{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:06.433454", "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-Oct-01_to_2017-Oct-03_126.5_49.0"}, "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": 2017100000076}, "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 01 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 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": 90123.59477339903}, "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": ["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": 49.0}, "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": 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": 124.25}, "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": 48.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.75, 50.5], [123.97, 51.03], [124.32, 51.18], [124.47, 51.53], [125.0, 51.75], [125.53, 51.53], [125.68, 51.18], [125.75, 51.15], [125.82, 51.18], [125.97, 51.53], [126.5, 51.75], [127.03, 51.53], [127.18, 51.18], [127.25, 51.15], [127.32, 51.18], [127.47, 51.53], [128.0, 51.75], [128.53, 51.53], [128.7, 51.13], [129.0, 51.25], [129.53, 51.03], [129.75, 50.5], [129.53, 49.97], [129.18, 49.82], [129.15, 49.75], [129.18, 49.68], [129.25, 49.65], [129.5, 49.75], [130.03, 49.53], [130.25, 49.0], [130.15, 48.75], [130.25, 48.5], [130.03, 47.97], [129.5, 47.75], [129.25, 47.85], [129.0, 47.75], [128.75, 47.85], [128.5, 47.75], [128.25, 47.85], [128.0, 47.75], [127.75, 47.85], [127.5, 47.75], [127.25, 47.85], [127.0, 47.75], [126.75, 47.85], [126.5, 47.75], [126.25, 47.85], [126.0, 47.75], [125.47, 47.97], [125.32, 48.32], [124.97, 48.47], [124.82, 48.82], [124.47, 48.97], [124.25, 49.5], [124.35, 49.75], [124.32, 49.82], [123.97, 49.97], [123.75, 50.5]]]]}, "2017-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[123.75, 50.5], [123.97, 51.03], [124.32, 51.18], [124.47, 51.53], [125.0, 51.75], [125.53, 51.53], [125.68, 51.18], [125.75, 51.15], [125.82, 51.18], [125.97, 51.53], [126.5, 51.75], [127.03, 51.53], [127.18, 51.18], [127.25, 51.15], [127.32, 51.18], [127.47, 51.53], [128.0, 51.75], [128.53, 51.53], [128.7, 51.13], [129.0, 51.25], [129.53, 51.03], [129.75, 50.5], [129.53, 49.97], [129.18, 49.82], [129.15, 49.75], [129.18, 49.68], [129.25, 49.65], [129.5, 49.75], [130.03, 49.53], [130.25, 49.0], [130.15, 48.75], [130.25, 48.5], [130.03, 47.97], [129.5, 47.75], [129.25, 47.85], [129.0, 47.75], [128.75, 47.85], [128.5, 47.75], [128.25, 47.85], [128.0, 47.75], [127.75, 47.85], [127.5, 47.75], [127.25, 47.85], [127.0, 47.75], [126.75, 47.85], [126.5, 47.75], [126.25, 47.85], [126.0, 47.75], [125.47, 47.97], [125.32, 48.32], [124.97, 48.47], [124.82, 48.82], [124.47, 48.97], [124.25, 49.5], [124.35, 49.75], [124.32, 49.82], [123.97, 49.97], [123.75, 50.5]]]]}, "2017-10-03T11:30:00.000000000": 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[123.75, 50.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.972961643089775}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.611005710542713}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [1.4655731291626921, 1.374628607375655, 1.394592843265059]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-0.11911204095349603, -0.3215573069613811, 0.06050955283086523]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.841379082465596, -5.643122076880166, -5.348515972282376]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.972961643089775, -6.379714237415271, -6.1325980399231526]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5709077336495096, -1.5394515124023385, -1.4699016971058396]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8488312406019367, -1.6623577398767597, -1.7058624173230117]}}