{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:58.537159", "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": "2015-Oct-15_to_2015-Oct-18_89.0_62.5"}, "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": 2015100000392}, "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 15 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 18 2015"}, "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": 53354.297538778126}, "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": 62.5}, "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": 89.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "89.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 86.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 91.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 59.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-10-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.97, 62.03], [86.5, 62.25], [87.03, 62.03], [87.25, 61.5], [87.04, 61.0], [87.25, 60.5], [87.03, 59.97], [86.5, 59.75], [85.97, 59.97], [85.75, 60.5], [85.96, 61.0], [85.75, 61.5], [85.97, 62.03]]]]}, "2015-10-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.97, 62.03], [86.32, 62.18], [86.47, 62.53], [87.0, 62.75], [87.25, 62.65], [87.5, 62.75], [87.75, 62.65], [88.0, 62.75], [88.25, 62.65], [88.32, 62.68], [88.47, 63.03], [89.0, 63.25], [89.25, 63.15], [89.5, 63.25], [90.0, 63.04], [90.5, 63.25], [91.03, 63.03], [91.18, 62.68], [91.53, 62.53], [91.75, 62.0], [91.53, 61.47], [91.18, 61.32], [91.03, 60.97], [90.68, 60.82], [90.53, 60.47], [90.18, 60.32], [90.03, 59.97], [89.68, 59.82], [89.53, 59.47], [89.0, 59.25], [88.75, 59.35], [88.5, 59.25], [87.97, 59.47], [87.82, 59.82], [87.75, 59.85], [87.5, 59.75], [87.25, 59.85], [87.0, 59.75], [86.75, 59.85], [86.5, 59.75], [85.97, 59.97], [85.75, 60.5], [85.96, 61.0], [85.75, 61.5], [85.97, 62.03]]]]}, "2015-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.97, 62.03], [86.32, 62.18], [86.47, 62.53], [87.0, 62.75], [87.25, 62.65], [87.5, 62.75], [87.75, 62.65], [88.0, 62.75], [88.25, 62.65], [88.32, 62.68], [88.47, 63.03], [89.0, 63.25], [89.25, 63.15], [89.5, 63.25], [90.0, 63.04], [90.5, 63.25], [91.03, 63.03], [91.18, 62.68], [91.53, 62.53], [91.75, 62.0], [91.53, 61.47], [91.18, 61.32], [91.03, 60.97], [90.68, 60.82], [90.53, 60.47], [90.18, 60.32], [90.03, 59.97], [89.68, 59.82], [89.53, 59.47], [89.0, 59.25], [88.75, 59.35], [88.5, 59.25], [87.97, 59.47], [87.82, 59.82], [87.75, 59.85], [87.5, 59.75], [87.25, 59.85], [87.0, 59.75], [86.75, 59.85], [86.5, 59.75], [85.97, 59.97], [85.75, 60.5], [85.96, 61.0], [85.75, 61.5], [85.97, 62.03]]]]}, "2015-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[87.0, 62.75], [87.25, 62.65], [87.5, 62.75], [87.75, 62.65], [88.0, 62.75], [88.25, 62.65], [88.32, 62.68], [88.47, 63.03], [89.0, 63.25], [89.25, 63.15], [89.5, 63.25], [90.0, 63.04], [90.5, 63.25], [91.03, 63.03], [91.18, 62.68], [91.53, 62.53], [91.75, 62.0], [91.53, 61.47], [91.18, 61.32], [91.03, 60.97], [90.68, 60.82], [90.53, 60.47], [90.18, 60.32], [90.03, 59.97], [89.68, 59.82], [89.53, 59.47], [89.0, 59.25], [88.75, 59.35], [88.5, 59.25], [87.97, 59.47], [87.82, 59.82], [87.75, 59.85], [87.5, 59.75], [87.25, 59.85], [87.0, 59.75], [86.47, 59.97], [86.25, 60.5], [86.38, 60.8], [85.97, 60.97], [85.75, 61.5], [85.97, 62.03], [86.32, 62.18], [86.47, 62.53], [87.0, 62.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.945060197350074}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.906026453796973}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-5.826708562897238, -7.8400672448132696, -8.918907655992541, -9.74320063244403]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-6.076566082977422, -9.994622720401651, -12.25064409306907, -13.317410650354077]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.0601296443658725, -6.334155259254542, -7.047095180520681, -7.454617381235154]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.165019307877344, -7.095109115130185, -8.866945899979157, -9.945060197350074]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2107529348610968, -1.4591481773914619, -1.5993712459354528, -1.6725286074195584]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2143605567870592, -1.6611404554639944, -1.9761948301451124, -2.1051908218164206]}}