{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:52:02.795388", "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-Jun-02_to_2024-Jun-04_109.5_30.5"}, "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": 2024060000112}, "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": "June 02 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 123132.9771057194}, "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": []}, "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": 30.5}, "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": 109.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "109.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 104.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 110.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 27.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.82, 29.32], [104.47, 29.47], [104.25, 30.0], [104.47, 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29.32]], [[106.88, 29.3], [106.75, 29.35], [106.68, 29.32], [106.65, 29.25], [106.7, 29.13], [106.82, 29.18], [106.88, 29.3]]]]}, "2024-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[104.82, 29.32], [104.47, 29.47], [104.25, 30.0], [104.47, 30.53], [104.82, 30.68], [104.97, 31.03], [105.32, 31.18], [105.47, 31.53], [105.82, 31.68], [105.97, 32.03], [106.5, 32.25], [106.75, 32.15], [107.0, 32.25], [107.5, 32.04], [108.0, 32.25], [108.3, 32.13], [108.47, 32.53], [109.0, 32.75], [109.53, 32.53], [109.75, 32.0], [109.65, 31.75], [109.7, 31.63], [110.0, 31.75], [110.53, 31.53], [110.75, 31.0], [110.65, 30.75], [110.75, 30.5], [110.53, 29.97], [110.18, 29.82], [110.03, 29.47], [109.5, 29.25], [109.25, 29.35], [109.18, 29.32], [109.15, 29.25], [109.25, 29.0], [109.03, 28.47], [108.68, 28.32], [108.53, 27.97], [108.18, 27.82], [108.03, 27.47], [107.5, 27.25], [107.25, 27.35], [107.0, 27.25], [106.47, 27.47], [106.3, 27.88], [106.0, 27.75], [105.75, 27.85], [105.5, 27.75], [105.25, 27.85], [105.0, 27.75], [104.47, 27.97], [104.25, 28.5], [104.47, 29.03], [104.82, 29.18], [104.85, 29.25], [104.82, 29.32]], [[106.88, 29.3], [106.75, 29.35], [106.68, 29.32], [106.65, 29.25], [106.7, 29.13], [106.82, 29.18], [106.88, 29.3]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.303857155055141}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.169808365959529}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.41844659668118, 17.863491973395924, 17.67019154537695]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.395862821046705, 13.524098897372767, 12.249615841142656]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.638487776039589, -4.2981452194257335, -4.572792102413269]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.280549009844549, -4.950403706876386, -6.303857155055141]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5399698835490916, -1.8287500896290922, -1.966828826253048]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8191629152685458, -2.119187378689854, -2.8718631159367805]}}