{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:15.154062", "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": "2017-Jun-22_to_2017-Jun-24_114.5_38.5"}, "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": 2017060000701}, "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": "June 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 24 2017"}, "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": 60166.682284439215}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": 38.5}, "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": 114.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "114.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 111.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 115.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 36.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-06-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.75, 39.5], [110.97, 40.03], [111.5, 40.25], [111.75, 40.15], [111.82, 40.18], [111.97, 40.53], [112.32, 40.68], [112.47, 41.03], [113.0, 41.25], [113.53, 41.03], [113.68, 40.68], [114.03, 40.53], [114.2, 40.13], [114.5, 40.25], [114.75, 40.15], [115.0, 40.25], [115.53, 40.03], [115.75, 39.5], [115.65, 39.25], [115.75, 39.0], [115.65, 38.75], [115.75, 38.5], [115.54, 38.0], [115.75, 37.5], [115.53, 36.97], [115.0, 36.75], [114.75, 36.85], [114.68, 36.82], [114.53, 36.47], [114.0, 36.25], [113.47, 36.47], [113.32, 36.82], [112.97, 36.97], [112.8, 37.38], [112.5, 37.25], [111.97, 37.47], [111.82, 37.82], [111.47, 37.97], [111.25, 38.5], [111.35, 38.75], [111.32, 38.82], [110.97, 38.97], [110.75, 39.5]], [[112.85, 38.75], [112.82, 38.82], [112.75, 38.85], [112.68, 38.82], [112.65, 38.75], [112.68, 38.68], [112.8, 38.63], [112.85, 38.75]]]]}, "2017-06-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.75, 39.5], [110.97, 40.03], [111.5, 40.25], [111.75, 40.15], [111.82, 40.18], [111.97, 40.53], [112.32, 40.68], [112.47, 41.03], [113.0, 41.25], [113.53, 41.03], [113.68, 40.68], [114.03, 40.53], [114.2, 40.13], [114.5, 40.25], [114.75, 40.15], [115.0, 40.25], [115.53, 40.03], [115.75, 39.5], [115.65, 39.25], [115.75, 39.0], [115.65, 38.75], [115.75, 38.5], [115.54, 38.0], [115.75, 37.5], [115.53, 36.97], [115.0, 36.75], [114.75, 36.85], [114.68, 36.82], [114.53, 36.47], [114.0, 36.25], [113.47, 36.47], [113.32, 36.82], [112.97, 36.97], [112.8, 37.38], [112.5, 37.25], [111.97, 37.47], [111.82, 37.82], [111.47, 37.97], [111.25, 38.5], [111.35, 38.75], [111.32, 38.82], [110.97, 38.97], [110.75, 39.5]], [[112.85, 38.75], [112.82, 38.82], [112.75, 38.85], [112.68, 38.82], [112.65, 38.75], [112.68, 38.68], [112.8, 38.63], [112.85, 38.75]]]]}, "2017-06-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[110.75, 39.5], [110.97, 40.03], [111.5, 40.25], [111.75, 40.15], [111.82, 40.18], [111.97, 40.53], [112.32, 40.68], [112.47, 41.03], [113.0, 41.25], [113.53, 41.03], [113.68, 40.68], [114.03, 40.53], [114.2, 40.13], [114.5, 40.25], [114.75, 40.15], [115.0, 40.25], [115.53, 40.03], [115.75, 39.5], [115.65, 39.25], [115.75, 39.0], [115.65, 38.75], [115.75, 38.5], [115.54, 38.0], [115.75, 37.5], [115.53, 36.97], [115.0, 36.75], [114.75, 36.85], [114.68, 36.82], [114.53, 36.47], [114.0, 36.25], [113.47, 36.47], [113.32, 36.82], [112.97, 36.97], [112.8, 37.38], [112.5, 37.25], [111.97, 37.47], [111.82, 37.82], [111.47, 37.97], [111.25, 38.5], [111.35, 38.75], [111.32, 38.82], [110.97, 38.97], [110.75, 39.5]], [[112.85, 38.75], [112.82, 38.82], [112.75, 38.85], [112.68, 38.82], [112.65, 38.75], [112.68, 38.68], [112.8, 38.63], [112.85, 38.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.535993713827452}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.479362311455606}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.682015211220516, 17.38506685634792, 18.171520642069822]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.349526919328696, 12.968363072339514, 13.69138888315507]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.180358833935907, -4.490149100041733, -3.767579000389178]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.535993713827452, -5.422341415267738, -4.275152568023145]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.910535609978467, -1.666322960043052, -1.3998774841599329]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.4201348771145454, -1.9250451129178197, -1.5464628103302864]}}