{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:12:35.429488", "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": "2018-Apr-27_to_2018-Apr-30_117.0_35.5"}, "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": 2018040002701}, "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 27 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 58078.680808065794}, "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": 35.5}, "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": 117.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "117.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 114.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 118.75}, "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": 36.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[115.32, 36.18], [115.47, 36.53], [116.0, 36.75], [116.25, 36.65], [116.5, 36.75], [116.75, 36.65], [117.0, 36.75], [117.25, 36.65], [117.5, 36.75], [118.03, 36.53], [118.25, 36.0], [118.15, 35.75], [118.25, 35.5], [118.03, 34.97], [117.68, 34.82], [117.53, 34.47], [117.0, 34.25], [116.75, 34.35], [116.5, 34.25], [116.25, 34.35], [116.0, 34.25], [115.75, 34.35], [115.5, 34.25], [115.25, 34.35], [115.0, 34.25], [114.47, 34.47], [114.25, 35.0], [114.47, 35.53], [114.82, 35.68], [114.97, 36.03], [115.32, 36.18]]]]}, "2018-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.25, 35.0], [114.47, 35.53], [114.82, 35.68], [114.97, 36.03], [115.32, 36.18], [115.47, 36.53], [116.0, 36.75], [116.25, 36.65], [116.5, 36.75], [116.75, 36.65], [117.0, 36.75], [117.25, 36.65], [117.5, 36.75], [117.75, 36.65], [118.0, 36.75], [118.25, 36.65], [118.5, 36.75], [119.03, 36.53], [119.25, 36.0], [119.03, 35.47], [118.68, 35.32], [118.53, 34.97], [118.0, 34.75], [117.75, 34.85], [117.68, 34.82], [117.65, 34.75], [117.75, 34.5], [117.53, 33.97], [117.18, 33.82], [117.03, 33.47], [116.5, 33.25], [116.25, 33.35], [116.0, 33.25], [115.47, 33.47], [115.32, 33.82], [114.97, 33.97], [114.82, 34.32], [114.47, 34.47], [114.25, 35.0]]]]}, "2018-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.25, 35.0], [114.47, 35.53], [114.82, 35.68], [114.97, 36.03], [115.32, 36.18], [115.47, 36.53], [116.0, 36.75], [116.25, 36.65], [116.5, 36.75], [116.75, 36.65], [117.0, 36.75], [117.25, 36.65], [117.5, 36.75], [117.75, 36.65], [118.0, 36.75], [118.25, 36.65], [118.5, 36.75], [119.03, 36.53], [119.25, 36.0], [119.03, 35.47], [118.68, 35.32], [118.53, 34.97], [118.0, 34.75], [117.75, 34.85], [117.68, 34.82], [117.65, 34.75], [117.75, 34.5], [117.53, 33.97], [117.18, 33.82], [117.03, 33.47], [116.5, 33.25], [116.25, 33.35], [116.0, 33.25], [115.47, 33.47], [115.32, 33.82], [114.97, 33.97], [114.82, 34.32], [114.47, 34.47], [114.25, 35.0]]]]}, "2018-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[114.75, 34.5], [114.97, 35.03], [115.32, 35.18], [115.47, 35.53], [115.82, 35.68], [115.97, 36.03], [116.32, 36.18], [116.47, 36.53], [117.0, 36.75], [117.25, 36.65], [117.5, 36.75], [117.75, 36.65], [118.0, 36.75], [118.25, 36.65], [118.5, 36.75], [119.03, 36.53], [119.25, 36.0], [119.03, 35.47], [118.68, 35.32], [118.53, 34.97], [118.0, 34.75], [117.75, 34.85], [117.68, 34.82], [117.65, 34.75], [117.75, 34.5], [117.53, 33.97], [117.18, 33.82], [117.03, 33.47], [116.5, 33.25], [116.25, 33.35], [116.0, 33.25], [115.47, 33.47], [115.32, 33.82], [114.97, 33.97], [114.75, 34.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.113236999814262}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.043929366555703}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.476042881511432, 23.516843312301944, 23.81171143563165, 23.754860810056357]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.21690453780286, 24.614829311475944, 25.250951231357135, 24.842330701242815]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.5416087968267265, 5.273905411665393, 5.15336688628444, 4.998398542139338]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.909176033408585, 5.901097105100462, 6.113236999814262, 5.558009073922221]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4237452036355267, 1.642106983647551, 1.5947323978243984, 1.5359939149348756]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5463684878760366, 1.8025022346281256, 1.8489128006837847, 1.7598938331092207]}}