{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:24.916045", "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-May-25_to_2012-May-27_84.0_51.5"}, "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": 2012050001315}, "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 25 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 27 2012"}, "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": 77294.0270254724}, "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": ["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": 51.5}, "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": 82.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 89.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 50.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 54.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.85, 51.75], [81.75, 52.0], [81.97, 52.53], [82.5, 52.75], [82.75, 52.65], [83.0, 52.75], [83.5, 52.54], [84.0, 52.75], [84.25, 52.65], [84.32, 52.68], [84.47, 53.03], [85.0, 53.25], [85.25, 53.15], [85.32, 53.18], [85.47, 53.53], [86.0, 53.75], [86.25, 53.65], [86.32, 53.68], [86.47, 54.03], [86.82, 54.18], [86.97, 54.53], [87.5, 54.75], [87.75, 54.65], [88.0, 54.75], [88.53, 54.53], [88.68, 54.18], [89.03, 54.03], [89.18, 53.68], [89.25, 53.65], [89.5, 53.75], [90.03, 53.53], [90.25, 53.0], [90.03, 52.47], [89.5, 52.25], [89.25, 52.35], [89.18, 52.32], [89.03, 51.97], [88.5, 51.75], [88.25, 51.85], [88.18, 51.82], [88.03, 51.47], [87.5, 51.25], [87.25, 51.35], [87.0, 51.25], [86.75, 51.35], [86.68, 51.32], [86.53, 50.97], [86.0, 50.75], [85.75, 50.85], [85.5, 50.75], [85.25, 50.85], [85.0, 50.75], [84.75, 50.85], [84.5, 50.75], [84.25, 50.85], [84.0, 50.75], [83.75, 50.85], [83.5, 50.75], [83.25, 50.85], [83.18, 50.82], [83.03, 50.47], [82.5, 50.25], [81.97, 50.47], [81.75, 51.0], [81.85, 51.25], [81.75, 51.5], [81.85, 51.75]]]]}, "2012-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.85, 51.75], [81.75, 52.0], [81.97, 52.53], [82.5, 52.75], [82.75, 52.65], [83.0, 52.75], [83.5, 52.54], [84.0, 52.75], [84.25, 52.65], [84.32, 52.68], [84.47, 53.03], [85.0, 53.25], [85.25, 53.15], [85.32, 53.18], [85.47, 53.53], [86.0, 53.75], [86.25, 53.65], [86.32, 53.68], [86.47, 54.03], [86.82, 54.18], [86.97, 54.53], [87.5, 54.75], [87.75, 54.65], [88.0, 54.75], [88.53, 54.53], [88.68, 54.18], [89.03, 54.03], [89.18, 53.68], [89.25, 53.65], [89.5, 53.75], [90.03, 53.53], [90.25, 53.0], [90.03, 52.47], [89.5, 52.25], [89.25, 52.35], [89.18, 52.32], [89.03, 51.97], [88.5, 51.75], [88.25, 51.85], [88.18, 51.82], [88.03, 51.47], [87.5, 51.25], [87.25, 51.35], [87.0, 51.25], [86.75, 51.35], [86.68, 51.32], [86.53, 50.97], [86.0, 50.75], [85.75, 50.85], [85.5, 50.75], [85.25, 50.85], [85.0, 50.75], [84.75, 50.85], [84.5, 50.75], [84.25, 50.85], [84.0, 50.75], [83.75, 50.85], [83.5, 50.75], [83.25, 50.85], [83.18, 50.82], [83.03, 50.47], [82.5, 50.25], [81.97, 50.47], [81.75, 51.0], [81.85, 51.25], [81.75, 51.5], [81.85, 51.75]]]]}, "2012-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.85, 51.75], [81.75, 52.0], [81.97, 52.53], [82.5, 52.75], [82.75, 52.65], [83.0, 52.75], [83.5, 52.54], [84.0, 52.75], [84.25, 52.65], [84.32, 52.68], [84.47, 53.03], [85.0, 53.25], [85.25, 53.15], [85.32, 53.18], [85.47, 53.53], [86.0, 53.75], [86.25, 53.65], [86.32, 53.68], [86.47, 54.03], [86.82, 54.18], [86.97, 54.53], [87.5, 54.75], [87.75, 54.65], [88.0, 54.75], [88.53, 54.53], [88.68, 54.18], [89.03, 54.03], [89.18, 53.68], [89.25, 53.65], [89.5, 53.75], [90.03, 53.53], [90.25, 53.0], [90.03, 52.47], [89.5, 52.25], [89.25, 52.35], [89.18, 52.32], [89.03, 51.97], [88.5, 51.75], [88.25, 51.85], [88.18, 51.82], [88.03, 51.47], [87.5, 51.25], [87.25, 51.35], [87.0, 51.25], [86.75, 51.35], [86.68, 51.32], [86.53, 50.97], [86.0, 50.75], [85.75, 50.85], [85.5, 50.75], [85.25, 50.85], [85.0, 50.75], [84.75, 50.85], [84.5, 50.75], [84.25, 50.85], [84.0, 50.75], [83.75, 50.85], [83.5, 50.75], [83.25, 50.85], [83.18, 50.82], [83.03, 50.47], [82.5, 50.25], [81.97, 50.47], [81.75, 51.0], [81.85, 51.25], [81.75, 51.5], [81.85, 51.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.941941106560307}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -7.1342479655441755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.329753986912351, 5.262886183472801, 6.764338821766955]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.870230599707668, 1.8925792719006722, 3.0612425331950135]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.5807765558616085, -8.0503797539693, -6.7715875868016235]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.924259488227904, -8.941941106560307, -7.711504961244259]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5524466230512814, -1.8804497494572538, -1.5538810294867575]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.809882019373735, -2.1161955206334553, -1.7761553401268457]}}