{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:39.823920", "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": "2024-Dec-15_to_2024-Dec-17_86.0_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": 2024120001673}, "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 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2024"}, "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": 71088.14173996708}, "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"]}, "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": 86.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "86.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 83.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 87.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[83.38, 35.2], [83.25, 35.5], [83.47, 36.03], [83.82, 36.18], [83.97, 36.53], [84.5, 36.75], [84.75, 36.65], [85.0, 36.75], [85.25, 36.65], [85.5, 36.75], [85.75, 36.65], [86.0, 36.75], [86.25, 36.65], [86.5, 36.75], [87.03, 36.53], [87.18, 36.18], [87.53, 36.03], [87.75, 35.5], [87.53, 34.97], [87.13, 34.8], [87.25, 34.5], [87.03, 33.97], [86.5, 33.75], [86.25, 33.85], [86.18, 33.82], [86.15, 33.75], [86.25, 33.5], [86.03, 32.97], [85.68, 32.82], [85.65, 32.75], [85.75, 32.5], [85.53, 31.97], [85.0, 31.75], [84.47, 31.97], [84.32, 32.32], [83.97, 32.47], [83.75, 33.0], [83.93, 33.43], [83.5, 33.25], [82.97, 33.47], [82.75, 34.0], [82.85, 34.25], [82.75, 34.5], [82.97, 35.03], [83.38, 35.2]], [[84.32, 33.82], [84.25, 33.85], [84.18, 33.82], [84.07, 33.57], [84.38, 33.7], [84.32, 33.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Tibetan-Plateau"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.75, 34.5], [82.97, 35.03], [83.38, 35.2], [83.25, 35.5], [83.47, 36.03], [83.82, 36.18], [83.97, 36.53], [84.5, 36.75], [84.75, 36.65], [85.0, 36.75], [85.25, 36.65], [85.5, 36.75], [85.75, 36.65], [86.0, 36.75], [86.25, 36.65], [86.5, 36.75], [87.03, 36.53], [87.18, 36.18], [87.53, 36.03], [87.75, 35.5], [87.53, 34.97], [87.13, 34.8], [87.25, 34.5], [87.03, 33.97], [86.5, 33.75], [86.25, 33.85], [86.18, 33.82], [86.15, 33.75], [86.25, 33.5], [86.03, 32.97], [85.68, 32.82], [85.65, 32.75], [85.75, 32.5], [85.53, 31.97], [85.0, 31.75], [84.47, 31.97], [84.32, 32.32], [83.97, 32.47], [83.75, 33.0], [83.93, 33.43], [83.5, 33.25], [82.97, 33.47], [82.75, 34.0], [82.85, 34.25], [82.75, 34.5]], [[84.07, 33.57], [84.38, 33.7], [84.32, 33.82], [84.25, 33.85], [84.18, 33.82], [84.07, 33.57]]]]}, "2024-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.75, 34.5], [82.97, 35.03], [83.38, 35.2], [83.25, 35.5], [83.47, 36.03], [83.82, 36.18], [83.97, 36.53], [84.5, 36.75], [84.75, 36.65], [85.0, 36.75], [85.25, 36.65], [85.5, 36.75], [85.75, 36.65], [86.0, 36.75], [86.25, 36.65], [86.5, 36.75], [87.03, 36.53], [87.18, 36.18], [87.53, 36.03], [87.75, 35.5], [87.53, 34.97], [87.13, 34.8], [87.25, 34.5], [87.03, 33.97], [86.5, 33.75], [86.25, 33.85], [86.18, 33.82], [86.15, 33.75], [86.25, 33.5], [86.03, 32.97], [85.68, 32.82], [85.65, 32.75], [85.75, 32.5], [85.53, 31.97], [85.0, 31.75], [84.47, 31.97], [84.32, 32.32], [83.97, 32.47], [83.75, 33.0], [83.93, 33.43], [83.5, 33.25], [82.97, 33.47], [82.75, 34.0], [82.85, 34.25], [82.75, 34.5]], [[84.07, 33.57], [84.38, 33.7], [84.32, 33.82], [84.25, 33.85], [84.18, 33.82], [84.07, 33.57]]]]}, "2024-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[82.75, 34.5], [82.97, 35.03], [83.38, 35.2], [83.25, 35.5], [83.47, 36.03], [83.82, 36.18], [83.97, 36.53], [84.5, 36.75], [84.75, 36.65], [85.0, 36.75], [85.25, 36.65], [85.5, 36.75], [85.75, 36.65], [86.0, 36.75], [86.25, 36.65], [86.5, 36.75], [87.03, 36.53], [87.18, 36.18], [87.53, 36.03], [87.75, 35.5], [87.53, 34.97], [87.13, 34.8], [87.25, 34.5], [87.03, 33.97], [86.5, 33.75], [86.25, 33.85], [86.18, 33.82], [86.15, 33.75], [86.25, 33.5], [86.03, 32.97], [85.68, 32.82], [85.65, 32.75], [85.75, 32.5], [85.53, 31.97], [85.0, 31.75], [84.47, 31.97], [84.32, 32.32], [83.97, 32.47], [83.75, 33.0], [83.93, 33.43], [83.5, 33.25], [82.97, 33.47], [82.75, 34.0], [82.85, 34.25], [82.75, 34.5]], [[84.07, 33.57], [84.38, 33.7], [84.32, 33.82], [84.25, 33.85], [84.18, 33.82], [84.07, 33.57]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.100884816381864}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.946838748572548}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-11.762723373231381, -9.242498052687836, -11.432232897622214]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-8.111835225423135, -6.395661417643225, -8.146988932291663]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.92585972598861, 7.530044579990454, 5.384611939738582]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.037590954144662, 9.100884816381864, 6.871684841991197]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4064619407855055, 2.1023413731413467, 1.5140446590774632]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8071174871136566, 2.4708939043211924, 1.8619758297910778]}}