{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:55:40.029524", "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-01_to_2023-Oct-03_124.0_38.0"}, "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": 2023100000850}, "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 01 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 03 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": 146018.64169437735}, "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": ["Bohai 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": 38.0}, "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": 124.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "124.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 119.5}, "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": 36.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 40.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[118.75, 39.0], [118.97, 39.53], [119.32, 39.68], [119.47, 40.03], [119.82, 40.18], [119.97, 40.53], [120.5, 40.75], [120.75, 40.65], [120.82, 40.68], [120.97, 41.03], [121.5, 41.25], [122.03, 41.03], [122.25, 40.5], [122.03, 39.97], [121.68, 39.82], [121.65, 39.75], [121.75, 39.5], [121.63, 39.2], [121.75, 39.15], [121.82, 39.18], [121.97, 39.53], [122.5, 39.75], [122.75, 39.65], [122.82, 39.68], [122.97, 40.03], [123.5, 40.25], [123.75, 40.15], [124.0, 40.25], [124.25, 40.15], [124.5, 40.25], [125.03, 40.03], [125.18, 39.68], [125.53, 39.53], [125.75, 39.0], [125.53, 38.47], [125.18, 38.32], [125.03, 37.97], [124.68, 37.82], [124.65, 37.75], [124.68, 37.68], [125.03, 37.53], [125.25, 37.0], [125.15, 36.75], [125.25, 36.5], [125.03, 35.97], [124.5, 35.75], [124.25, 35.85], [124.0, 35.75], [123.75, 35.85], [123.5, 35.75], [123.25, 35.85], [123.18, 35.82], [123.03, 35.47], [122.5, 35.25], [122.25, 35.35], [122.0, 35.25], [121.75, 35.35], [121.5, 35.25], [121.25, 35.35], [121.0, 35.25], [120.75, 35.35], [120.5, 35.25], [119.97, 35.47], [119.75, 36.0], [119.97, 36.53], [120.5, 36.75], [120.75, 36.65], [120.82, 36.68], [120.97, 37.03], [121.38, 37.2], [121.32, 37.32], [121.25, 37.35], [121.0, 37.25], [120.75, 37.35], [120.5, 37.25], [120.25, 37.35], [120.0, 37.25], [119.75, 37.35], [119.5, 37.25], [118.97, 37.47], [118.75, 38.0], [118.85, 38.25], [118.75, 38.5], [118.85, 38.75], [118.75, 39.0]]]]}}, "IPCC_regions": {"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": {"2023-10-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.75, 38.5], [118.85, 38.75], [118.75, 39.0], [118.97, 39.53], [119.32, 39.68], [119.47, 40.03], [119.82, 40.18], [119.97, 40.53], [120.5, 40.75], [120.75, 40.65], [120.82, 40.68], [120.97, 41.03], [121.5, 41.25], [122.03, 41.03], [122.25, 40.5], [122.03, 39.97], [121.68, 39.82], [121.65, 39.75], [121.75, 39.5], [121.63, 39.2], [121.75, 39.15], [121.82, 39.18], [121.97, 39.53], [122.5, 39.75], [122.75, 39.65], [122.82, 39.68], [122.97, 40.03], [123.5, 40.25], [123.75, 40.15], [124.0, 40.25], [124.25, 40.15], [124.5, 40.25], [125.03, 40.03], [125.18, 39.68], [125.53, 39.53], [125.75, 39.0], [125.53, 38.47], [125.18, 38.32], [125.03, 37.97], [124.68, 37.82], [124.65, 37.75], [124.68, 37.68], [125.03, 37.53], [125.25, 37.0], [125.15, 36.75], [125.25, 36.5], [125.03, 35.97], [124.5, 35.75], [124.25, 35.85], [124.0, 35.75], [123.75, 35.85], [123.5, 35.75], [123.25, 35.85], [123.18, 35.82], [123.03, 35.47], [122.5, 35.25], [122.25, 35.35], [122.0, 35.25], [121.75, 35.35], [121.5, 35.25], [121.25, 35.35], [121.0, 35.25], [120.75, 35.35], [120.5, 35.25], [119.97, 35.47], [119.75, 36.0], [119.97, 36.53], [120.5, 36.75], [120.75, 36.65], [120.82, 36.68], [120.97, 37.03], [121.38, 37.2], [121.32, 37.32], [121.25, 37.35], [121.0, 37.25], [120.75, 37.35], [120.5, 37.25], [120.25, 37.35], [120.0, 37.25], [119.75, 37.35], [119.5, 37.25], [118.97, 