{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:39.999042", "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": "2018-May-12_to_2018-May-16_84.0_19.5"}, "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": 2018050000582}, "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": "May 12 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 2018"}, "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": 96308.31998065075}, "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": ["India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.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": ["Bay of Bengal"]}, "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": 19.5}, "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": 84.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "84.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 81.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 86.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 21.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.0, 20.25], [84.53, 20.03], [84.75, 19.5], [84.53, 18.97], [84.0, 18.75], [83.47, 18.97], [83.25, 19.5], [83.47, 20.03], [84.0, 20.25]]]]}, "2018-05-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.35, 18.25], [81.25, 18.5], [81.47, 19.03], [82.0, 19.25], [82.25, 19.15], [82.32, 19.18], [82.46, 19.5], [82.25, 20.0], [82.47, 20.53], [82.82, 20.68], [82.97, 21.03], [83.5, 21.25], [84.03, 21.03], [84.18, 20.68], [84.25, 20.65], [84.32, 20.68], [84.35, 20.75], [84.25, 21.0], [84.47, 21.53], [85.0, 21.75], [85.53, 21.53], [85.75, 21.0], [85.65, 20.75], [85.68, 20.68], [85.75, 20.65], [86.0, 20.75], [86.53, 20.53], [86.75, 20.0], [86.53, 19.47], [86.0, 19.25], [85.75, 19.35], [85.68, 19.32], [85.53, 18.97], [85.18, 18.82], [85.15, 18.75], [85.25, 18.5], [85.03, 17.97], [84.5, 17.75], [84.25, 17.85], [84.18, 17.82], [84.03, 17.47], [83.68, 17.32], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.5, 16.75], [82.25, 16.85], [82.0, 16.75], [81.47, 16.97], [81.25, 17.5], [81.35, 17.75], [81.25, 18.0], [81.35, 18.25]]]]}, 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"coordinates": [[[[81.35, 18.25], [81.25, 18.5], [81.47, 19.03], [82.0, 19.25], [82.25, 19.15], [82.32, 19.18], [82.46, 19.5], [82.25, 20.0], [82.47, 20.53], [82.82, 20.68], [82.97, 21.03], [83.5, 21.25], [84.03, 21.03], [84.18, 20.68], [84.25, 20.65], [84.32, 20.68], [84.35, 20.75], [84.25, 21.0], [84.47, 21.53], [85.0, 21.75], [85.25, 21.65], [85.5, 21.75], [85.75, 21.65], [86.0, 21.75], [86.53, 21.53], [86.75, 21.0], [86.65, 20.75], [86.75, 20.5], [86.65, 20.25], [86.75, 20.0], [86.53, 19.47], [86.0, 19.25], [85.75, 19.35], [85.68, 19.32], [85.53, 18.97], [85.18, 18.82], [85.15, 18.75], [85.25, 18.5], [85.03, 17.97], [84.5, 17.75], [84.25, 17.85], [84.18, 17.82], [84.03, 17.47], [83.68, 17.32], [83.53, 16.97], [83.0, 16.75], [82.75, 16.85], [82.5, 16.75], [82.25, 16.85], [82.0, 16.75], [81.47, 16.97], [81.25, 17.5], [81.35, 17.75], [81.25, 18.0], [81.35, 18.25]]]]}, "2018-05-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[84.75, 21.0], [84.97, 21.53], [85.5, 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24.146798721237985, 28.776841456604927]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8382012221853188, -2.2783124553381073, -3.56805589301761, -2.0174143098927804, -1.6140908803376988]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8382012221853188, -3.4861670354368357, -5.122249834504487, -2.789538871550292, -2.405752699045422]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.0360644711774911, -1.440324727727044, -2.394647956870542, -1.4030703402206173, -1.4493294517028399]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.0360644711774911, 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