{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:25:50.828335", "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": "2021-May-17_to_2021-May-20_142.5_49.5"}, "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": 2021050002238}, "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": "May 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 20 2021"}, "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": 52716.25408748856}, "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": ["Russian Federation"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Russian-Far-East"]}, "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", "Sea of Okhotsk"]}, "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": 49.5}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.75}, "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": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-05-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, 48.75], [141.25, 49.0], [141.35, 49.25], [141.25, 49.5], [141.47, 50.03], [141.82, 50.18], [141.97, 50.53], [142.5, 50.75], [143.03, 50.53], [143.25, 50.0], [143.15, 49.75], [143.25, 49.5], [143.15, 49.25], [143.25, 49.0], [143.15, 48.75], [143.25, 48.5], [143.04, 48.0], [143.25, 47.5], [143.03, 46.97], [142.68, 46.82], [142.53, 46.47], [142.0, 46.25], [141.47, 46.47], [141.25, 47.0], [141.46, 47.5], [141.25, 48.0], [141.35, 48.25], [141.25, 48.5], [141.35, 48.75]]]]}, "2021-05-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.46, 47.5], [141.25, 48.0], [141.35, 48.25], [141.25, 48.5], [141.35, 48.75], [141.25, 49.0], [141.35, 49.25], [141.25, 49.5], [141.47, 50.03], [141.82, 50.18], [141.97, 50.53], [142.32, 50.68], [142.35, 50.75], [142.25, 51.0], [142.47, 51.53], [143.0, 51.75], [143.53, 51.53], [143.68, 51.18], [144.03, 51.03], [144.18, 50.68], [144.53, 50.53], [144.75, 50.0], [144.65, 49.75], [144.75, 49.5], [144.65, 49.25], [144.75, 49.0], [144.53, 48.47], [144.0, 48.25], [143.75, 48.35], [143.63, 48.3], [143.75, 48.0], [143.65, 47.75], [143.75, 47.5], [143.53, 46.97], [143.0, 46.75], [142.75, 46.85], [142.68, 46.82], [142.65, 46.75], [142.75, 46.5], [142.53, 45.97], [142.0, 45.75], [141.47, 45.97], [141.25, 46.5], [141.35, 46.75], [141.25, 47.0], [141.46, 47.5]]]]}, "2021-05-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.46, 47.5], [141.25, 48.0], [141.35, 48.25], [141.25, 48.5], [141.35, 48.75], [141.25, 49.0], [141.35, 49.25], [141.25, 49.5], [141.47, 50.03], [141.82, 50.18], [141.97, 50.53], [142.32, 50.68], [142.35, 50.75], [142.25, 51.0], [142.47, 51.53], [143.0, 51.75], [143.53, 51.53], [143.68, 51.18], [144.03, 51.03], [144.18, 50.68], [144.53, 50.53], [144.75, 50.0], [144.65, 49.75], [144.75, 49.5], [144.65, 49.25], [144.75, 49.0], [144.53, 48.47], [144.0, 48.25], [143.75, 48.35], [143.63, 48.3], [143.75, 48.0], [143.65, 47.75], [143.75, 47.5], [143.53, 46.97], [143.0, 46.75], [142.75, 46.85], [142.68, 46.82], [142.65, 46.75], [142.75, 46.5], [142.53, 45.97], [142.0, 45.75], [141.47, 45.97], [141.25, 46.5], [141.35, 46.75], [141.25, 47.0], [141.46, 47.5]]]]}, "2021-05-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.25, 49.0], [141.47, 49.53], [141.82, 49.68], [141.85, 49.75], [141.75, 50.0], [141.97, 50.53], [142.32, 50.68], [142.35, 50.75], [142.25, 51.0], [142.47, 51.53], [143.0, 51.75], [143.53, 51.53], [143.68, 51.18], [144.03, 51.03], [144.18, 50.68], [144.53, 50.53], [144.75, 50.0], [144.65, 49.75], [144.75, 49.5], [144.65, 49.25], [144.75, 49.0], [144.53, 48.47], [144.0, 48.25], [143.75, 48.35], [143.63, 48.3], [143.75, 48.0], [143.65, 47.75], [143.75, 47.5], [143.53, 46.97], [143.0, 46.75], [142.75, 46.85], [142.63, 46.8], [142.75, 46.5], [142.53, 45.97], [142.0, 45.75], [141.47, 45.97], [141.25, 46.5], [141.47, 47.03], [141.88, 47.2], [141.75, 47.5], [141.85, 47.75], [141.75, 48.0], [141.85, 48.25], [141.82, 48.32], [141.47, 48.47], [141.25, 49.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 8.277090401806106}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.973692538826815}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [10.06140851946401, 10.68865220581074, 10.176784780846162, 10.498833499412797]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [12.391667155681887, 13.853410080523247, 14.320837207071406, 14.609638963027919]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.478487941250887, 5.431729862627033, 4.764183991138376, 4.905069711411045]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.917858809125221, 8.277090401806106, 7.6388853179852845, 7.719032088672748]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7725561767514209, 2.0554795785300497, 1.8138804059054225, 1.752371161712265]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.186915789470196, 2.5241868694142755, 2.2816485909545348, 2.283036863005258]}}