{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.625190", "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": "2012-Oct-24_to_2012-Oct-27_84.0_57.5"}, "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": 2012100000969}, "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": "October 24 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 27 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 177662.29480878354}, "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": ["E.Siberia", "W.Siberia"]}, "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": []}, "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": 57.5}, "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": 84.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "84.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 80.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 93.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.97, 55.53], [81.5, 55.75], [81.75, 55.65], [82.0, 55.75], [82.53, 55.53], [82.75, 55.0], [82.53, 54.47], [82.18, 54.32], [82.03, 53.97], [81.5, 53.75], [81.25, 53.85], [81.18, 53.82], [81.03, 53.47], [80.5, 53.25], [79.97, 53.47], [79.75, 54.0], [79.97, 54.53], [80.32, 54.68], [80.47, 55.03], [80.82, 55.18], [80.97, 55.53]]], [[[83.32, 57.68], [83.47, 58.03], [84.0, 58.25], [84.25, 58.15], [84.5, 58.25], [84.75, 58.15], [85.0, 58.25], [85.53, 58.03], [85.68, 57.68], [85.75, 57.65], [86.0, 57.75], [86.53, 57.53], [86.75, 57.0], [86.65, 56.75], [86.75, 56.5], [86.53, 55.97], [86.0, 55.75], [85.5, 55.96], [85.0, 55.75], [84.75, 55.85], [84.5, 55.75], [84.25, 55.85], [84.0, 55.75], [83.75, 55.85], [83.5, 55.75], [82.97, 55.97], [82.75, 56.5], [82.85, 56.75], [82.75, 57.0], [82.97, 57.53], [83.32, 57.68]]]]}, "2012-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.82, 55.18], [80.97, 55.53], [81.5, 55.75], [81.75, 55.65], [82.0, 55.75], [82.25, 55.65], [82.5, 55.75], [82.75, 55.65], [83.0, 55.75], [83.25, 55.65], [83.32, 55.68], [83.38, 55.8], [82.97, 55.97], [82.75, 56.5], [82.85, 56.75], [82.75, 57.0], [82.97, 57.53], [83.32, 57.68], [83.47, 58.03], [84.0, 58.25], [84.25, 58.15], [84.5, 58.25], [84.75, 58.15], [85.0, 58.25], [85.53, 58.03], [85.68, 57.68], [85.75, 57.65], [86.0, 57.75], [86.53, 57.53], [86.75, 57.0], [86.65, 56.75], [86.75, 56.5], [86.63, 56.2], [86.75, 56.15], [86.82, 56.18], [86.97, 56.53], [87.5, 56.75], [87.75, 56.65], [88.0, 56.75], [88.25, 56.65], [88.5, 56.75], [88.75, 56.65], [89.0, 56.75], [89.25, 56.65], [89.32, 56.68], [89.47, 57.03], [90.0, 57.25], [90.25, 57.15], [90.32, 57.18], [90.47, 57.53], [91.0, 57.75], [91.25, 57.65], [91.5, 57.75], [91.75, 57.65], [92.0, 57.75], [92.25, 57.65], [92.5, 57.75], [92.75, 57.65], [93.0, 57.75], [93.53, 57.53], [93.75, 57.0], [93.65, 56.75], [93.75, 56.5], [93.53, 55.97], [93.0, 55.75], [92.5, 55.96], [92.18, 55.82], [92.03, 55.47], [91.68, 55.32], [91.53, 54.97], [91.0, 