{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:27.786927", "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": "2021-Sep-15_to_2021-Sep-19_78.0_25.5"}, "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": 2021090000545}, "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 15 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 19 2021"}, "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": 108905.67480527684}, "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"]}, "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": 25.5}, "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": 78.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 76.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 81.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 24.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[75.97, 23.97], [75.75, 24.5], [75.97, 25.03], [76.32, 25.18], [76.35, 25.25], [76.25, 25.5], [76.35, 25.75], [76.25, 26.0], [76.47, 26.53], [76.82, 26.68], [76.97, 27.03], [77.5, 27.25], [78.03, 27.03], [78.18, 26.68], [78.25, 26.65], [78.5, 26.75], [78.75, 26.65], [78.82, 26.68], [78.97, 27.03], [79.5, 27.25], [79.75, 27.15], [80.0, 27.25], [80.25, 27.15], [80.5, 27.25], [81.03, 27.03], [81.18, 26.68], [81.53, 26.53], [81.75, 26.0], [81.65, 25.75], [81.75, 25.5], [81.53, 24.97], [81.18, 24.82], [81.15, 24.75], [81.25, 24.5], [81.03, 23.97], [80.5, 23.75], [80.25, 23.85], [80.0, 23.75], [79.75, 23.85], [79.5, 23.75], [79.25, 23.85], [79.0, 23.75], [78.75, 23.85], [78.5, 23.75], [78.25, 23.85], [78.0, 23.75], [77.75, 23.85], [77.5, 23.75], [77.25, 23.85], [77.0, 23.75], [76.75, 23.85], [76.5, 23.75], [75.97, 23.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-09-15T11:30:00.000000000": {"type": 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"anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.627934964288452, -3.1741235487657384, -3.109658763340821, -2.8556110173965243, -2.185898208120989]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3299878501157423, -4.474037141222141, -4.2965225783244705, -3.703903467618943, -2.185898208120989]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.875334010071, -2.2192728516313505, -2.143097537684005, -1.8690478493894427, -1.4844172631919768]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2680765028293663, -3.10041437519853, -2.8066699529308257, -2.1502999920231396, -1.4844172631919768]}}