{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:31.962419", "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": "2011-Jan-15_to_2011-Jan-17_114.5_20.0"}, "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": 2011010000784}, "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": "January 15 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 17 2011"}, "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": 95372.27195577383}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia", "S.E.Asia"]}, "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": ["South China Sea"]}, "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": 20.0}, "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": 114.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 113.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 117.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.97, 19.53], [113.32, 19.68], [113.35, 19.75], [113.32, 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"2011-01-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[112.97, 19.53], [113.32, 19.68], [113.35, 19.75], [113.32, 19.82], [112.97, 19.97], [112.75, 20.5], [112.97, 21.03], [113.32, 21.18], [113.47, 21.53], [113.82, 21.68], [113.97, 22.03], [114.32, 22.18], [114.35, 22.25], [114.25, 22.5], [114.47, 23.03], [115.0, 23.25], [115.25, 23.15], [115.32, 23.18], [115.35, 23.25], [115.25, 23.5], [115.47, 24.03], [116.0, 24.25], [116.53, 24.03], [116.75, 23.5], [116.65, 23.25], [116.7, 23.13], [117.0, 23.25], [117.53, 23.03], [117.75, 22.5], [117.65, 22.25], [117.75, 22.0], [117.53, 21.47], [117.0, 21.25], [116.75, 21.35], [116.5, 21.25], [116.25, 21.35], [116.18, 21.32], [116.03, 20.97], [115.68, 20.82], [115.63, 20.7], [116.03, 20.53], [116.25, 20.0], [116.15, 19.75], [116.25, 19.5], [116.03, 18.97], [115.68, 18.82], [115.53, 18.47], [115.18, 18.32], [115.03, 17.97], [114.5, 17.75], [114.25, 17.85], [114.0, 17.75], [113.75, 17.85], [113.5, 17.75], [112.97, 17.97], [112.75, 18.5], [112.85, 18.75], [112.75, 19.0], [112.97, 19.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.417722536743781}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.0700196699386137}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.658510142241255, 15.924403473871052, 17.37213225911279]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.158541925056113, 7.113440440699549, 9.112723603009329]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.019627187184185, -3.7884398695855075, -2.4019919530461493]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.355896217738291, -6.417722536743781, -4.486328378468954]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7917776441034179, -2.261379571435331, -1.4552695085376979]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.181502400146954, -2.3713894950135574, -1.570876583111443]}}