{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:53:30.933919", "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": "2026-May-29_to_2026-Jun-02_83.5_24.0"}, "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": 2026050000726}, "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 29 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 02 2026"}, "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": 76896.25996695033}, "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": []}, "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": 24.0}, "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": 83.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "83.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 81.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 85.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[83.25, 25.0], [83.47, 25.53], [84.0, 25.75], [84.53, 25.53], [84.68, 25.18], [85.03, 25.03], [85.18, 24.68], [85.53, 24.53], [85.75, 24.0], [85.53, 23.47], [85.18, 23.32], [85.15, 23.25], [85.25, 23.0], [85.03, 22.47], [84.5, 22.25], [83.97, 22.47], [83.75, 23.0], [83.85, 23.25], [83.82, 23.32], [83.75, 23.35], [83.5, 23.25], [82.97, 23.47], [82.75, 24.0], [82.97, 24.53], [83.32, 24.68], [83.35, 24.75], [83.25, 25.0]]]]}, "2026-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.75, 22.0], [80.97, 22.53], [81.5, 22.75], [81.75, 22.65], [81.82, 22.68], [81.85, 22.75], [81.75, 23.0], [81.97, 23.53], [82.5, 23.75], [82.75, 23.65], [82.88, 23.7], [82.75, 24.0], [82.97, 24.53], [83.32, 24.68], [83.35, 24.75], [83.25, 25.0], [83.47, 25.53], [84.0, 25.75], [84.53, 25.53], [84.68, 25.18], [85.03, 25.03], [85.18, 24.68], [85.53, 24.53], [85.75, 24.0], [85.53, 23.47], [85.18, 23.32], [85.15, 23.25], [85.25, 23.0], [85.03, 22.47], [84.68, 22.32], [84.65, 22.25], [84.75, 22.0], [84.65, 21.75], [84.75, 21.5], [84.53, 20.97], [84.0, 20.75], [83.75, 20.85], [83.5, 20.75], [83.25, 20.85], [83.0, 20.75], [82.5, 20.96], [82.0, 20.75], [81.47, 20.97], [81.32, 21.32], [80.97, 21.47], [80.75, 22.0]]]]}, "2026-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.75, 22.0], [80.97, 22.53], [81.5, 22.75], [81.75, 22.65], [81.82, 22.68], [81.85, 22.75], [81.75, 23.0], [81.97, 23.53], [82.5, 23.75], [82.75, 23.65], [82.88, 23.7], [82.75, 24.0], [82.97, 24.53], [83.32, 24.68], [83.35, 24.75], [83.25, 25.0], [83.47, 25.53], [84.0, 25.75], [84.53, 25.53], [84.68, 25.18], [85.03, 25.03], [85.18, 24.68], [85.53, 24.53], [85.75, 24.0], [85.53, 23.47], [85.18, 23.32], [85.15, 23.25], [85.25, 23.0], [85.03, 22.47], [84.68, 22.32], [84.65, 22.25], [84.75, 22.0], [84.65, 21.75], [84.75, 21.5], [84.53, 20.97], [84.0, 20.75], [83.75, 20.85], [83.5, 20.75], [83.25, 20.85], [83.0, 20.75], [82.5, 20.96], [82.0, 20.75], [81.47, 20.97], [81.32, 21.32], [80.97, 21.47], [80.75, 22.0]]]]}, "2026-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[80.75, 22.0], [80.97, 22.53], [81.5, 22.75], [81.75, 22.65], [81.82, 22.68], [81.85, 22.75], [81.75, 23.0], [81.97, 23.53], [82.5, 23.75], [82.75, 23.65], [82.88, 23.7], [82.75, 24.0], [82.97, 24.53], [83.32, 24.68], [83.47, 25.03], [84.0, 25.25], [84.53, 25.03], [84.68, 24.68], [84.75, 24.65], [85.0, 24.75], [85.53, 24.53], [85.75, 24.0], [85.53, 23.47], [85.18, 23.32], [85.15, 23.25], [85.25, 23.0], [85.03, 22.47], [84.68, 22.32], [84.65, 22.25], [84.75, 22.0], [84.65, 21.75], [84.75, 21.5], [84.53, 20.97], [84.0, 20.75], [83.75, 20.85], [83.5, 20.75], [83.25, 20.85], [83.0, 20.75], [82.5, 20.96], [82.0, 20.75], [81.47, 20.97], [81.32, 21.32], [80.97, 21.47], [80.75, 22.0]]]]}, "2026-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.85, 22.75], [81.75, 23.0], [81.97, 23.53], [82.5, 23.75], [82.93, 23.57], [82.75, 24.0], [82.97, 24.53], [83.5, 24.75], [84.03, 24.53], [84.25, 24.0], [84.03, 23.47], [83.5, 23.25], 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t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.361704365397941, -4.85304389269409, -3.6318207759036465, -3.2189789025151527, -2.893272531137484]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.3149920613011545, -5.7207906768219345, -4.79378503113503, -4.111338061224387, -3.259369631319089]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8033594104069204, -2.1474557549426314, -1.6273266736866328, -1.4165023254705837, -1.2548995747104834]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1133840090259692, -2.49946815125299, -2.0747940403438254, -1.6968908711962416, -1.4167327549069217]}}