{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:05:48.813518", "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": "2016-Jul-22_to_2016-Jul-24_82.5_34.5"}, "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": 2016070000762}, "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": "July 22 2016"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 24 2016"}, "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": 87972.21844903135}, "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": ["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": 34.5}, "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": 82.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "82.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 81.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 88.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 33.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2016-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.35, 34.75], [81.25, 35.0], [81.35, 35.25], [81.25, 35.5], [81.47, 36.03], [82.0, 36.25], [82.5, 36.04], [82.82, 36.18], [82.97, 36.53], [83.5, 36.75], [83.75, 36.65], [84.0, 36.75], [84.25, 36.65], [84.32, 36.68], [84.47, 37.03], [85.0, 37.25], [85.25, 37.15], [85.32, 37.18], [85.47, 37.53], [86.0, 37.75], [86.25, 37.65], [86.5, 37.75], [86.75, 37.65], [87.0, 37.75], [87.25, 37.65], [87.5, 37.75], [87.75, 37.65], [88.0, 37.75], [88.53, 37.53], [88.75, 37.0], [88.53, 36.47], [88.0, 36.25], [87.75, 36.35], [87.5, 36.25], [87.25, 36.35], [87.18, 36.32], [87.03, 35.97], [86.68, 35.82], [86.65, 35.75], [86.75, 35.5], [86.53, 34.97], [86.0, 34.75], [85.75, 34.85], [85.68, 34.82], [85.53, 34.47], [85.0, 34.25], [84.5, 34.46], [84.18, 34.32], [84.03, 33.97], [83.68, 33.82], [83.53, 33.47], [83.0, 33.25], [82.75, 33.35], [82.5, 33.25], [82.25, 33.35], [82.0, 33.25], [81.47, 33.47], [81.25, 34.0], [81.35, 34.25], [81.25, 34.5], [81.35, 34.75]]]]}, "2016-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.35, 34.75], [81.25, 35.0], [81.35, 35.25], [81.25, 35.5], [81.47, 36.03], [82.0, 36.25], [82.5, 36.04], [82.82, 36.18], [82.97, 36.53], [83.5, 36.75], [83.75, 36.65], [84.0, 36.75], [84.25, 36.65], [84.32, 36.68], [84.47, 37.03], [85.0, 37.25], [85.25, 37.15], [85.32, 37.18], [85.47, 37.53], [86.0, 37.75], [86.25, 37.65], [86.5, 37.75], [86.75, 37.65], [87.0, 37.75], [87.25, 37.65], [87.5, 37.75], [87.75, 37.65], [88.0, 37.75], [88.53, 37.53], [88.75, 37.0], [88.53, 36.47], [88.0, 36.25], [87.75, 36.35], [87.5, 36.25], [87.25, 36.35], [87.18, 36.32], [87.03, 35.97], [86.68, 35.82], [86.65, 35.75], [86.75, 35.5], [86.53, 34.97], [86.0, 34.75], [85.75, 34.85], [85.68, 34.82], [85.53, 34.47], [85.0, 34.25], [84.5, 34.46], [84.18, 34.32], [84.03, 33.97], [83.68, 33.82], [83.53, 33.47], [83.0, 33.25], [82.75, 33.35], [82.5, 33.25], [82.25, 33.35], [82.0, 33.25], [81.47, 33.47], [81.25, 34.0], [81.35, 34.25], [81.25, 34.5], [81.35, 34.75]]]]}, "2016-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[81.35, 34.75], [81.25, 35.0], [81.35, 35.25], [81.25, 35.5], [81.47, 36.03], [82.0, 36.25], [82.5, 36.04], [82.82, 36.18], [82.97, 36.53], [83.5, 36.75], [83.75, 36.65], [84.0, 36.75], [84.25, 36.65], [84.32, 36.68], [84.47, 37.03], [85.0, 37.25], [85.25, 37.15], [85.32, 37.18], [85.47, 37.53], [86.0, 37.75], [86.25, 37.65], [86.5, 37.75], [86.75, 37.65], [87.0, 37.75], [87.25, 37.65], [87.5, 37.75], [87.75, 37.65], [88.0, 37.75], [88.53, 37.53], [88.75, 37.0], [88.53, 36.47], [88.0, 36.25], [87.75, 36.35], [87.5, 36.25], [87.25, 36.35], [87.18, 36.32], [87.03, 35.97], [86.68, 35.82], [86.65, 35.75], [86.75, 35.5], [86.53, 34.97], [86.0, 34.75], [85.75, 34.85], [85.68, 34.82], [85.53, 34.47], [85.0, 34.25], [84.5, 34.46], [84.18, 34.32], [84.03, 33.97], [83.68, 33.82], [83.53, 33.47], [83.0, 33.25], [82.75, 33.35], [82.5, 33.25], [82.25, 33.35], [82.0, 33.25], [81.47, 33.47], [81.25, 34.0], [81.35, 34.25], [81.25, 34.5], [81.35, 34.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.67981237760182}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7481055158004644}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [0.10068961287066713, -0.9773020955458378, 0.35441828217301463]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-4.531844328809484, -5.192640337326168, -3.543072526483627]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.417388065250082, -4.542935669194827, -3.283992812956485]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.722662318035134, -5.67981237760182, -4.0671241794652815]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6358509709781708, -2.2042473548891186, -1.5589410825049077]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3315519482730407, -2.964371089339995, -2.007954081136298]}}