{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:18.167133", "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": "2022-Sep-10_to_2022-Sep-12_77.5_17.5"}, "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": 2022090000455}, "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": "September 10 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 12 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 50302.34735166811}, "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": 17.5}, "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": 77.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "77.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 75.25}, "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": 15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.97, 17.03], [75.5, 17.25], [75.75, 17.15], [75.82, 17.18], [75.85, 17.25], [75.75, 17.5], [75.97, 18.03], [76.32, 18.18], [76.47, 18.53], [77.0, 18.75], [77.25, 18.65], [77.5, 18.75], [78.03, 18.53], [78.18, 18.18], [78.53, 18.03], [78.75, 17.5], [78.53, 16.97], [78.18, 16.82], [78.03, 16.47], [77.5, 16.25], [77.25, 16.35], [77.18, 16.32], [77.15, 16.25], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.5, 14.75], [76.25, 14.85], [76.0, 14.75], [75.47, 14.97], [75.32, 15.32], [74.97, 15.47], [74.75, 16.0], [74.85, 16.25], [74.75, 16.5], [74.97, 17.03]]]]}, "2022-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.97, 17.03], [75.5, 17.25], [75.75, 17.15], [75.82, 17.18], [75.85, 17.25], [75.75, 17.5], [75.97, 18.03], [76.32, 18.18], [76.47, 18.53], [77.0, 18.75], [77.25, 18.65], [77.5, 18.75], [78.03, 18.53], [78.18, 18.18], [78.53, 18.03], [78.75, 17.5], [78.53, 16.97], [78.18, 16.82], [78.03, 16.47], [77.5, 16.25], [77.25, 16.35], [77.18, 16.32], [77.15, 16.25], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.5, 14.75], [76.25, 14.85], [76.0, 14.75], [75.47, 14.97], [75.32, 15.32], [74.97, 15.47], [74.75, 16.0], [74.85, 16.25], [74.75, 16.5], [74.97, 17.03]]]]}, "2022-09-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.97, 17.03], [75.5, 17.25], [75.75, 17.15], [75.82, 17.18], [75.85, 17.25], [75.75, 17.5], [75.97, 18.03], [76.32, 18.18], [76.47, 18.53], [77.0, 18.75], [77.25, 18.65], [77.5, 18.75], [78.03, 18.53], [78.18, 18.18], [78.53, 18.03], [78.75, 17.5], [78.53, 16.97], [78.18, 16.82], [78.03, 16.47], [77.5, 16.25], [77.25, 16.35], [77.18, 16.32], [77.15, 16.25], [77.25, 16.0], [77.15, 15.75], [77.25, 15.5], [77.03, 14.97], [76.5, 14.75], [76.25, 14.85], [76.0, 14.75], [75.47, 14.97], [75.32, 15.32], [74.97, 15.47], [74.75, 16.0], [74.85, 16.25], [74.75, 16.5], [74.97, 17.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.2233951563562755}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7069018026290805}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.368673645249373, 24.12525343215168, 24.28542181901372]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.66370123448769, 23.260909946196705, 23.62605947817258]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6123669216245944, -1.8408948874066282, -1.667443598856019]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7677558212786266, -2.1600592876736187, -2.2233951563562755]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.429317942078848, -1.636995851853245, -1.4970549247760694]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.749679091444461, -2.1146828310791923, -1.9448626161770544]}}