{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:54:55.600672", "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-Aug-02_to_2023-Aug-09_121.5_23.5"}, "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": 2023080001165}, "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": "August 02 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 09 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 70422.30354231223}, "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": ["Taiwan, Province of 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": ["East China Sea", "Philippine 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": 23.5}, "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": 121.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "121.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.0}, "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": 22.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 25.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[123.65, 24.25], [123.75, 24.0], [123.53, 23.47], [123.0, 23.25], [122.75, 23.35], [122.68, 23.32], [122.65, 23.25], [122.75, 23.0], [122.53, 22.47], [122.18, 22.32], [122.03, 21.97], [121.5, 21.75], [120.97, 21.97], [120.82, 22.32], [120.47, 22.47], [120.25, 23.0], [120.35, 23.25], [120.25, 23.5], [120.46, 24.0], [120.25, 24.5], [120.35, 24.75], [120.25, 25.0], [120.47, 25.53], [120.82, 25.68], [120.97, 26.03], [121.5, 26.25], [121.75, 26.15], [122.0, 26.25], [122.25, 26.15], [122.5, 26.25], [122.75, 26.15], [123.0, 26.25], [123.53, 26.03], [123.75, 25.5], [123.65, 25.25], [123.75, 25.0], [123.65, 24.75], [123.75, 24.5], [123.65, 24.25]]]]}}, "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": {"2023-08-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 24.03], [121.5, 24.25], [122.03, 24.03], [122.25, 23.5], [122.03, 22.97], [121.5, 22.75], [120.97, 22.97], [120.75, 23.5], [120.97, 24.03]]]]}, "2023-08-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.96, 24.0], [120.75, 24.5], [120.97, 25.03], [121.32, 25.18], [121.47, 25.53], [122.0, 25.75], [122.25, 25.65], [122.5, 25.75], [123.03, 25.53], [123.18, 25.18], [123.53, 25.03], [123.75, 24.5], [123.65, 24.25], [123.75, 24.0], [123.53, 23.47], [123.0, 23.25], [122.75, 23.35], [122.68, 23.32], [122.65, 23.25], [122.75, 23.0], [122.53, 22.47], [122.0, 22.25], [121.75, 22.35], [121.5, 22.25], [121.25, 22.35], [121.0, 22.25], [120.47, 22.47], [120.25, 23.0], [120.47, 23.53], [120.82, 23.68], [120.96, 24.0]]]]}, "2023-08-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.25, 23.5], [120.47, 24.03], [120.82, 24.18], [120.85, 24.25], [120.75, 24.5], [120.85, 24.75], [120.75, 25.0], [120.97, 25.53], [121.5, 25.75], [121.75, 25.65], [121.82, 25.68], [121.97, 26.03], [122.5, 26.25], [123.03, 26.03], [123.18, 25.68], [123.53, 25.53], [123.75, 25.0], [123.65, 24.75], [123.75, 24.5], [123.65, 24.25], [123.75, 24.0], [123.53, 23.47], [123.0, 23.25], [122.75, 23.35], [122.68, 23.32], [122.65, 23.25], [122.75, 23.0], [122.53, 22.47], [122.0, 22.25], [121.75, 22.35], [121.5, 22.25], [121.25, 22.35], [121.0, 22.25], [120.47, 22.47], [120.25, 23.0], [120.35, 23.25], [120.25, 23.5]]]]}, "2023-08-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.25, 23.5], [120.46, 24.0], [120.25, 24.5], [120.35, 24.75], [120.25, 25.0], [120.47, 25.53], [120.82, 25.68], [120.97, 26.03], [121.5, 26.25], [121.75, 26.15], [122.0, 26.25], [122.25, 26.15], [122.5, 26.25], [122.75, 26.15], [123.0, 26.25], [123.53, 26.03], [123.75, 25.5], [123.65, 25.25], [123.75, 25.0], [123.65, 24.75], [123.75, 24.5], [123.65, 24.25], [123.75, 24.0], [123.53, 