{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:37.648915", "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-Oct-25_to_2011-Oct-28_109.0_26.5"}, "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": 2011100001128}, "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 25 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 114194.89954611383}, "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"]}, "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": 26.5}, "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": 109.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 106.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 31.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[106.47, 28.53], [106.82, 28.68], [106.85, 28.75], [106.75, 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28.68], [106.85, 28.75], [106.75, 29.0], [106.97, 29.53], [107.5, 29.75], [107.75, 29.65], [107.82, 29.68], [107.97, 30.03], [108.5, 30.25], [108.75, 30.15], [109.0, 30.25], [109.25, 30.15], [109.38, 30.2], [109.25, 30.5], [109.35, 30.75], [109.25, 31.0], [109.47, 31.53], [110.0, 31.75], [110.25, 31.65], [110.5, 31.75], [111.03, 31.53], [111.25, 31.0], [111.15, 30.75], [111.25, 30.5], [111.15, 30.25], [111.25, 30.0], [111.15, 29.75], [111.25, 29.5], [111.15, 29.25], [111.25, 29.0], [111.03, 28.47], [110.68, 28.32], [110.53, 27.97], [110.18, 27.82], [110.15, 27.75], [110.25, 27.5], [110.04, 27.0], [110.25, 26.5], [110.03, 25.97], [109.68, 25.82], [109.53, 25.47], [109.0, 25.25], [108.47, 25.47], [108.32, 25.82], [107.97, 25.97], [107.82, 26.32], [107.75, 26.35], [107.5, 26.25], [106.97, 26.47], [106.82, 26.82], [106.47, 26.97], [106.25, 27.5], [106.35, 27.75], [106.25, 28.0], [106.47, 28.53]]]]}, "2011-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.75, 26.5], 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anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.698263282948427, -4.509282109299458, -4.049747644122755, -4.6024438834666626]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.452223336912425, -5.357327459576766, -5.167047436166172, -4.958642693444119]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4654136496291583, -1.7710537414297083, -1.518300973307621, -1.4191947414979593]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.755337880507415, -2.340757500359821, -1.70137131465098, -1.570941474127377]}}