{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:08.543632", "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": "2024-Sep-19_to_2024-Sep-21_130.5_47.5"}, "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": 2024090000435}, "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": "September 19 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 21 2024"}, "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": 60776.884744471165}, "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": ["China", "Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "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": 47.5}, "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": 130.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.75, 47.5], [129.97, 48.03], [130.32, 48.18], [130.47, 48.53], [131.0, 48.75], [131.5, 48.54], [132.0, 48.75], [132.25, 48.65], [132.5, 48.75], [133.03, 48.53], [133.18, 48.18], [133.25, 48.15], [133.32, 48.18], [133.47, 48.53], [134.0, 48.75], [134.25, 48.65], [134.5, 48.75], [134.75, 48.65], [135.0, 48.75], [135.53, 48.53], [135.68, 48.18], [136.03, 48.03], [136.25, 47.5], [136.03, 46.97], [135.5, 46.75], [135.25, 46.85], [135.0, 46.75], [134.75, 46.85], [134.5, 46.75], [134.25, 46.85], [134.18, 46.82], [134.03, 46.47], [133.5, 46.25], [133.25, 46.35], [133.18, 46.32], [133.03, 45.97], [132.5, 45.75], [132.25, 45.85], [132.0, 45.75], [131.75, 45.85], [131.5, 45.75], [131.0, 45.96], [130.5, 45.75], [130.25, 45.85], [130.0, 45.75], [129.47, 45.97], [129.25, 46.5], [129.47, 47.03], [129.82, 47.18], [129.85, 47.25], [129.75, 47.5]]]]}, "2024-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.75, 47.5], [129.97, 48.03], [130.32, 48.18], [130.47, 48.53], [131.0, 48.75], [131.5, 48.54], [132.0, 48.75], [132.25, 48.65], [132.5, 48.75], [133.03, 48.53], [133.18, 48.18], [133.25, 48.15], [133.32, 48.18], [133.47, 48.53], [134.0, 48.75], [134.25, 48.65], [134.5, 48.75], [134.75, 48.65], [135.0, 48.75], [135.53, 48.53], [135.68, 48.18], [136.03, 48.03], [136.25, 47.5], [136.03, 46.97], [135.5, 46.75], [135.25, 46.85], [135.0, 46.75], [134.75, 46.85], [134.5, 46.75], [134.25, 46.85], [134.18, 46.82], [134.03, 46.47], [133.5, 46.25], [133.25, 46.35], [133.18, 46.32], [133.03, 45.97], [132.5, 45.75], [132.25, 45.85], [132.0, 45.75], [131.75, 45.85], [131.5, 45.75], [131.0, 45.96], [130.5, 45.75], [130.25, 45.85], [130.0, 45.75], [129.47, 45.97], [129.25, 46.5], [129.47, 47.03], [129.82, 47.18], [129.85, 47.25], [129.75, 47.5]]]]}, "2024-09-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[129.75, 47.5], [129.97, 48.03], [130.32, 48.18], [130.47, 48.53], [131.0, 48.75], [131.5, 48.54], [132.0, 48.75], [132.25, 48.65], [132.5, 48.75], [133.03, 48.53], [133.18, 48.18], [133.25, 48.15], [133.32, 48.18], [133.47, 48.53], [134.0, 48.75], [134.25, 48.65], [134.5, 48.75], [134.75, 48.65], [135.0, 48.75], [135.53, 48.53], [135.68, 48.18], [136.03, 48.03], [136.25, 47.5], [136.03, 46.97], [135.5, 46.75], [135.25, 46.85], [135.0, 46.75], [134.75, 46.85], [134.5, 46.75], [134.25, 46.85], [134.18, 46.82], [134.03, 46.47], [133.5, 46.25], [133.25, 46.35], [133.18, 46.32], [133.03, 45.97], [132.5, 45.75], [132.25, 45.85], [132.0, 45.75], [131.75, 45.85], [131.5, 45.75], [131.0, 45.96], [130.5, 45.75], [130.25, 45.85], [130.0, 45.75], [129.47, 45.97], [129.25, 46.5], [129.47, 47.03], [129.82, 47.18], [129.85, 47.25], [129.75, 47.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.926948869290072}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.002566580346909}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.207606164340348, 7.942750768551946, 7.949382904754316]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.8335294087727902, 6.7686083475749115, 6.973432159423851]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.773224343222999, -4.752855712532937, -4.481619685284792]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.926948869290072, -5.6262418321741166, -4.980913272522514]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0172062252386014, -1.6426825783626386, -1.5440314265275588]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7143672150828846, -1.8932014094893994, -1.7066724757078517]}}