{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:17.469067", "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-Apr-12_to_2011-Apr-14_122.0_45.5"}, "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": 2011040002103}, "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 12 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2011"}, "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": "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": 52339.39598455767}, "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", "E.Siberia"]}, "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": 45.5}, "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": 122.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 43.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 46.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.75, 45.0], [119.97, 45.53], [120.32, 45.68], [120.47, 46.03], [121.0, 46.25], [121.25, 46.15], [121.32, 46.18], [121.47, 46.53], [122.0, 46.75], [122.25, 46.65], [122.5, 46.75], [123.0, 46.54], [123.5, 46.75], [123.75, 46.65], [124.0, 46.75], [124.25, 46.65], [124.5, 46.75], [125.03, 46.53], [125.25, 46.0], [125.03, 45.47], [124.5, 45.25], [124.25, 45.35], [124.18, 45.32], [124.03, 44.97], [123.68, 44.82], [123.53, 44.47], [123.18, 44.32], [123.03, 43.97], [122.68, 43.82], [122.53, 43.47], [122.0, 43.25], [121.75, 43.35], [121.5, 43.25], [121.25, 43.35], [121.0, 43.25], [120.47, 43.47], [120.25, 44.0], [120.35, 44.25], [120.32, 44.32], [119.97, 44.47], [119.75, 45.0]]]]}, "2011-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.75, 45.0], [119.97, 45.53], [120.32, 45.68], [120.47, 46.03], [121.0, 46.25], [121.25, 46.15], [121.32, 46.18], [121.47, 46.53], [122.0, 46.75], [122.25, 46.65], [122.5, 46.75], [123.0, 46.54], [123.5, 46.75], [123.75, 46.65], [124.0, 46.75], [124.25, 46.65], [124.5, 46.75], [125.03, 46.53], [125.25, 46.0], [125.03, 45.47], [124.5, 45.25], [124.25, 45.35], [124.18, 45.32], [124.03, 44.97], [123.68, 44.82], [123.53, 44.47], [123.18, 44.32], [123.03, 43.97], [122.68, 43.82], [122.53, 43.47], [122.0, 43.25], [121.75, 43.35], [121.5, 43.25], [121.25, 43.35], [121.0, 43.25], [120.47, 43.47], [120.25, 44.0], [120.35, 44.25], [120.32, 44.32], [119.97, 44.47], [119.75, 45.0]]]]}, "2011-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.75, 45.0], [119.97, 45.53], [120.32, 45.68], [120.47, 46.03], [121.0, 46.25], [121.25, 46.15], [121.32, 46.18], [121.47, 46.53], [122.0, 46.75], [122.25, 46.65], [122.5, 46.75], [123.0, 46.54], [123.5, 46.75], [123.75, 46.65], [124.0, 46.75], [124.25, 46.65], [124.5, 46.75], [125.03, 46.53], [125.25, 46.0], [125.03, 45.47], [124.5, 45.25], [124.25, 45.35], [124.18, 45.32], [124.03, 44.97], [123.68, 44.82], [123.53, 44.47], [123.18, 44.32], [123.03, 43.97], [122.68, 43.82], [122.53, 43.47], [122.0, 43.25], [121.75, 43.35], [121.5, 43.25], [121.25, 43.35], [121.0, 43.25], [120.47, 43.47], [120.25, 44.0], [120.35, 44.25], [120.32, 44.32], [119.97, 44.47], [119.75, 45.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.578361139924084}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.244525763142993}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.429405970307187, 15.80522059449612, 15.03700511258711]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.753584529226032, 17.46272246009613, 17.333781094901553]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.992169136285381, 7.92398252450284, 6.81742562864076]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.077759088890389, 9.578361139924084, 7.571958265151125]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6868607872176475, 1.8982434924449496, 1.6385401300670297]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9605234996526317, 2.3023934040619864, 1.741718810639281]}}