54.75], [90.5, 54.96], [90.18, 54.82], [90.15, 54.75], [90.18, 54.68], [90.53, 54.53], [90.75, 54.0], [90.53, 53.47], [90.18, 53.32], [90.03, 52.97], [89.5, 52.75], [88.97, 52.97], [88.75, 53.5], [88.85, 53.75], [88.75, 54.0], [88.85, 54.25], [88.82, 54.32], [88.75, 54.35], [88.5, 54.25], [88.2, 54.38], [88.03, 53.97], [87.5, 53.75], [87.25, 53.85], [87.0, 53.75], [86.75, 53.85], [86.68, 53.82], [86.53, 53.47], [86.0, 53.25], [85.47, 53.47], [85.32, 53.82], [85.25, 53.85], [85.18, 53.82], [85.03, 53.47], [84.68, 53.32], [84.53, 52.97], [84.18, 52.82], [84.03, 52.47], [83.5, 52.25], [83.25, 52.35], [83.0, 52.25], [82.47, 52.47], [82.32, 52.82], [82.25, 52.85], [82.0, 52.75], [81.75, 52.85], [81.5, 52.75], [80.97, 52.97], [80.8, 53.38], [80.5, 53.25], [79.97, 53.47], [79.75, 54.0], [79.97, 54.53], [80.32, 54.68], [80.47, 55.03], [80.82, 55.18]]]]}, "2012-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.82, 55.18], [80.97, 55.53], [81.5, 55.75], [81.75, 55.65], [82.0, 55.75], [82.25, 55.65], [82.5, 55.75], [82.75, 55.65], [83.0, 55.75], [83.25, 55.65], [83.32, 55.68], [83.38, 55.8], [82.97, 55.97], [82.75, 56.5], [82.85, 56.75], [82.75, 57.0], [82.97, 57.53], [83.32, 57.68], [83.47, 58.03], [84.0, 58.25], [84.25, 58.15], [84.5, 58.25], [84.75, 58.15], [85.0, 58.25], [85.53, 58.03], [85.68, 57.68], [85.75, 57.65], [86.0, 57.75], [86.53, 57.53], [86.75, 57.0], [86.65, 56.75], [86.75, 56.5], [86.63, 56.2], [86.75, 56.15], [86.82, 56.18], [86.97, 56.53], [87.5, 56.75], [87.75, 56.65], [88.0, 56.75], [88.25, 56.65], [88.5, 56.75], [88.75, 56.65], [89.0, 56.75], [89.25, 56.65], [89.32, 56.68], [89.47, 57.03], [90.0, 57.25], [90.25, 57.15], [90.32, 57.18], [90.47, 57.53], [91.0, 57.75], [91.25, 57.65], [91.5, 57.75], [91.75, 57.65], [92.0, 57.75], [92.25, 57.65], [92.5, 57.75], [92.75, 57.65], [93.0, 57.75], [93.53, 57.53], [93.75, 57.0], [93.65, 56.75], [93.75, 56.5], [93.53, 55.97], [93.0, 55.75], [92.5, 55.96], [92.18, 55.82], [92.03, 55.47], [91.68, 55.32], [91.53, 54.97], [91.0, 54.75], [90.5, 54.96], [90.18, 54.82], [90.15, 54.75], [90.18, 54.68], [90.53, 54.53], [90.75, 54.0], [90.53, 53.47], [90.18, 53.32], [90.03, 52.97], [89.5, 52.75], [88.97, 52.97], [88.75, 53.5], [88.85, 53.75], [88.75, 54.0], [88.85, 54.25], [88.82, 54.32], [88.75, 54.35], [88.5, 54.25], [88.2, 54.38], [88.03, 53.97], [87.5, 53.75], [87.25, 53.85], [87.0, 53.75], [86.75, 53.85], [86.68, 53.82], [86.53, 53.47], [86.0, 53.25], [85.47, 53.47], [85.32, 53.82], [85.25, 53.85], [85.18, 53.82], [85.03, 53.47], [84.68, 53.32], [84.53, 52.97], [84.18, 52.82], [84.03, 52.47], [83.5, 52.25], [83.25, 52.35], [83.0, 52.25], [82.47, 52.47], [82.32, 52.82], [82.25, 52.85], [82.0, 52.75], [81.75, 52.85], [81.5, 52.75], [80.97, 52.97], [80.8, 53.38], [80.5, 53.25], [79.97, 53.47], [79.75, 54.0], [79.97, 54.53], [80.32, 54.68], [80.47, 55.03], [80.82, 55.18]]]]}, "2012-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.25, 