{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:06.070333", "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": "2011-Aug-05_to_2011-Aug-09_92.5_28.5"}, "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": 2011080000347}, "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": "August 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 09 2011"}, "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": 56836.47611944449}, "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": ["China", "India"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["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": 28.5}, "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": 92.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "92.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 91.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 94.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "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": {"2011-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.97, 29.03], [92.5, 29.25], [92.75, 29.15], [93.0, 29.25], [93.53, 29.03], [93.75, 28.5], [93.53, 27.97], [93.18, 27.82], [93.03, 27.47], [92.5, 27.25], [91.97, 27.47], [91.75, 28.0], [91.85, 28.25], [91.75, 28.5], [91.97, 29.03]]]]}, "2011-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 29.53], [91.32, 29.68], [91.47, 30.03], [92.0, 30.25], [92.25, 30.15], [92.32, 30.18], [92.47, 30.53], [93.0, 30.75], [93.53, 30.53], [93.68, 30.18], [93.75, 30.15], [94.0, 30.25], [94.53, 30.03], [94.75, 29.5], [94.65, 29.25], [94.75, 29.0], [94.65, 28.75], [94.75, 28.5], [94.53, 27.97], [94.0, 27.75], [93.75, 27.85], [93.68, 27.82], [93.53, 27.47], [93.0, 27.25], [92.75, 27.35], [92.5, 27.25], [92.25, 27.35], [92.0, 27.25], [91.47, 27.47], [91.32, 27.82], [90.97, 27.97], [90.75, 28.5], [90.85, 28.75], [90.75, 29.0], [90.97, 29.53]]]]}, "2011-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 29.53], [91.32, 29.68], [91.47, 30.03], [92.0, 30.25], [92.25, 30.15], [92.32, 30.18], [92.47, 30.53], [93.0, 30.75], [93.53, 30.53], [93.68, 30.18], [93.75, 30.15], [94.0, 30.25], [94.53, 30.03], [94.75, 29.5], [94.65, 29.25], [94.75, 29.0], [94.65, 28.75], [94.75, 28.5], [94.53, 27.97], [94.0, 27.75], [93.75, 27.85], [93.68, 27.82], [93.53, 27.47], [93.0, 27.25], [92.75, 27.35], [92.5, 27.25], [92.25, 27.35], [92.0, 27.25], [91.47, 27.47], [91.32, 27.82], [90.97, 27.97], [90.75, 28.5], [90.85, 28.75], [90.75, 29.0], [90.97, 29.53]]]]}, "2011-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[90.97, 29.53], [91.32, 29.68], [91.47, 30.03], [92.0, 30.25], [92.25, 30.15], [92.32, 30.18], [92.47, 30.53], [93.0, 30.75], [93.53, 30.53], [93.68, 30.18], [93.75, 30.15], [94.0, 30.25], [94.53, 30.03], [94.75, 29.5], [94.65, 29.25], [94.75, 29.0], [94.65, 28.75], [94.75, 28.5], [94.53, 27.97], [94.0, 27.75], [93.75, 27.85], [93.68, 27.82], [93.53, 27.47], [93.0, 27.25], [92.75, 27.35], [92.5, 27.25], [92.25, 27.35], [92.0, 27.25], [91.47, 27.47], [91.32, 27.82], [90.97, 27.97], [90.75, 28.5], [90.85, 28.75], [90.75, 29.0], [90.97, 29.53]]]]}, "2011-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[91.85, 28.75], [91.75, 29.0], [91.97, 29.53], [92.5, 29.75], [92.8, 29.63], [92.97, 30.03], [93.5, 30.25], [94.03, 30.03], [94.18, 29.68], [94.53, 29.53], [94.75, 29.0], [94.53, 28.47], [94.0, 28.25], [93.75, 28.35], [93.68, 28.32], [93.53, 27.97], [93.18, 27.82], [93.03, 27.47], [92.5, 27.25], [91.97, 27.47], [91.75, 28.0], [91.85, 28.25], [91.75, 28.5], [91.85, 28.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.951180600701491}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0621750894884814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.978883079134107, 6.446467741087929, 7.085060793401055, 7.348684554565921, 6.87625535630616]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.3550420354363837, 1.0001195375735392, 0.43382061670320127, 0.6273342434001279, 1.5907182984698238]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1110904102848926, -2.6272066891047907, -1.9999150345410341, -1.7235444834978357, -1.5487885645410822]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.160128579098057, -3.951180600701491, -3.1657019615560102, -2.9886267059775946, -2.0292431686780787]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7578356559617696, -2.3296542831928724, -1.7922142832255357, -1.5926060883738784, -1.404111446693632]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.870819986314982, -3.3478179746498014, -2.6026303544624314, -2.341286634858699, -1.5966864692017477]}}