{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:17.225601", "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-Jan-05_to_2026-Jan-09_76.5_16.0"}, "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": 2026010000211}, "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 05 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 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": 68276.69751190291}, "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": 16.0}, "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": 76.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "76.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 74.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 78.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[75.97, 16.53], [76.5, 16.75], [77.03, 16.53], [77.25, 16.0], 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16.68], [75.75, 16.65], [76.0, 16.75], [76.25, 16.65], [76.32, 16.68], [76.47, 17.03], [76.88, 17.2], [76.75, 17.5], [76.97, 18.03], [77.5, 18.25], [78.0, 18.04], [78.5, 18.25], [79.03, 18.03], [79.25, 17.5], [79.15, 17.25], [79.25, 17.0], [79.15, 16.75], [79.25, 16.5], [79.15, 16.25], [79.25, 16.0], [79.03, 15.47], [78.5, 15.25], [78.25, 15.35], [78.18, 15.32], [78.03, 14.97], [77.5, 14.75], [77.25, 14.85], [77.0, 14.75], [76.75, 14.85], [76.68, 14.82], [76.53, 14.47], [76.0, 14.25], [75.47, 14.47], [75.32, 14.82], [74.97, 14.97], [74.82, 15.32], [74.47, 15.47], [74.25, 16.0], [74.35, 16.25], [74.25, 16.5], [74.47, 17.03]]]]}, "2026-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.47, 17.03], [75.0, 17.25], [75.53, 17.03], [75.68, 16.68], [75.75, 16.65], [76.0, 16.75], [76.25, 16.65], [76.32, 16.68], [76.47, 17.03], [76.88, 17.2], [76.75, 17.5], [76.97, 18.03], [77.5, 18.25], [78.0, 18.04], [78.5, 18.25], [79.03, 18.03], [79.25, 17.5], [79.15, 17.25], [79.25, 17.0], [79.15, 16.75], [79.25, 16.5], [79.15, 16.25], [79.25, 16.0], [79.03, 15.47], [78.5, 15.25], [78.25, 15.35], [78.18, 15.32], [78.03, 14.97], [77.5, 14.75], [77.25, 14.85], [77.0, 14.75], [76.75, 14.85], [76.68, 14.82], [76.53, 14.47], [76.0, 14.25], [75.47, 14.47], [75.32, 14.82], [74.97, 14.97], [74.82, 15.32], [74.47, 15.47], [74.25, 16.0], [74.35, 16.25], [74.25, 16.5], [74.47, 17.03]]]]}, "2026-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.47, 17.03], [75.0, 17.25], [75.53, 17.03], [75.68, 16.68], [75.75, 16.65], [76.0, 16.75], [76.25, 16.65], [76.32, 16.68], [76.47, 17.03], [76.88, 17.2], [76.75, 17.5], [76.97, 18.03], [77.5, 18.25], [78.0, 18.04], [78.5, 18.25], [79.03, 18.03], [79.25, 17.5], [79.15, 17.25], [79.25, 17.0], [79.15, 16.75], [79.25, 16.5], [79.15, 16.25], [79.25, 16.0], [79.03, 15.47], [78.5, 15.25], [78.25, 15.35], [78.18, 15.32], [78.03, 14.97], [77.5, 14.75], [77.25, 14.85], [77.0, 14.75], [76.75, 14.85], [76.68, 14.82], [76.53, 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"value": [-1.8742640447492533, -1.955343130703838, -2.124018808235425, -2.0727515414225937, -2.1200792293024127]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.013598068784745, -2.4005245097033026, -2.7570024744774173, -2.749576637364214, -2.762957327570348]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3821968386544383, -1.42819284940244, -1.5311001678540581, -1.4998951028026712, -1.5406170689857317]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4346353826915144, -1.709370203118346, -1.9654694575035945, -1.7667444974746385, -1.8384976665170694]}}