{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:02:48.989886", "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-29_to_2025-Jan-01_118.5_38.5"}, "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": 2024120002366}, "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 29 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 01 2025"}, "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": 52328.29168311537}, "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": ["Bohai 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": 38.5}, "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": 118.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "118.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 118.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 122.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[119.0, 39.25], [119.25, 39.15], [119.38, 39.2], [119.25, 39.5], [119.47, 40.03], [119.82, 40.18], [119.88, 40.3], [119.75, 40.35], [119.5, 40.25], [118.97, 40.47], [118.75, 41.0], [118.97, 41.53], [119.5, 41.75], [119.75, 41.65], [120.0, 41.75], [120.25, 41.65], [120.32, 41.68], [120.47, 42.03], [121.0, 42.25], [121.53, 42.03], [121.75, 41.5], [121.65, 41.25], [121.75, 41.0], [121.65, 40.75], [121.68, 40.68], [121.75, 40.65], [122.0, 40.75], [122.53, 40.53], [122.75, 40.0], [122.53, 39.47], [122.18, 39.32], [122.03, 38.97], [121.68, 38.82], [121.65, 38.75], [121.75, 38.5], [121.53, 37.97], [121.0, 37.75], [120.75, 37.85], [120.5, 37.75], [120.25, 37.85], [120.0, 37.75], [119.75, 37.85], [119.5, 37.75], [119.25, 37.85], [119.0, 37.75], [118.75, 37.85], [118.5, 37.75], [117.97, 37.97], [117.75, 38.5], [117.97, 39.03], [118.5, 39.25], [118.75, 39.15], [119.0, 39.25]]]]}}, "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": {"2024-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.5, 37.75], [117.97, 37.97], [117.75, 38.5], [117.97, 39.03], [118.5, 39.25], [118.75, 39.15], [119.0, 39.25], [119.25, 39.15], [119.38, 39.2], [119.25, 39.5], [119.47, 40.03], [119.82, 40.18], [119.88, 40.3], [119.75, 40.35], [119.5, 40.25], [118.97, 40.47], [118.75, 41.0], [118.97, 41.53], [119.5, 41.75], [119.75, 41.65], [120.0, 41.75], [120.25, 41.65], [120.32, 41.68], [120.47, 42.03], [121.0, 42.25], [121.53, 42.03], [121.75, 41.5], [121.65, 41.25], [121.75, 41.0], [121.65, 40.75], [121.68, 40.68], [121.75, 40.65], [122.0, 40.75], [122.53, 40.53], [122.75, 40.0], [122.53, 39.47], [122.18, 39.32], [122.03, 38.97], [121.68, 38.82], [121.65, 38.75], [121.75, 38.5], [121.53, 37.97], [121.0, 37.75], [120.75, 37.85], [120.5, 37.75], [120.25, 37.85], [120.0, 37.75], [119.75, 37.85], [119.5, 37.75], [119.25, 37.85], [119.0, 37.75], [118.75, 37.85], [118.5, 37.75]]]]}, 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2.9709427399766923]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.575665721986468, 5.976489475929895, 6.402865931407462, 2.9709427399766923]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5141752114755846, 1.4094268949257451, 1.371057078179061, 1.2232438747892505]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7440025260075382, 1.630994884359639, 1.6831187440607809, 1.2232438747892505]}}