{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:40.055832", "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": "2012-Feb-28_to_2012-Mar-03_85.0_30.5"}, "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": 2012020001564}, "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": "February 28 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 106192.39466547972}, "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": ["Tibetan-Plateau"]}, "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": 30.5}, "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": 85.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "85.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 88.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[85.0, 31.25], [85.53, 31.03], [85.75, 30.5], [85.53, 29.97], [85.0, 29.75], [84.47, 29.97], [84.25, 30.5], [84.47, 31.03], [85.0, 31.25]]]]}, "2012-02-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.75, 31.5], [83.97, 32.03], [84.5, 32.25], [84.75, 32.15], [85.0, 32.25], [85.25, 32.15], [85.32, 32.18], [85.47, 32.53], [86.0, 32.75], [86.25, 32.65], [86.32, 32.68], [86.47, 33.03], [87.0, 33.25], [87.25, 33.15], [87.5, 33.25], [88.03, 33.03], [88.25, 32.5], [88.03, 31.97], [87.63, 31.8], [87.68, 31.68], [87.75, 31.65], [88.0, 31.75], [88.53, 31.53], [88.68, 31.18], [89.03, 31.03], [89.25, 30.5], [89.03, 29.97], [88.68, 29.82], [88.65, 29.75], [88.75, 29.5], [88.53, 28.97], [88.0, 28.75], [87.75, 28.85], [87.5, 28.75], [87.25, 28.85], [87.0, 28.75], [86.75, 28.85], [86.5, 28.75], [86.25, 28.85], [86.0, 28.75], [85.47, 28.97], [85.32, 29.32], [85.25, 29.35], [85.0, 29.25], [84.47, 29.47], [84.3, 29.88], [84.0, 29.75], [83.47, 29.97], [83.25, 30.5], [83.47, 31.03], [83.82, 31.18], [83.85, 31.25], [83.75, 31.5]]]]}, 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-5.050198189165252, -5.677003206335233]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.887757594461448, -8.306150451271577, -8.066101940774189, -9.395983198838593, -10.395557383197712]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6302566539058758, -1.7530063408238399, -1.6997245939743029, -1.9019926671769043, -2.1600956517841334]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6302566539058758, -2.2714274200834397, -2.1290587685365834, -2.684337393550121, -2.548373451777239]}}