{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:57:43.153968", "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": "2025-Nov-26_to_2025-Nov-30_76.0_13.5"}, "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": 2025110000647}, "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": "November 26 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 30 2025"}, "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": 104773.61408087895}, "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": 13.5}, "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": 76.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "76.0\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": 78.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 10.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-11-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.0, 17.25], [78.53, 17.03], [78.75, 16.5], [78.53, 15.97], [78.0, 15.75], [77.47, 15.97], [77.25, 16.5], [77.47, 17.03], [78.0, 17.25]]]]}, "2025-11-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.82, 15.32], [74.47, 15.47], [74.25, 16.0], [74.47, 16.53], [75.0, 16.75], [75.53, 16.53], [75.68, 16.18], [75.75, 16.15], [75.82, 16.18], [75.97, 16.53], [76.5, 16.75], [76.75, 16.65], [76.82, 16.68], [76.97, 17.03], [77.5, 17.25], [77.75, 17.15], [78.0, 17.25], [78.53, 17.03], [78.75, 16.5], [78.65, 16.25], [78.75, 16.0], [78.53, 15.47], [78.18, 15.32], [78.03, 14.97], [77.68, 14.82], [77.65, 14.75], [77.75, 14.5], [77.65, 14.25], [77.75, 14.0], [77.53, 13.47], [77.18, 13.32], [77.15, 13.25], [77.25, 13.0], [77.15, 12.75], [77.25, 12.5], [77.13, 12.2], [77.53, 12.03], [77.75, 11.5], [77.53, 10.97], [77.18, 10.82], [77.03, 10.47], [76.5, 10.25], [75.97, 10.47], [75.82, 10.82], [75.47, 10.97], [75.25, 11.5], [75.35, 11.75], [75.25, 12.0], [75.35, 12.25], [75.25, 12.5], [75.35, 12.75], [75.32, 12.82], [74.97, 12.97], [74.75, 13.5], [74.88, 13.8], [74.47, 13.97], [74.25, 14.5], [74.47, 15.03], [74.82, 15.18], [74.85, 15.25], [74.82, 15.32]]]]}, "2025-11-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.82, 15.32], [74.47, 15.47], [74.25, 16.0], [74.47, 16.53], [75.0, 16.75], [75.53, 16.53], [75.68, 16.18], [75.75, 16.15], [75.82, 16.18], [75.97, 16.53], [76.5, 16.75], [76.75, 16.65], [76.82, 16.68], [76.97, 17.03], [77.5, 17.25], [77.75, 17.15], [78.0, 17.25], [78.53, 17.03], [78.75, 16.5], [78.65, 16.25], [78.75, 16.0], [78.53, 15.47], [78.18, 15.32], [78.03, 14.97], [77.68, 14.82], [77.65, 14.75], [77.75, 14.5], [77.65, 14.25], [77.75, 14.0], [77.53, 13.47], [77.18, 13.32], [77.15, 13.25], [77.25, 13.0], [77.15, 12.75], [77.25, 12.5], [77.13, 12.2], [77.53, 12.03], [77.75, 11.5], [77.53, 10.97], [77.18, 10.82], [77.03, 10.47], [76.5, 10.25], [75.97, 10.47], [75.82, 10.82], [75.47, 10.97], [75.25, 11.5], [75.35, 11.75], [75.25, 12.0], [75.35, 12.25], [75.25, 12.5], [75.35, 12.75], 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entire duration", "value": -1.9920768898285965}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.798696136474632, 21.731148710705043, 21.498401242210775, 21.296248663039478, 21.191740694912994]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.798696136474632, 19.073536173502646, 18.82000885009768, 19.084853108723962, 19.922527567545615]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.588297635712081, -1.8358926513495086, -2.007435475110732, -2.139285266625872, -2.0084754287472504]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.588297635712081, -2.3372995119753455, -2.7741286399249248, -2.9146025119811156, -2.4752249623168723]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.2871012036522624, -1.6578519154151465, -1.8114712916023967, -1.8971293330208734, -1.7195556716647304]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.2871012036522624, -2.1066346165582663, -2.567376754362064, -2.77541197151476, -2.090262026775869]}}