{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:48.997514", "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": "2023-Oct-23_to_2023-Oct-25_109.0_26.5"}, "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": 2023100001996}, "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": "October 23 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2023"}, "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": 57783.77160226312}, "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": 26.5}, "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": 109.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 108.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 112.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 25.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 28.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[108.0, 27.75], [108.25, 27.65], [108.5, 27.75], [108.75, 27.65], [108.82, 27.68], [108.97, 28.03], [109.5, 28.25], [109.75, 28.15], [109.82, 28.18], [109.97, 28.53], [110.5, 28.75], [110.75, 28.65], [111.0, 28.75], [111.25, 28.65], [111.5, 28.75], [111.75, 28.65], [112.0, 28.75], [112.25, 28.65], [112.5, 28.75], [113.03, 28.53], [113.25, 28.0], [113.15, 27.75], [113.25, 27.5], [113.03, 26.97], [112.5, 26.75], [112.0, 26.96], [111.5, 26.75], [111.25, 26.85], [111.0, 26.75], [110.5, 26.96], [110.18, 26.82], [110.15, 26.75], [110.25, 26.5], [110.03, 25.97], [109.68, 25.82], [109.53, 25.47], [109.0, 25.25], [108.75, 25.35], [108.68, 25.32], [108.53, 24.97], [108.0, 24.75], [107.47, 24.97], [107.25, 25.5], [107.46, 26.0], [107.25, 26.5], [107.35, 26.75], [107.25, 27.0], [107.47, 27.53], [108.0, 27.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.25, 27.0], [107.47, 27.53], [108.0, 27.75], [108.25, 27.65], [108.5, 27.75], [108.75, 27.65], [108.82, 27.68], [108.97, 28.03], [109.5, 28.25], [109.75, 28.15], [109.82, 28.18], [109.97, 28.53], [110.5, 28.75], [110.75, 28.65], [111.0, 28.75], [111.25, 28.65], [111.5, 28.75], [111.75, 28.65], [112.0, 28.75], [112.25, 28.65], [112.5, 28.75], [113.03, 28.53], [113.25, 28.0], [113.15, 27.75], [113.25, 27.5], [113.03, 26.97], [112.5, 26.75], [112.0, 26.96], [111.5, 26.75], [111.25, 26.85], [111.0, 26.75], [110.5, 26.96], [110.18, 26.82], [110.15, 26.75], [110.25, 26.5], [110.03, 25.97], [109.68, 25.82], [109.53, 25.47], [109.0, 25.25], [108.75, 25.35], [108.68, 25.32], [108.53, 24.97], [108.0, 24.75], [107.47, 24.97], [107.25, 25.5], [107.46, 26.0], [107.25, 26.5], [107.35, 26.75], [107.25, 27.0]]]]}, "2023-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.25, 27.0], [107.47, 27.53], [108.0, 27.75], [108.25, 27.65], [108.5, 27.75], [108.75, 27.65], [108.82, 27.68], [108.97, 28.03], [109.5, 28.25], [109.75, 28.15], [109.82, 28.18], [109.97, 28.53], [110.5, 28.75], [110.75, 28.65], [111.0, 28.75], [111.25, 28.65], [111.5, 28.75], [111.75, 28.65], [112.0, 28.75], [112.25, 28.65], [112.5, 28.75], [113.03, 28.53], [113.25, 28.0], [113.15, 27.75], [113.25, 27.5], [113.03, 26.97], [112.5, 26.75], [112.0, 26.96], [111.5, 26.75], [111.25, 26.85], [111.0, 26.75], [110.5, 26.96], [110.18, 26.82], [110.15, 26.75], [110.25, 26.5], [110.03, 25.97], [109.68, 25.82], [109.53, 25.47], [109.0, 25.25], [108.75, 25.35], [108.68, 25.32], [108.53, 24.97], [108.0, 24.75], [107.47, 24.97], [107.25, 25.5], [107.46, 26.0], [107.25, 26.5], [107.35, 26.75], [107.25, 27.0]]]]}, "2023-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[107.25, 27.0], [107.47, 27.53], [108.0, 27.75], [108.25, 27.65], [108.5, 27.75], [108.75, 27.65], [108.82, 27.68], [108.97, 28.03], [109.5, 28.25], [109.75, 28.15], [109.82, 28.18], [109.97, 28.53], [110.5, 28.75], [110.75, 28.65], [111.0, 28.75], [111.25, 28.65], [111.5, 28.75], [111.75, 28.65], [112.0, 28.75], [112.25, 28.65], [112.5, 28.75], [113.03, 28.53], [113.25, 28.0], [113.15, 27.75], [113.25, 27.5], [113.03, 26.97], [112.5, 26.75], [112.0, 26.96], [111.5, 26.75], [111.25, 26.85], [111.0, 26.75], [110.5, 26.96], [110.18, 26.82], [110.15, 26.75], [110.25, 26.5], [110.03, 25.97], [109.68, 25.82], [109.53, 25.47], [109.0, 25.25], [108.75, 25.35], [108.68, 25.32], [108.53, 24.97], [108.0, 24.75], [107.47, 24.97], [107.25, 25.5], [107.46, 26.0], [107.25, 26.5], [107.35, 26.75], [107.25, 27.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.675193432274739}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.529621753012487}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.435030827795288, 22.8933808194829, 21.99238437456927]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.168471782495487, 25.352421908691724, 24.20338592722362]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.643330602426, 6.3486684435716745, 5.596866213039786]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.922686185491102, 7.675193432274739, 7.514780357350276]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6184602716519687, 2.160593291423802, 1.8904839722366782]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9795513207114914, 2.6674289934441324, 2.3804717889074047]}}