{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:47.707438", "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": "2017-Dec-22_to_2017-Dec-24_141.0_41.5"}, "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": 2017120002338}, "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": "December 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 24 2017"}, "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": 53332.94723004102}, "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": ["Japan"]}, "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": ["Japan Sea", "North Pacific Ocean"]}, "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": 41.5}, "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": 141.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-12-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.85, 41.75], [138.75, 42.0], [138.97, 42.53], [139.5, 42.75], [139.75, 42.65], [140.0, 42.75], [140.25, 42.65], [140.5, 42.75], [140.75, 42.65], [140.82, 42.68], [140.97, 43.03], [141.5, 43.25], [142.03, 43.03], [142.18, 42.68], [142.53, 42.53], [142.68, 42.18], [142.75, 42.15], [143.0, 42.25], [143.53, 42.03], [143.75, 41.5], [143.65, 41.25], [143.68, 41.18], [144.03, 41.03], [144.18, 40.68], [144.53, 40.53], [144.75, 40.0], [144.53, 39.47], [144.0, 39.25], [143.75, 39.35], [143.5, 39.25], [142.97, 39.47], [142.75, 40.0], [142.85, 40.25], [142.82, 40.32], [142.75, 40.35], [142.5, 40.25], [142.25, 40.35], [142.0, 40.25], [141.47, 40.47], [141.32, 40.82], [141.25, 40.85], [141.0, 40.75], [140.75, 40.85], [140.68, 40.82], [140.53, 40.47], [140.0, 40.25], [139.75, 40.35], [139.5, 40.25], [138.97, 40.47], [138.75, 41.0], [138.85, 41.25], [138.75, 41.5], [138.85, 41.75]]]]}, "2017-12-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.85, 41.75], [138.75, 42.0], [138.97, 42.53], [139.5, 42.75], [139.75, 42.65], [140.0, 42.75], [140.25, 42.65], [140.5, 42.75], [140.75, 42.65], [140.82, 42.68], [140.97, 43.03], [141.5, 43.25], [142.03, 43.03], [142.18, 42.68], [142.53, 42.53], [142.68, 42.18], [142.75, 42.15], [143.0, 42.25], [143.53, 42.03], [143.75, 41.5], [143.65, 41.25], [143.68, 41.18], [144.03, 41.03], [144.18, 40.68], [144.53, 40.53], [144.75, 40.0], [144.53, 39.47], [144.0, 39.25], [143.75, 39.35], [143.5, 39.25], [142.97, 39.47], [142.75, 40.0], [142.85, 40.25], [142.82, 40.32], [142.75, 40.35], [142.5, 40.25], [142.25, 40.35], [142.0, 40.25], [141.47, 40.47], [141.32, 40.82], [141.25, 40.85], [141.0, 40.75], [140.75, 40.85], [140.68, 40.82], [140.53, 40.47], [140.0, 40.25], [139.75, 40.35], [139.5, 40.25], [138.97, 40.47], [138.75, 41.0], [138.85, 41.25], [138.75, 41.5], [138.85, 41.75]]]]}, "2017-12-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.85, 41.75], [138.75, 42.0], [138.97, 42.53], [139.5, 42.75], [139.75, 42.65], [140.0, 42.75], [140.25, 42.65], [140.5, 42.75], [140.75, 42.65], [140.82, 42.68], [140.97, 43.03], [141.5, 43.25], [142.03, 43.03], [142.18, 42.68], [142.53, 42.53], [142.68, 42.18], [142.75, 42.15], [143.0, 42.25], [143.53, 42.03], [143.75, 41.5], [143.65, 41.25], [143.68, 41.18], [144.03, 41.03], [144.18, 40.68], [144.53, 40.53], [144.75, 40.0], [144.53, 39.47], [144.0, 39.25], [143.75, 39.35], [143.5, 39.25], [142.97, 39.47], [142.75, 40.0], [142.85, 40.25], [142.82, 40.32], [142.75, 40.35], [142.5, 40.25], [142.25, 40.35], [142.0, 40.25], [141.47, 40.47], [141.32, 40.82], [141.25, 40.85], [141.0, 40.75], [140.75, 40.85], [140.68, 40.82], [140.53, 40.47], [140.0, 40.25], [139.75, 40.35], [139.5, 40.25], [138.97, 40.47], [138.75, 41.0], [138.85, 41.25], [138.75, 41.5], [138.85, 41.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.321860154298463}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.481290904829073}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.6607059069010575, 6.315171614737039, 9.240596117306211]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.212440648018571, 9.095116693507748, 12.281215815726341]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.5974110269712485, 4.369852716693396, 7.476608970822576]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.574566521963845, 5.512813381695821, 8.321860154298463]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7568213547478075, 1.6615643225242602, 2.8325512115853444]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.060485898964039, 2.0616663520432037, 3.1909619328624568]}}