{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.533317", "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-23_to_2012-Oct-25_85.0_60.5"}, "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": 2012100000929}, "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 23 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 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": 52054.4187445398}, "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": 60.5}, "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": 81.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 87.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.47, 62.03], [82.0, 62.25], [82.53, 62.03], [82.68, 61.68], 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"coordinates": [[[[81.47, 62.03], [82.0, 62.25], [82.53, 62.03], [82.68, 61.68], [82.75, 61.65], [83.0, 61.75], [83.25, 61.65], [83.5, 61.75], [83.75, 61.65], [84.0, 61.75], [84.25, 61.65], [84.5, 61.75], [84.75, 61.65], [85.0, 61.75], [85.25, 61.65], [85.5, 61.75], [86.03, 61.53], [86.18, 61.18], [86.25, 61.15], [86.5, 61.25], [86.75, 61.15], [87.0, 61.25], [87.53, 61.03], [87.75, 60.5], [87.65, 60.25], [87.75, 60.0], [87.53, 59.47], [87.0, 59.25], [86.75, 59.35], [86.5, 59.25], [86.25, 59.35], [86.0, 59.25], [85.75, 59.35], [85.68, 59.32], [85.53, 58.97], [85.0, 58.75], [84.75, 58.85], [84.5, 58.75], [84.25, 58.85], [84.0, 58.75], [83.75, 58.85], [83.5, 58.75], [83.25, 58.85], [83.0, 58.75], [82.75, 58.85], [82.5, 58.75], [82.25, 58.85], [82.0, 58.75], [81.47, 58.97], [81.25, 59.5], [81.47, 60.03], [82.0, 60.25], [81.47, 60.47], [81.25, 61.0], [81.35, 61.25], [81.25, 61.5], [81.47, 62.03]], [[82.25, 60.15], [82.32, 60.18], [82.35, 60.25], [82.32, 60.32], [82.25, 60.35], [82.0, 60.25], [82.25, 60.15]]]]}, "2012-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.47, 62.03], [82.0, 62.25], [82.53, 62.03], [82.68, 61.68], [82.75, 61.65], [83.0, 61.75], [83.25, 61.65], [83.5, 61.75], [83.75, 61.65], [84.0, 61.75], [84.25, 61.65], [84.5, 61.75], [84.75, 61.65], [85.0, 61.75], [85.25, 61.65], [85.5, 61.75], [86.03, 61.53], [86.18, 61.18], [86.25, 61.15], [86.5, 61.25], [86.75, 61.15], [87.0, 61.25], [87.53, 61.03], [87.75, 60.5], [87.65, 60.25], [87.75, 60.0], [87.53, 59.47], [87.0, 59.25], [86.75, 59.35], [86.5, 59.25], [86.25, 59.35], [86.0, 59.25], [85.75, 59.35], [85.68, 59.32], [85.53, 58.97], [85.0, 58.75], [84.75, 58.85], [84.5, 58.75], [84.25, 58.85], [84.0, 58.75], [83.75, 58.85], [83.5, 58.75], [83.25, 58.85], [83.0, 58.75], [82.75, 58.85], [82.5, 58.75], [82.25, 58.85], [82.0, 58.75], [81.47, 58.97], [81.25, 59.5], [81.47, 60.03], [82.0, 60.25], [81.47, 60.47], [81.25, 61.0], [81.35, 61.25], [81.25, 61.5], [81.47, 62.03]], [[82.25, 60.15], [82.32, 60.18], [82.35, 60.25], [82.32, 60.32], [82.25, 60.35], [82.0, 60.25], [82.25, 60.15]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -10.750979339191872}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.450756542929323}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-13.289760332519734, -14.230373342793314, -14.268095851553767]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-14.856075328881445, -15.52604597792515, -15.56181473125173]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.993934246633808, -9.675595507328381, -9.682739874825769]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.331886698678034, -10.71659784993966, -10.750979339191872]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7190270645157124, -1.7931774422709434, -1.80842189088096]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9817527914395958, -1.9604389789700079, -2.007201473774148]}}