], [92.53, 81.53], [92.75, 81.0], [92.53, 80.47], [92.0, 80.25], [91.75, 80.35], [91.5, 80.25], [91.25, 80.35], [91.0, 80.25], [90.75, 80.35], [90.68, 80.32], [90.53, 79.97], [90.0, 79.75], [89.75, 79.85], [89.5, 79.75], [89.25, 79.85], [89.0, 79.75], [88.75, 79.85], [88.5, 79.75], [88.25, 79.85], [88.18, 79.82], [88.03, 79.47], [87.5, 79.25], [87.25, 79.35], [87.18, 79.32], [87.03, 78.97], [86.5, 78.75], [86.25, 78.85], [86.0, 78.75], [85.75, 78.85], [85.5, 78.75], [85.25, 78.85], [85.13, 78.8], [85.25, 78.5], [85.03, 77.97], [84.5, 77.75], [84.25, 77.85], [84.0, 77.75], [83.75, 77.85], [83.5, 77.75], [83.25, 77.85], [83.0, 77.75], [82.75, 77.85], [82.5, 77.75], [82.25, 77.85], [82.0, 77.75], [81.75, 77.85], [81.5, 77.75], [80.97, 77.97], [80.82, 78.32], [80.75, 78.35], [80.5, 78.25], [80.25, 78.35], [80.0, 78.25], [79.75, 78.35], [79.5, 78.25], [78.97, 78.47], [78.82, 78.82], [78.75, 78.85], [78.5, 78.75], [78.25, 78.85], [78.0, 78.75], [77.75, 78.85], [77.5, 78.75], [77.25, 78.85], [77.0, 78.75], [76.75, 78.85], [76.5, 78.75], [76.25, 78.85], [76.0, 78.75], [75.75, 78.85], [75.5, 78.75], [75.25, 78.85], [75.0, 78.75], [74.75, 78.85], [74.5, 78.75], [74.25, 78.85], [74.0, 78.75], [73.75, 78.85], [73.5, 78.75], [73.25, 78.85], [73.0, 78.75], [72.75, 78.85], [72.5, 78.75], [72.25, 78.85], [72.0, 78.75], [71.75, 78.85], [71.5, 78.75], [71.25, 78.85], [71.0, 78.75], [70.47, 78.97], [70.32, 79.32], [70.25, 79.35], [70.0, 79.25], [69.75, 79.35], [69.5, 79.25], [68.97, 79.47], [68.82, 79.82], [68.75, 79.85], [68.5, 79.75], [68.25, 79.85], [68.0, 79.75], [67.47, 79.97]]]]}, "2017-07-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[67.47, 79.97], [67.25, 80.5], [67.47, 81.03], [68.0, 81.25], [68.25, 81.15], [68.5, 81.25], [68.75, 81.15], [69.0, 81.25], [69.25, 81.15], [69.5, 81.25], [69.75, 81.15], [70.0, 81.25], [70.25, 81.15], [70.5, 81.25], [70.75, 81.15], [71.0, 81.25], [71.25, 81.15], [71.5, 81.25], [71.75, 81.15], [72.0, 81.25], [72.25, 81.15], [72.5, 81.25], [72.75, 81.15], [73.0, 81.25], [73.53, 81.03], [73.68, 80.68], [73.75, 80.65], [74.0, 80.75], [74.25, 80.65], [74.5, 80.75], [74.75, 80.65], [75.0, 80.75], [75.25, 80.65], [75.5, 80.75], [75.75, 80.65], [76.0, 80.75], [76.25, 80.65], [76.32, 80.68], [76.47, 81.03], [77.0, 81.25], [77.25, 81.15], [77.5, 81.25], [77.75, 81.15], [78.0, 81.25], [78.25, 81.15], [78.5, 81.25], [78.75, 81.15], [79.0, 81.25], [79.25, 81.15], [79.5, 81.25], [79.75, 81.15], [80.0, 81.25], [80.25, 81.15], [80.5, 81.25], [80.75, 81.15], [81.0, 81.25], [81.25, 81.15], [81.5, 81.25], [81.75, 81.15], [82.0, 81.25], [82.25, 81.15], [82.5, 81.25], [82.75, 81.15], [83.0, 81.25], [83.25, 81.15], [83.5, 81.25], [83.75, 81.15], [84.0, 81.25], [84.25, 81.15], [84.5, 81.25], [84.75, 81.15], [85.0, 81.25], [85.25, 81.15], [85.5, 81.25], [85.75, 81.15], [86.0, 81.25], [86.25, 81.15], [86.5, 81.25], [86.75, 81.15], [87.0, 81.25], [87.25, 81.15], [87.5, 81.25], [87.75, 81.15], [88.0, 81.25], [88.25, 81.15], [88.5, 81.25], [88.75, 81.15], [89.0, 81.25], [89.25, 81.15], [89.5, 81.25], [89.75, 81.15], [89.82, 81.18], [89.97, 81.53], [90.5, 81.75], [90.75, 