54.5], [80.47, 55.03], [80.82, 55.18], [80.97, 55.53], [81.5, 55.75], [81.75, 55.65], [82.0, 55.75], [82.25, 55.65], [82.5, 55.75], [82.75, 55.65], [83.0, 55.75], [83.25, 55.65], [83.32, 55.68], [83.38, 55.8], [82.97, 55.97], [82.75, 56.5], [82.85, 56.75], [82.75, 57.0], [82.97, 57.53], [83.32, 57.68], [83.47, 58.03], [84.0, 58.25], [84.25, 58.15], [84.5, 58.25], [85.03, 58.03], [85.18, 57.68], [85.25, 57.65], [85.5, 57.75], [85.75, 57.65], [86.0, 57.75], [86.53, 57.53], [86.75, 57.0], [86.65, 56.75], [86.75, 56.5], [86.63, 56.2], [86.75, 56.15], [86.82, 56.18], [86.97, 56.53], [87.5, 56.75], [87.75, 56.65], [88.0, 56.75], [88.25, 56.65], [88.5, 56.75], [88.75, 56.65], [89.0, 56.75], [89.25, 56.65], [89.32, 56.68], [89.47, 57.03], [90.0, 57.25], [90.25, 57.15], [90.32, 57.18], [90.47, 57.53], [91.0, 57.75], [91.25, 57.65], [91.5, 57.75], [91.75, 57.65], [92.0, 57.75], [92.25, 57.65], [92.5, 57.75], [92.75, 57.65], [93.0, 57.75], [93.53, 57.53], [93.75, 57.0], [93.65, 56.75], [93.75, 56.5], [93.53, 55.97], [93.0, 55.75], [92.5, 55.96], [92.18, 55.82], [92.03, 55.47], [91.68, 55.32], [91.53, 54.97], [91.0, 54.75], [90.5, 54.96], [90.18, 54.82], [90.15, 54.75], [90.18, 54.68], [90.53, 54.53], [90.75, 54.0], [90.53, 53.47], [90.18, 53.32], [90.03, 52.97], [89.5, 52.75], [88.97, 52.97], [88.75, 53.5], [88.85, 53.75], [88.75, 54.0], [88.85, 54.25], [88.82, 54.32], [88.75, 54.35], [88.5, 54.25], [88.2, 54.38], [88.03, 53.97], [87.5, 53.75], [87.25, 53.85], [87.0, 53.75], [86.75, 53.85], [86.68, 53.82], [86.53, 53.47], [86.0, 53.25], [85.47, 53.47], [85.32, 53.82], [85.25, 53.85], [85.18, 53.82], [85.03, 53.47], [84.68, 53.32], [84.53, 52.97], [84.18, 52.82], [84.03, 52.47], [83.5, 52.25], [83.25, 52.35], [83.0, 52.25], [82.47, 52.47], [82.32, 52.82], [82.25, 52.85], [82.0, 52.75], [81.75, 52.85], [81.5, 52.75], [80.97, 52.97], [80.75, 53.5], [80.85, 53.75], [80.82, 53.82], [80.47, 53.97], [80.25, 54.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -12.902944956599754}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -8.227671366815688}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-8.401398245631071, -8.464000353971187, -9.224237777675967, -10.379215838748223]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-11.440524373471135, -12.489789802688222, -14.343487194474733, -14.600730228603084]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.230958132857244, -7.386002253892997, -8.130557193628734, -9.376708370273128]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.63665950055264, -8.63239488372892, -12.395169806563217, -12.902944956599754]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5758551313814448, -1.5813500574779695, -1.7487004839110847, -1.9667851799673943]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.036465298101981, -1.833606557783157, -2.5490332056657357, -2.7056548225729995]}}