{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:36.313289", "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-21_to_2012-Oct-23_126.5_59.5"}, "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": 2012100000857}, "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 21 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 23 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": 64627.028037814234}, "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"]}, "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": 59.5}, "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": 126.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "126.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 123.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 129.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 58.75}, "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": {"2012-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.5, 61.75], [124.75, 61.65], [124.82, 61.68], [124.97, 62.03], [125.5, 62.25], [125.75, 62.15], [126.0, 62.25], [126.53, 62.03], [126.68, 61.68], [126.75, 61.65], [127.0, 61.75], [127.25, 61.65], [127.5, 61.75], [128.03, 61.53], [128.18, 61.18], [128.25, 61.15], [128.5, 61.25], [128.75, 61.15], [129.0, 61.25], [129.25, 61.15], [129.5, 61.25], [130.03, 61.03], [130.25, 60.5], [130.03, 59.97], [129.5, 59.75], [129.25, 59.85], [129.18, 59.82], [129.03, 59.47], [128.68, 59.32], [128.53, 58.97], [128.0, 58.75], [127.75, 58.85], [127.68, 58.82], [127.53, 58.47], [127.0, 58.25], [126.75, 58.35], [126.5, 58.25], [126.25, 58.35], [126.0, 58.25], [125.75, 58.35], [125.5, 58.25], [125.25, 58.35], [125.0, 58.25], [124.75, 58.35], [124.5, 58.25], [123.97, 58.47], [123.75, 59.0], [123.85, 59.25], [123.75, 59.5], [123.88, 59.8], [123.47, 59.97], [123.25, 60.5], [123.47, 61.03], [123.82, 61.18], [123.97, 61.53], [124.5, 61.75]]]]}, "2012-10-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.5, 61.75], [124.75, 61.65], [124.82, 61.68], [124.97, 62.03], [125.5, 62.25], [125.75, 62.15], [126.0, 62.25], [126.53, 62.03], [126.68, 61.68], [126.75, 61.65], [127.0, 61.75], [127.25, 61.65], [127.5, 61.75], [128.03, 61.53], [128.18, 61.18], [128.25, 61.15], [128.5, 61.25], [128.75, 61.15], [129.0, 61.25], [129.25, 61.15], [129.5, 61.25], [130.03, 61.03], [130.25, 60.5], [130.03, 59.97], [129.5, 59.75], [129.25, 59.85], [129.18, 59.82], [129.03, 59.47], [128.68, 59.32], [128.53, 58.97], [128.0, 58.75], [127.75, 58.85], [127.68, 58.82], [127.53, 58.47], [127.0, 58.25], [126.75, 58.35], [126.5, 58.25], [126.25, 58.35], [126.0, 58.25], [125.75, 58.35], [125.5, 58.25], [125.25, 58.35], [125.0, 58.25], [124.75, 58.35], [124.5, 58.25], [123.97, 58.47], [123.75, 59.0], [123.85, 59.25], [123.75, 59.5], [123.88, 59.8], [123.47, 59.97], [123.25, 60.5], [123.47, 61.03], [123.82, 61.18], [123.97, 61.53], [124.5, 61.75]]]]}, "2012-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.5, 61.75], [124.75, 61.65], [124.82, 61.68], [124.97, 62.03], [125.5, 62.25], [125.75, 62.15], [126.0, 62.25], [126.53, 62.03], [126.68, 61.68], [126.75, 61.65], [127.0, 61.75], [127.25, 61.65], [127.5, 61.75], [128.03, 61.53], [128.18, 61.18], [128.25, 61.15], [128.5, 61.25], [128.75, 61.15], [129.0, 61.25], [129.25, 61.15], [129.5, 61.25], [130.03, 61.03], [130.25, 60.5], [130.03, 59.97], [129.5, 59.75], [129.25, 59.85], [129.18, 59.82], [129.03, 59.47], [128.68, 59.32], [128.53, 58.97], [128.0, 58.75], [127.75, 58.85], [127.68, 58.82], [127.53, 58.47], [127.0, 58.25], [126.75, 58.35], [126.5, 58.25], [126.25, 58.35], [126.0, 58.25], [125.75, 58.35], [125.5, 58.25], [125.25, 58.35], [125.0, 58.25], [124.75, 58.35], [124.5, 58.25], [123.97, 58.47], [123.75, 59.0], [123.85, 59.25], [123.75, 59.5], [123.88, 59.8], [123.47, 59.97], [123.25, 60.5], [123.47, 61.03], [123.82, 61.18], [123.97, 61.53], [124.5, 61.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -13.305235798208344}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -9.016217589564492}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-15.597407943077542, -19.387960733048146, -16.84828539298877]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-18.017887128040343, -21.735282563053573, -19.246945290815432]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-7.688008558008826, -11.112920639583221, -8.247723571101439]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-10.486181224870506, -13.305235798208344, -10.429731245327616]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6371157192258776, -2.446359729583122, -1.8130159278848819]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0995434946323672, -2.901531271750485, -2.313221872137942]}}