{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:25.981124", "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": "2017-Nov-22_to_2017-Nov-24_102.5_60.0"}, "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": 2017110000830}, "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": "November 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2017"}, "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": 59096.74055679717}, "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": 60.0}, "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": 102.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "102.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 99.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 104.75}, "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": 62.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 61.5], [98.97, 62.03], [99.5, 62.25], [99.75, 62.15], 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[100.75, 62.65], [100.82, 62.68], [100.97, 63.03], [101.5, 63.25], [102.03, 63.03], [102.18, 62.68], [102.53, 62.53], [102.68, 62.18], [103.03, 62.03], [103.25, 61.5], [103.15, 61.25], [103.18, 61.18], [103.53, 61.03], [103.68, 60.68], [103.75, 60.65], [104.0, 60.75], [104.53, 60.53], [104.68, 60.18], [105.03, 60.03], [105.25, 59.5], [105.03, 58.97], [104.68, 58.82], [104.53, 58.47], [104.0, 58.25], [103.75, 58.35], [103.5, 58.25], [102.97, 58.47], [102.82, 58.82], [102.75, 58.85], [102.5, 58.75], [101.97, 58.97], [101.82, 59.32], [101.75, 59.35], [101.5, 59.25], [101.25, 59.35], [101.0, 59.25], [100.75, 59.35], [100.5, 59.25], [100.25, 59.35], [100.0, 59.25], [99.47, 59.47], [99.25, 60.0], [99.46, 60.5], [99.32, 60.82], [98.97, 60.97], [98.75, 61.5]]]]}, "2017-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[98.75, 61.5], [98.97, 62.03], [99.5, 62.25], [99.75, 62.15], [99.82, 62.18], [99.97, 62.53], [100.5, 62.75], [100.75, 62.65], [100.82, 62.68], [100.97, 63.03], [101.5, 63.25], [102.03, 63.03], [102.18, 62.68], [102.53, 62.53], [102.68, 62.18], [103.03, 62.03], [103.25, 61.5], [103.15, 61.25], [103.18, 61.18], [103.53, 61.03], [103.68, 60.68], [103.75, 60.65], [104.0, 60.75], [104.53, 60.53], [104.68, 60.18], [105.03, 60.03], [105.25, 59.5], [105.03, 58.97], [104.68, 58.82], [104.53, 58.47], [104.0, 58.25], [103.75, 58.35], [103.5, 58.25], [102.97, 58.47], [102.82, 58.82], [102.75, 58.85], [102.5, 58.75], [101.97, 58.97], [101.82, 59.32], [101.75, 59.35], [101.5, 59.25], [101.25, 59.35], [101.0, 59.25], [100.75, 59.35], [100.5, 59.25], [100.25, 59.35], [100.0, 59.25], [99.47, 59.47], [99.25, 60.0], [99.46, 60.5], [99.32, 60.82], [98.97, 60.97], [98.75, 61.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -17.11729034165569}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -14.759913494378662}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-35.177438354605215, -35.24431266314849, -36.64370652724497]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-37.27139003721962, -38.13133114573316, -40.75320903644442]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-14.518544400699248, -14.31505265807029, -15.446143424366433]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-15.75009486792709, -15.334555500736542, -17.11729034165569]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4584772809109363, -1.481063207682585, -1.6152908003837725]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5769083978516865, -1.583836469909257, -1.765810465379126]}}