37.47], [118.75, 38.0], [118.85, 38.25], [118.75, 38.5]]]]}, "2023-10-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.75, 38.5], [118.85, 38.75], [118.75, 39.0], [118.97, 39.53], [119.32, 39.68], [119.47, 40.03], [119.82, 40.18], [119.97, 40.53], [120.5, 40.75], [120.75, 40.65], [120.82, 40.68], [120.97, 41.03], [121.5, 41.25], [122.03, 41.03], [122.25, 40.5], [122.03, 39.97], [121.68, 39.82], [121.65, 39.75], [121.75, 39.5], [121.63, 39.2], [121.75, 39.15], [121.82, 39.18], [121.97, 39.53], [122.5, 39.75], [122.75, 39.65], [122.82, 39.68], [122.97, 40.03], [123.5, 40.25], [123.75, 40.15], [124.0, 40.25], [124.25, 40.15], [124.5, 40.25], [125.03, 40.03], [125.18, 39.68], [125.53, 39.53], [125.75, 39.0], [125.53, 38.47], [125.18, 38.32], [125.03, 37.97], [124.68, 37.82], [124.65, 37.75], [124.68, 37.68], [125.03, 37.53], [125.25, 37.0], [125.15, 36.75], [125.25, 36.5], [125.03, 35.97], [124.5, 35.75], [124.25, 35.85], [124.0, 35.75], [123.75, 35.85], [123.5, 35.75], [123.25, 35.85], [123.18, 35.82], [123.03, 35.47], [122.5, 35.25], [122.25, 35.35], [122.0, 35.25], [121.75, 35.35], [121.5, 35.25], [121.25, 35.35], [121.0, 35.25], [120.75, 35.35], [120.5, 35.25], [119.97, 35.47], [119.75, 36.0], [119.97, 36.53], [120.5, 36.75], [120.75, 36.65], [120.82, 36.68], [120.97, 37.03], [121.38, 37.2], [121.32, 37.32], [121.25, 37.35], [121.0, 37.25], [120.75, 37.35], [120.5, 37.25], [120.25, 37.35], [120.0, 37.25], [119.75, 37.35], [119.5, 37.25], [118.97, 37.47], [118.75, 38.0], [118.85, 38.25], [118.75, 38.5]]]]}, "2023-10-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[118.75, 38.5], [118.85, 38.75], [118.75, 39.0], [118.97, 39.53], [119.32, 39.68], [119.47, 40.03], [119.82, 40.18], [119.97, 40.53], [120.5, 40.75], [120.75, 40.65], [120.82, 40.68], [120.97, 41.03], [121.5, 41.25], [122.03, 41.03], [122.25, 40.5], [122.03, 39.97], [121.68, 39.82], [121.65, 39.75], [121.75, 39.5], [121.63, 39.2], [121.75, 39.15], [121.82, 39.18], [121.97, 39.53], [122.5, 39.75], [122.75, 39.65], [122.82, 39.68], [122.97, 40.03], [123.5, 40.25], [123.75, 40.15], [124.0, 40.25], [124.25, 40.15], [124.5, 40.25], [125.03, 40.03], [125.18, 39.68], [125.53, 39.53], [125.75, 39.0], [125.53, 38.47], [125.18, 38.32], [125.03, 37.97], [124.68, 37.82], [124.65, 37.75], [124.68, 37.68], [125.03, 37.53], [125.25, 37.0], [125.15, 36.75], [125.25, 36.5], [125.03, 35.97], [124.5, 35.75], [124.25, 35.85], [124.0, 35.75], [123.75, 35.85], [123.5, 35.75], [123.25, 35.85], [123.18, 35.82], [123.03, 35.47], [122.5, 35.25], [122.25, 35.35], [122.0, 35.25], [121.75, 35.35], [121.5, 35.25], [121.25, 35.35], [121.0, 35.25], [120.75, 35.35], [120.5, 35.25], [119.97, 35.47], [119.75, 36.0], [119.97, 36.53], [120.5, 36.75], [120.75, 36.65], [120.82, 36.68], [120.97, 37.03], [121.38, 37.2], [121.32, 37.32], [121.25, 37.35], [121.0, 37.25], [120.75, 37.35], [120.5, 37.25], [120.25, 37.35], [120.0, 37.25], [119.75, 37.35], [119.5, 37.25], [118.97, 37.47], [118.75, 38.0], [118.85, 38.25], [118.75, 38.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.426706156272985}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.6179386806444467}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.580296659403984, 21.732423341528772, 21.678578885940453]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.642392341673883, 22.379122691437544, 22.446415487043794]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.328890103867548, 2.699585274299565, 2.8253406637662275]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.6998707106010897, 4.426706156272985, 3.8336918785155945]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4335638191027784, 1.5701855611211308, 1.6379324915772446]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6833463042475225, 1.93532469177583, 1.9400159412208868]}}