{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:21.236656", "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-Nov-18_to_2023-Nov-21_121.0_46.5"}, "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": 2023110001684}, "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": "November 18 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 21 2023"}, "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": 51179.033148114555}, "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": 46.5}, "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": 121.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.0\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": 123.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 45.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 47.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[120.25, 47.0], [120.47, 47.53], [120.82, 47.68], [120.97, 48.03], [121.5, 48.25], [121.75, 48.15], [122.0, 48.25], [122.25, 48.15], [122.5, 48.25], [122.75, 48.15], [123.0, 48.25], [123.53, 48.03], [123.75, 47.5], [123.54, 47.0], [123.75, 46.5], [123.53, 45.97], [123.18, 45.82], [123.03, 45.47], [122.68, 45.32], [122.53, 44.97], [122.18, 44.82], [122.03, 44.47], [121.5, 44.25], [121.25, 44.35], [121.0, 44.25], [120.47, 44.47], [120.25, 45.0], [120.35, 45.25], [120.32, 45.32], [120.25, 45.35], [120.0, 45.25], [119.47, 45.47], [119.25, 46.0], [119.47, 46.53], [120.0, 46.75], [120.25, 46.65], [120.32, 46.68], [120.35, 46.75], [120.25, 47.0]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Siberia", "E.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.88, 45.8], [120.47, 45.97], [120.25, 46.5], [120.47, 47.03], [121.0, 47.25], [121.25, 47.15], [121.5, 47.25], [122.03, 47.03], [122.25, 46.5], [122.04, 46.0], [122.25, 45.5], [122.03, 44.97], [121.68, 44.82], [121.53, 44.47], [121.0, 44.25], [120.47, 44.47], [120.25, 45.0], [120.47, 45.53], [120.82, 45.68], [120.88, 45.8]]]]}, "2023-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, 45.25], [119.47, 45.47], [119.25, 46.0], [119.47, 46.53], [120.0, 46.75], [120.25, 46.65], [120.32, 46.68], [120.35, 46.75], [120.25, 47.0], [120.47, 47.53], [120.82, 47.68], [120.97, 48.03], [121.5, 48.25], [121.75, 48.15], [122.0, 48.25], [122.25, 48.15], [122.5, 48.25], [122.75, 48.15], [123.0, 48.25], [123.53, 48.03], [123.75, 47.5], [123.54, 47.0], [123.75, 46.5], [123.53, 45.97], [123.18, 45.82], [123.03, 45.47], [122.68, 45.32], [122.53, 44.97], [122.18, 44.82], [122.03, 44.47], [121.5, 44.25], [121.25, 44.35], [121.0, 44.25], [120.47, 44.47], [120.25, 45.0], [120.35, 45.25], [120.32, 45.32], [120.25, 45.35], [120.0, 45.25]]]]}, "2023-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, 45.25], [119.47, 45.47], [119.25, 46.0], [119.47, 46.53], [120.0, 46.75], [120.25, 46.65], [120.32, 46.68], [120.35, 46.75], [120.25, 47.0], [120.47, 47.53], [120.82, 47.68], [120.97, 48.03], [121.5, 48.25], [121.75, 48.15], [122.0, 48.25], [122.25, 48.15], [122.5, 48.25], [122.75, 48.15], [123.0, 48.25], [123.53, 48.03], [123.75, 47.5], [123.54, 47.0], [123.75, 46.5], [123.53, 45.97], [123.18, 45.82], [123.03, 45.47], [122.68, 45.32], [122.53, 44.97], [122.18, 44.82], [122.03, 44.47], [121.5, 44.25], [121.25, 44.35], [121.0, 44.25], [120.47, 44.47], [120.25, 45.0], [120.35, 45.25], [120.32, 45.32], [120.25, 45.35], [120.0, 45.25]]]]}, "2023-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.0, 45.25], [119.47, 45.47], [119.25, 46.0], [119.47, 46.53], [120.0, 46.75], [120.25, 46.65], [120.32, 46.68], [120.35, 46.75], [120.25, 47.0], [120.47, 47.53], [120.82, 47.68], [120.97, 48.03], [121.5, 48.25], [121.75, 48.15], [122.0, 48.25], [122.25, 48.15], [122.5, 48.25], [122.75, 48.15], [123.0, 48.25], [123.53, 48.03], [123.75, 47.5], [123.54, 47.0], [123.75, 46.5], [123.53, 45.97], [123.18, 45.82], [123.03, 45.47], [122.68, 45.32], [122.53, 44.97], [122.18, 44.82], [122.03, 44.47], [121.5, 44.25], [121.25, 44.35], [121.0, 44.25], [120.47, 44.47], [120.25, 45.0], [120.35, 45.25], [120.32, 45.32], [120.25, 45.35], [120.0, 45.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 12.797189178347253}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.093599520420673}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.8713347078473817, -1.1854465539436774, 2.1521074441665746, 0.7059235705739866]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.5868610589638479, 0.9530868587241912, 3.8531122577054475, 3.264870451130662]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.634647190866502, 7.187038206112462, 10.779783893656393, 9.72380184975219]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [7.101719957700141, 7.869798029356332, 12.797189178347253, 10.520279686416018]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3198357144345896, 1.346901802675202, 1.9744549514785854, 1.7935479377116426]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3383675647186075, 1.4218472021976094, 2.27130550199858, 1.946710056279728]}}