81.65], [91.0, 81.75], [91.25, 81.65], [91.5, 81.75], [91.75, 81.65], [92.0, 81.75], [92.53, 81.53], [92.75, 81.0], [92.53, 80.47], [92.0, 80.25], [91.75, 80.35], [91.5, 80.25], [91.25, 80.35], [91.0, 80.25], [90.75, 80.35], [90.68, 80.32], [90.53, 79.97], [90.0, 79.75], [89.75, 79.85], [89.5, 79.75], [89.25, 79.85], [89.0, 79.75], [88.75, 79.85], [88.5, 79.75], [88.25, 79.85], [88.18, 79.82], [88.03, 79.47], [87.5, 79.25], [87.25, 79.35], [87.18, 79.32], [87.03, 78.97], [86.5, 78.75], [86.25, 78.85], [86.0, 78.75], [85.75, 78.85], [85.5, 78.75], [85.25, 78.85], [85.13, 78.8], [85.25, 78.5], [85.03, 77.97], [84.5, 77.75], [84.25, 77.85], [84.0, 77.75], [83.75, 77.85], [83.5, 77.75], [83.25, 77.85], [83.0, 77.75], [82.75, 77.85], [82.5, 77.75], [82.25, 77.85], [82.0, 77.75], [81.75, 77.85], [81.5, 77.75], [80.97, 77.97], [80.82, 78.32], [80.75, 78.35], [80.5, 78.25], [80.25, 78.35], [80.0, 78.25], [79.75, 78.35], [79.5, 78.25], [78.97, 78.47], [78.82, 78.82], [78.75, 78.85], [78.5, 78.75], [78.25, 78.85], [78.0, 78.75], [77.75, 78.85], [77.5, 78.75], [77.25, 78.85], [77.0, 78.75], [76.75, 78.85], [76.5, 78.75], [76.25, 78.85], [76.0, 78.75], [75.75, 78.85], [75.5, 78.75], [75.25, 78.85], [75.0, 78.75], [74.75, 78.85], [74.5, 78.75], [74.25, 78.85], [74.0, 78.75], [73.75, 78.85], [73.5, 78.75], [73.25, 78.85], [73.0, 78.75], [72.75, 78.85], [72.5, 78.75], [72.25, 78.85], [72.0, 78.75], [71.75, 78.85], [71.5, 78.75], [71.25, 78.85], [71.0, 78.75], [70.47, 78.97], [70.32, 79.32], [70.25, 79.35], [70.0, 79.25], [69.75, 79.35], [69.5, 79.25], [68.97, 79.47], [68.82, 79.82], [68.75, 79.85], [68.5, 79.75], [68.25, 79.85], [68.0, 79.75], [67.47, 79.97]]]]}, "2017-07-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[89.97, 80.47], [89.75, 81.0], [89.97, 81.53], [90.5, 81.75], [90.75, 81.65], [91.0, 81.75], [91.25, 81.65], [91.5, 81.75], [91.75, 81.65], [92.0, 81.75], [92.53, 81.53], [92.75, 81.0], [92.53, 80.47], [92.0, 80.25], [91.75, 80.35], [91.5, 80.25], [91.25, 80.35], [91.0, 80.25], [90.75, 80.35], [90.5, 80.25], [89.97, 80.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.0097983672860096}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2213031781046915}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.2179384808470104, -0.7359783685077446, -0.43450655250268255, -0.42305076388151974, -0.12461478837110462]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.42427098869904967, -1.0999115071844585, -0.906462833897308, -0.8674366667644904, -0.18330122827813966]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0305586319021158, -1.4469899614153852, -1.1381068639380105, -1.148951696223186, -0.719763179358722]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3515531782192056, -2.0097983672860096, -1.5260900340107355, -1.5104510983565547, -0.7721568802928118]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3361452440443895, -2.0090820244801137, -1.6287390123581489, -1.5820012615601557, -1.2221437199527065]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5052767570152796, -2.6505349191017404, -2.4341233033697702, -2.323885208262929, -1.3297713281372825]}}