{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:48.302050", "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": "2020-Dec-26_to_2020-Dec-28_123.5_35.5"}, "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": 2020120002739}, "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 26 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 28 2020"}, "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": 121620.92757446467}, "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"]}, "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", "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": 35.5}, "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": 123.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "123.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 120.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 125.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 37.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 34.47], [119.75, 35.0], [119.97, 35.53], [120.5, 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34.25], [119.97, 34.47]], [[121.75, 36.15], [121.82, 36.18], [121.88, 36.3], [121.75, 36.35], [121.5, 36.25], [121.75, 36.15]]]]}, "2020-12-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[119.97, 34.47], [119.75, 35.0], [119.97, 35.53], [120.5, 35.75], [120.75, 35.65], [120.82, 35.68], [120.97, 36.03], [121.5, 36.25], [120.97, 36.47], [120.75, 37.0], [120.97, 37.53], [121.5, 37.75], [121.75, 37.65], [122.0, 37.75], [122.25, 37.65], [122.5, 37.75], [123.03, 37.53], [123.18, 37.18], [123.25, 37.15], [123.5, 37.25], [123.75, 37.15], [124.0, 37.25], [124.53, 37.03], [124.68, 36.68], [124.75, 36.65], [125.0, 36.75], [125.53, 36.53], [125.75, 36.0], [125.65, 35.75], [125.75, 35.5], [125.53, 34.97], [125.18, 34.82], [125.03, 34.47], [124.68, 34.32], [124.65, 34.25], [124.75, 34.0], [124.53, 33.47], [124.0, 33.25], [123.75, 33.35], [123.68, 33.32], [123.65, 33.25], [123.75, 33.0], [123.65, 32.75], [123.75, 32.5], [123.65, 32.25], [123.75, 32.0], [123.53, 31.47], [123.0, 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"description": "The daily evolution of mean t2m.", "value": [10.289476931806064, 10.592071781955212, 10.34004930466051]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.66568727758198, 12.597273083502671, 13.709053601864412]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.519795385417873, 4.929516263592309, 4.792540590015176]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.342518499034668, 6.044353188804337, 5.560244083024145]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7310908914746619, 1.8997984962995622, 1.8501698187036313]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.227084704254723, 2.2478537607949955, 2.181395534956146]}}