{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:09.749107", "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": "2012-Apr-13_to_2012-Apr-15_78.5_28.0"}, "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": 2012040000801}, "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": "April 13 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 15 2012"}, "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": 150394.13442665729}, "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", "Tibetan-Plateau"]}, "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": 28.0}, "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": 78.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "78.5\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": 80.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 30.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.25, 26.5], [74.47, 27.03], [75.0, 27.25], [75.25, 27.15], 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[74.82, 25.82], [74.47, 25.97], [74.25, 26.5]]]]}, "2012-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.25, 26.5], [74.47, 27.03], [75.0, 27.25], [75.25, 27.15], [75.5, 27.25], [75.75, 27.15], [75.82, 27.18], [75.97, 27.53], [76.32, 27.68], [76.35, 27.75], [76.32, 27.82], [76.25, 27.85], [76.0, 27.75], [75.47, 27.97], [75.25, 28.5], [75.46, 29.0], [75.25, 29.5], [75.47, 30.03], [76.0, 30.25], [76.25, 30.15], [76.5, 30.25], [76.75, 30.15], [76.82, 30.18], [76.97, 30.53], [77.5, 30.75], [78.03, 30.53], [78.18, 30.18], [78.25, 30.15], [78.5, 30.25], [78.75, 30.15], [79.0, 30.25], [79.53, 30.03], [79.75, 29.5], [79.65, 29.25], [79.68, 29.18], [80.03, 29.03], [80.25, 28.5], [80.15, 28.25], [80.18, 28.18], [80.25, 28.15], [80.5, 28.25], [81.03, 28.03], [81.25, 27.5], [81.03, 26.97], [80.68, 26.82], [80.53, 26.47], [80.0, 26.25], [79.75, 26.35], [79.5, 26.25], [79.25, 26.35], [79.0, 26.25], [78.75, 26.35], [78.68, 26.32], [78.65, 26.25], [78.75, 26.0], [78.53, 25.47], [78.0, 25.25], [77.75, 25.35], [77.5, 25.25], [77.25, 25.35], [77.0, 25.25], [76.75, 25.35], [76.5, 25.25], [76.25, 25.35], [76.0, 25.25], [75.75, 25.35], [75.5, 25.25], [74.97, 25.47], [74.82, 25.82], [74.47, 25.97], [74.25, 26.5]]]]}, "2012-04-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[74.25, 26.5], [74.47, 27.03], [75.0, 27.25], [75.25, 27.15], [75.5, 27.25], [75.75, 27.15], [75.82, 27.18], [75.97, 27.53], [76.32, 27.68], [76.35, 27.75], [76.32, 27.82], [76.25, 27.85], [76.0, 27.75], [75.47, 27.97], [75.25, 28.5], [75.46, 29.0], [75.25, 29.5], [75.47, 30.03], [76.0, 30.25], [76.25, 30.15], [76.5, 30.25], [76.75, 30.15], [76.82, 30.18], [76.97, 30.53], [77.5, 30.75], [78.03, 30.53], [78.18, 30.18], [78.25, 30.15], [78.5, 30.25], [78.75, 30.15], [79.0, 30.25], [79.53, 30.03], [79.75, 29.5], [79.65, 29.25], [79.68, 29.18], [80.03, 29.03], [80.25, 28.5], [80.15, 28.25], [80.18, 28.18], [80.25, 28.15], [80.5, 28.25], [81.03, 28.03], [81.25, 27.5], [81.03, 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"value": [19.906713888748527, 21.594456670511818, 20.95860199892121]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8015579802105592, -5.059463156511688, -4.326265940924529]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.260857506814546, -6.8617663317072015, -4.870584732764257]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6085675938923096, -2.0334252326098885, -1.7161423152255282]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3444155764845815, -2.5879712297345394, -2.0135320029762642]}}