23.47], [123.0, 23.25], [122.75, 23.35], [122.68, 23.32], [122.65, 23.25], [122.75, 23.0], [122.53, 22.47], [122.18, 22.32], [122.03, 21.97], [121.5, 21.75], [120.97, 21.97], [120.82, 22.32], [120.47, 22.47], [120.25, 23.0], [120.35, 23.25], [120.25, 23.5]]]]}, "2023-08-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.25, 23.5], [120.46, 24.0], [120.25, 24.5], [120.35, 24.75], [120.25, 25.0], [120.47, 25.53], [120.82, 25.68], [120.97, 26.03], [121.5, 26.25], [121.75, 26.15], [122.0, 26.25], [122.25, 26.15], [122.5, 26.25], [122.75, 26.15], [123.0, 26.25], [123.53, 26.03], [123.75, 25.5], [123.65, 25.25], [123.75, 25.0], [123.65, 24.75], [123.75, 24.5], [123.65, 24.25], [123.75, 24.0], [123.53, 23.47], [123.0, 23.25], [122.75, 23.35], [122.5, 23.25], [122.25, 23.35], [122.18, 23.32], [122.15, 23.25], [122.25, 23.0], [122.15, 22.75], [122.25, 22.5], [122.03, 21.97], [121.5, 21.75], [120.97, 21.97], [120.82, 22.32], [120.47, 22.47], [120.25, 23.0], [120.35, 23.25], [120.25, 23.5]]]]}, "2023-08-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.25, 25.0], [120.47, 25.53], [120.82, 25.68], [120.97, 26.03], [121.5, 26.25], [121.75, 26.15], [122.0, 26.25], [122.25, 26.15], [122.5, 26.25], [122.75, 26.15], [123.0, 26.25], [123.53, 26.03], [123.75, 25.5], [123.65, 25.25], [123.75, 25.0], [123.65, 24.75], [123.75, 24.5], [123.65, 24.25], [123.75, 24.0], [123.53, 23.47], [123.0, 23.25], [122.47, 23.47], [122.32, 23.82], [122.25, 23.85], [122.18, 23.82], [122.15, 23.75], [122.25, 23.5], [122.15, 23.25], [122.25, 23.0], [122.15, 22.75], [122.25, 22.5], [122.03, 21.97], [121.5, 21.75], [120.97, 21.97], [120.82, 22.32], [120.47, 22.47], [120.25, 23.0], [120.47, 23.53], [120.82, 23.68], [120.85, 23.75], [120.82, 23.82], [120.47, 23.97], [120.25, 24.5], [120.35, 24.75], [120.25, 25.0]]]]}, "2023-08-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 25.53], [121.5, 25.75], [122.03, 25.53], [122.25, 25.0], [122.03, 24.47], [121.5, 24.25], [120.97, 24.47], [120.75, 25.0], [120.97, 25.53]]]]}, "2023-08-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[120.97, 25.53], [121.5, 25.75], [122.03, 25.53], [122.25, 25.0], [122.03, 24.47], [121.5, 24.25], [120.97, 24.47], [120.75, 25.0], [120.97, 25.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.4271031657441995}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4385156204983116}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.857774101054304, 28.27511183889129, 28.110793613181613, 28.25368225634128, 28.218993786917792, 28.3378836656413, 29.011781925076548, 29.236450209702184]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.857774101054304, 30.59470938299529, 30.44883898943732, 30.41546672964074, 30.22376072619005, 30.246309550376964, 29.011781925076548, 29.236450209702184]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9874540928137776, 1.2982120172472282, 1.6808312594145804, 1.421478393881148, 1.4784164845457994, 1.307646228523018, 1.3906046427065917, 1.6273641352537425]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.9874540928137776, 1.8799614978938735, 3.4271031657441995, 2.7680729497168954, 2.62450450492787, 2.586141534439264, 1.3906046427065917, 1.6273641352537425]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.371014866612132, 1.666103876512204, 2.02419558613608, 1.819611636953478, 1.8581162647574518, 1.6503338253686515, 1.2672135032842713, 1.5081964942847488]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.371014866612132, 2.390360336597732, 3.2289828781773675, 2.9594549929482117, 2.639378970156227, 2.2358176918150807, 1.2672135032842713, 1.5081964942847488]}}