{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:32:17.646012", "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-08_to_2022-Sep-11_79.0_17.0"}, "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": 2022090000390}, "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 08 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 11 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 68140.6070846298}, "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": 17.0}, "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": 79.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "79.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 78.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 82.25}, "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": 17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 16.75], [78.25, 17.0], [78.47, 17.53], [79.0, 17.75], [79.25, 17.65], [79.32, 17.68], [79.47, 18.03], [80.0, 18.25], [80.53, 18.03], [80.68, 17.68], [80.75, 17.65], [81.0, 17.75], [81.25, 17.65], [81.5, 17.75], [82.03, 17.53], [82.18, 17.18], [82.53, 17.03], [82.75, 16.5], [82.53, 15.97], [82.0, 15.75], [81.75, 15.85], [81.68, 15.82], [81.53, 15.47], [81.0, 15.25], [80.75, 15.35], [80.68, 15.32], [80.53, 14.97], [80.0, 14.75], [79.75, 14.85], [79.5, 14.75], [78.97, 14.97], [78.82, 15.32], [78.47, 15.47], [78.25, 16.0], [78.35, 16.25], [78.25, 16.5], [78.35, 16.75]]]]}, "2022-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 16.75], [78.25, 17.0], [78.35, 17.25], [78.25, 17.5], [78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.68, 17.68], [80.75, 17.65], [81.0, 17.75], [81.25, 17.65], [81.5, 17.75], [82.03, 17.53], [82.18, 17.18], [82.53, 17.03], [82.75, 16.5], [82.53, 15.97], [82.0, 15.75], [81.75, 15.85], [81.68, 15.82], [81.53, 15.47], [81.0, 15.25], [80.75, 15.35], [80.68, 15.32], [80.53, 14.97], [80.0, 14.75], [79.75, 14.85], [79.5, 14.75], [78.97, 14.97], [78.82, 15.32], [78.47, 15.47], [78.25, 16.0], [78.35, 16.25], [78.25, 16.5], [78.35, 16.75]]]]}, "2022-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 16.75], [78.25, 17.0], [78.35, 17.25], [78.25, 17.5], [78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.68, 17.68], [80.75, 17.65], [81.0, 17.75], [81.25, 17.65], [81.5, 17.75], [82.03, 17.53], [82.18, 17.18], [82.53, 17.03], [82.75, 16.5], [82.53, 15.97], [82.0, 15.75], [81.75, 15.85], [81.68, 15.82], [81.53, 15.47], [81.0, 15.25], [80.75, 15.35], [80.68, 15.32], [80.53, 14.97], [80.0, 14.75], [79.75, 14.85], [79.5, 14.75], [78.97, 14.97], [78.82, 15.32], [78.47, 15.47], [78.25, 16.0], [78.35, 16.25], [78.25, 16.5], [78.35, 16.75]]]]}, "2022-09-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[78.35, 17.25], [78.25, 17.5], [78.47, 18.03], [79.0, 18.25], [79.25, 18.15], [79.5, 18.25], [79.75, 18.15], [80.0, 18.25], [80.53, 18.03], [80.75, 17.5], [80.53, 16.97], [80.18, 16.82], [80.15, 16.75], [80.25, 16.5], [80.03, 15.97], [79.5, 15.75], [79.25, 15.85], [79.0, 15.75], [78.47, 15.97], [78.25, 16.5], [78.35, 16.75], [78.25, 17.0], [78.35, 17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.5881963316138012}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3287298154946097}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.268447782494093, 26.54189152632165, 26.02138942843561, 25.861282258498875]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.025094756071894, 24.964260658752153, 24.264662897131245, 24.731306362077873]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.4377895565059826, -2.0594669072082232, -2.548743379245183, -2.1633698673638753]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5881963316138012, -2.647182644378688, -3.321865972013711, -2.5591618130969778]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0273626383375642, -1.7557587867442361, -2.1718961334809705, -1.9237408765148964]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.7280831535844645, -2.0075390901108556, -2.5629489494879794, -2.401334631816401]}}