{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:49.090137", "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-Oct-23_to_2023-Oct-25_122.5_47.0"}, "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": 2023100002007}, "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": "October 23 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 25 2023"}, "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": 78018.83851543118}, "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": 47.0}, "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": 122.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 49.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[120.75, 46.0], [120.85, 46.25], [120.75, 46.5], [120.97, 47.03], [121.32, 47.18], [121.35, 47.25], [121.25, 47.5], [121.47, 48.03], [121.82, 48.18], [121.85, 48.25], [121.75, 48.5], [121.85, 48.75], [121.75, 49.0], [121.97, 49.53], [122.32, 49.68], [122.47, 50.03], [123.0, 50.25], [123.25, 50.15], [123.5, 50.25], [124.03, 50.03], [124.25, 49.5], [124.15, 49.25], [124.25, 49.0], [124.04, 48.5], [124.18, 48.18], [124.53, 48.03], [124.75, 47.5], [124.65, 47.25], [124.75, 47.0], [124.53, 46.47], [124.18, 46.32], [124.15, 46.25], [124.25, 46.0], [124.03, 45.47], [123.5, 45.25], [123.25, 45.35], [123.18, 45.32], [123.15, 45.25], [123.25, 45.0], [123.03, 44.47], [122.68, 44.32], [122.53, 43.97], [122.0, 43.75], [121.47, 43.97], [121.32, 44.32], [120.97, 44.47], [120.75, 45.0], [120.85, 45.25], [120.75, 45.5], [120.85, 45.75], [120.75, 46.0]]]]}}, "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": {"2023-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, 45.5], [120.85, 45.75], [120.75, 46.0], [120.85, 46.25], [120.75, 46.5], [120.97, 47.03], [121.32, 47.18], [121.35, 47.25], [121.25, 47.5], [121.47, 48.03], [121.82, 48.18], [121.85, 48.25], [121.75, 48.5], [121.85, 48.75], [121.75, 49.0], [121.97, 49.53], [122.32, 49.68], [122.47, 50.03], [123.0, 50.25], [123.25, 50.15], [123.5, 50.25], [124.03, 50.03], [124.25, 49.5], [124.15, 49.25], [124.25, 49.0], [124.04, 48.5], [124.18, 48.18], [124.53, 48.03], [124.75, 47.5], [124.65, 47.25], [124.75, 47.0], [124.53, 46.47], [124.18, 46.32], [124.15, 46.25], [124.25, 46.0], [124.03, 45.47], [123.5, 45.25], [123.25, 45.35], [123.18, 45.32], [123.15, 45.25], [123.25, 45.0], [123.03, 44.47], [122.68, 44.32], [122.53, 43.97], [122.0, 43.75], [121.47, 43.97], [121.32, 44.32], [120.97, 44.47], [120.75, 45.0], [120.85, 45.25], [120.75, 45.5]]]]}, "2023-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, 45.5], [120.85, 45.75], [120.75, 46.0], [120.85, 46.25], [120.75, 46.5], [120.97, 47.03], [121.32, 47.18], [121.35, 47.25], [121.25, 47.5], [121.47, 48.03], [121.82, 48.18], [121.85, 48.25], [121.75, 48.5], [121.85, 48.75], [121.75, 49.0], [121.97, 49.53], [122.32, 49.68], [122.47, 50.03], [123.0, 50.25], [123.25, 50.15], [123.5, 50.25], [124.03, 50.03], [124.25, 49.5], [124.15, 49.25], [124.25, 49.0], [124.04, 48.5], [124.18, 48.18], [124.53, 48.03], [124.75, 47.5], [124.65, 47.25], [124.75, 47.0], [124.53, 46.47], [124.18, 46.32], [124.15, 46.25], [124.25, 46.0], [124.03, 45.47], [123.5, 45.25], [123.25, 45.35], [123.18, 45.32], [123.15, 45.25], [123.25, 45.0], [123.03, 44.47], [122.68, 44.32], [122.53, 43.97], [122.0, 43.75], [121.47, 43.97], [121.32, 44.32], [120.97, 44.47], [120.75, 45.0], [120.85, 45.25], [120.75, 45.5]]]]}, "2023-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.75, 45.5], [120.85, 45.75], [120.75, 46.0], 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"description": "Mean t2m anomaly over entire duration", "value": 5.991703512086645}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.384648958587832, 8.127893961016866, 7.584039494673618]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.089845907839333, 11.213653720235698, 11.182919766889256]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [6.659239708520593, 5.710527095632272, 5.605343732107073]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.476406350797049, 6.8293601496021665, 6.735191730666088]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.913256475427456, 1.6869942570902472, 1.7469196883425255]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.3931895472812714, 2.0287477544865173, 2.1067447008967477]}}