{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:13.757913", "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-Jan-11_to_2024-Jan-14_124.5_34.0"}, "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": 2024010001493}, "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": "January 11 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 14 2024"}, "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": 103910.40710449082}, "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": ["East China Sea", "Yellow 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": 34.0}, "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": 124.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "124.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.0}, "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": 36.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[123.75, 33.35], [123.5, 33.25], [122.97, 33.47], [122.82, 33.82], [122.75, 33.85], [122.5, 33.75], [122.25, 33.85], 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{"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": {"2024-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.25, 35.5], [119.35, 35.75], [119.25, 36.0], [119.47, 36.53], [120.0, 36.75], [120.25, 36.65], [120.5, 36.75], [120.75, 36.65], [121.0, 36.75], [121.53, 36.53], [121.68, 36.18], [121.75, 36.15], [121.88, 36.2], [121.75, 36.5], [121.97, 37.03], [122.5, 37.25], [122.75, 37.15], [123.0, 37.25], [123.53, 37.03], [123.68, 36.68], [124.03, 36.53], [124.25, 36.0], [124.15, 35.75], [124.18, 35.68], [124.25, 35.65], [124.5, 35.75], [125.03, 35.53], [125.25, 35.0], [125.15, 34.75], [125.18, 34.68], [125.53, 34.53], [125.75, 34.0], [125.53, 33.47], [125.0, 33.25], [124.75, 33.35], [124.5, 33.25], [124.25, 33.35], [124.0, 33.25], [123.75, 33.35], [123.5, 33.25], [122.97, 33.47], [122.82, 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[124.5, 31.75], [123.97, 31.97], [123.75, 32.5], [123.85, 32.75], [123.75, 33.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.612580990001902}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 3.98297767130969}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.3402600400962115, 7.96409862410934, 9.047825554715985, 10.15735700457492]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.565898802604409, 11.186034533120107, 11.103470771801994, 10.786987660422483]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.395207042039435, 3.7463577833332766, 4.835853294908962, 3.39648235838672]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.808805391967951, 4.287248911246763, 5.612580990001902, 3.6626447712914114]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4442937647001388, 1.5621514988283571, 2.004002611125424, 1.4795480786049986]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.728860201620834, 1.833756570379299, 2.3725128458463267, 1.5547812018107792]}}