{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:04:30.552020", "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": "2015-Dec-20_to_2015-Dec-24_130.0_30.5"}, "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": 2015120002073}, "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": "December 20 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2015"}, "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": "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": 55716.28646050241}, "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": ["Japan"]}, "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": ["Eastern China Sea", "Philippine Sea"]}, "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": 30.5}, "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": 130.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "130.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-12-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.0, 31.75], [131.53, 31.53], [131.75, 31.0], [131.65, 30.75], [131.75, 30.5], [131.53, 29.97], [131.0, 29.75], [130.5, 29.96], [130.0, 29.75], [129.47, 29.97], [129.25, 30.5], [129.47, 31.03], [130.0, 31.25], [130.3, 31.13], [130.47, 31.53], [131.0, 31.75]]]]}, "2015-12-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.97, 31.53], [129.32, 31.68], [129.47, 32.03], [130.0, 32.25], [130.53, 32.03], [130.7, 31.63], [131.0, 31.75], [131.53, 31.53], [131.68, 31.18], [131.75, 31.15], [132.0, 31.25], [132.53, 31.03], [132.68, 30.68], [132.75, 30.65], [133.0, 30.75], [133.25, 30.65], [133.5, 30.75], [133.75, 30.65], [134.0, 30.75], [134.53, 30.53], [134.75, 30.0], [134.53, 29.47], [134.0, 29.25], [133.75, 29.35], [133.5, 29.25], [133.25, 29.35], [133.0, 29.25], [132.75, 29.35], [132.5, 29.25], [132.25, 29.35], [132.0, 29.25], [131.75, 29.35], [131.5, 29.25], [131.25, 29.35], [131.0, 29.25], [130.75, 29.35], [130.5, 29.25], [129.97, 29.47], [129.82, 29.82], [129.75, 29.85], [129.5, 29.75], [128.97, 29.97], [128.75, 30.5], [128.85, 30.75], [128.75, 31.0], [128.97, 31.53]]]]}, "2015-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.97, 31.53], [129.32, 31.68], [129.47, 32.03], [129.82, 32.18], [129.97, 32.53], [130.32, 32.68], [130.35, 32.75], [130.25, 33.0], [130.47, 33.53], [131.0, 33.75], [131.53, 33.53], [131.68, 33.18], [132.03, 33.03], [132.25, 32.5], [132.03, 31.97], [131.68, 31.82], [131.54, 31.5], [131.68, 31.18], [131.75, 31.15], [132.0, 31.25], [132.53, 31.03], [132.68, 30.68], [132.75, 30.65], [133.0, 30.75], [133.25, 30.65], [133.5, 30.75], [133.75, 30.65], [134.0, 30.75], [134.53, 30.53], [134.75, 30.0], [134.53, 29.47], [134.0, 29.25], [133.75, 29.35], [133.5, 29.25], [133.25, 29.35], [133.0, 29.25], [132.75, 29.35], [132.5, 29.25], [132.25, 29.35], [132.0, 29.25], [131.75, 29.35], [131.5, 29.25], [131.25, 29.35], [131.0, 29.25], [130.75, 29.35], [130.5, 29.25], [129.97, 29.47], [129.82, 29.82], [129.75, 29.85], [129.5, 29.75], [128.97, 29.97], [128.75, 30.5], [128.85, 30.75], [128.75, 31.0], [128.97, 31.53]]]]}, "2015-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.97, 31.53], [129.32, 31.68], [129.47, 32.03], [129.82, 32.18], [129.97, 32.53], [130.32, 32.68], [130.35, 32.75], [130.25, 33.0], [130.47, 33.53], [131.0, 33.75], [131.53, 33.53], [131.68, 33.18], [132.03, 33.03], [132.25, 32.5], [132.03, 31.97], [131.68, 31.82], [131.54, 31.5], [131.68, 31.18], [131.75, 31.15], [132.0, 31.25], [132.53, 31.03], [132.68, 30.68], [132.75, 30.65], [133.0, 30.75], [133.25, 30.65], [133.5, 30.75], [133.75, 30.65], [134.0, 30.75], [134.53, 30.53], [134.75, 30.0], [134.53, 29.47], [134.0, 29.25], [133.75, 29.35], [133.5, 29.25], [133.25, 29.35], [133.0, 29.25], [132.75, 29.35], [132.5, 29.25], [132.25, 29.35], [132.0, 29.25], [131.75, 29.35], [131.5, 29.25], [131.25, 29.35], [131.0, 29.25], [130.75, 29.35], [130.5, 29.25], [129.97, 29.47], [129.82, 29.82], [129.75, 29.85], [129.5, 29.75], [128.97, 29.97], [128.75, 30.5], [128.85, 30.75], [128.75, 31.0], [128.97, 31.53]]]]}, "2015-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, 33.0], [130.47, 33.53], [131.0, 33.75], [131.53, 33.53], [131.68, 33.18], [132.03, 33.03], [132.25, 32.5], [132.03, 31.97], [131.68, 31.82], [131.53, 31.47], [131.0, 31.25], [130.75, 31.35], [130.5, 31.25], [129.97, 31.47], [129.75, 32.0], [129.97, 32.53], [130.32, 32.68], [130.35, 32.75], [130.25, 33.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 6.825004864422112}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.541886466096796}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.232807535952873, 19.61223262983367, 17.782725668158434, 18.217727319468338, 11.468566265324228]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.966216541640904, 20.321563815229013, 20.608504102543975, 21.085244120558798, 12.99199907600132]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.524625790348675, 3.9679353098309527, 4.391800347334329, 4.9000345399094325, 5.51502636038565]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.680658330416861, 4.511953523480543, 5.726993340830973, 6.825004864422112, 5.770295817210524]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4828494119368534, 1.4579500399152798, 1.5289720166908625, 1.7095849002942924, 1.653185339704116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.633249177047124, 1.549507744780793, 1.8142774923101854, 1.8855727306154813, 1.8996643683436372]}}