{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:29.059794", "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-Feb-27_to_2023-Mar-01_144.0_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": 2023020002486}, "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": "February 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 01 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": 99965.92929742244}, "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": 144.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.0\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": 145.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 43.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-02-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, 41.0], [139.47, 41.53], [139.82, 41.68], [139.96, 42.0], [139.75, 42.5], [139.97, 43.03], [140.32, 43.18], [140.47, 43.53], [141.0, 43.75], [141.53, 43.53], [141.68, 43.18], [141.75, 43.15], [142.0, 43.25], [142.53, 43.03], [142.68, 42.68], [142.75, 42.65], [143.0, 42.75], [143.5, 42.54], [144.0, 42.75], [144.25, 42.65], [144.5, 42.75], [145.03, 42.53], [145.25, 42.0], [145.15, 41.75], [145.18, 41.68], [145.53, 41.53], [145.75, 41.0], [145.53, 40.47], [145.0, 40.25], [144.75, 40.35], [144.5, 40.25], [144.25, 40.35], [144.18, 40.32], [144.03, 39.97], [143.5, 39.75], [143.25, 39.85], [143.0, 39.75], [142.75, 39.85], [142.68, 39.82], [142.53, 39.47], [142.0, 39.25], [141.47, 39.47], [141.32, 39.82], [141.25, 39.85], [141.18, 39.82], [141.03, 39.47], [140.68, 39.32], [140.53, 38.97], [140.0, 38.75], [139.75, 38.85], [139.5, 38.75], [138.97, 38.97], [138.75, 39.5], [138.97, 40.03], [139.32, 40.18], [139.46, 40.5], [139.25, 41.0]]]]}, "2023-02-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, 41.0], [139.47, 41.53], [139.82, 41.68], [139.96, 42.0], [139.75, 42.5], [139.97, 43.03], [140.32, 43.18], [140.47, 43.53], [141.0, 43.75], [141.53, 43.53], [141.68, 43.18], [141.75, 43.15], [142.0, 43.25], [142.53, 43.03], [142.68, 42.68], [142.75, 42.65], [143.0, 42.75], [143.5, 42.54], [144.0, 42.75], [144.25, 42.65], [144.5, 42.75], [145.03, 42.53], [145.25, 42.0], [145.15, 41.75], [145.18, 41.68], [145.53, 41.53], [145.75, 41.0], [145.53, 40.47], [145.0, 40.25], [144.75, 40.35], [144.5, 40.25], [144.25, 40.35], [144.18, 40.32], [144.03, 39.97], [143.5, 39.75], [143.25, 39.85], [143.0, 39.75], [142.75, 39.85], [142.68, 39.82], [142.53, 39.47], [142.0, 39.25], [141.47, 39.47], [141.32, 39.82], [141.25, 39.85], [141.18, 39.82], [141.03, 39.47], [140.68, 39.32], [140.53, 38.97], [140.0, 38.75], [139.75, 38.85], [139.5, 38.75], [138.97, 38.97], [138.75, 39.5], [138.97, 40.03], [139.32, 40.18], [139.46, 40.5], [139.25, 41.0]]]]}, "2023-03-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, 41.0], [139.47, 41.53], [139.82, 41.68], [139.96, 42.0], [139.75, 42.5], [139.97, 43.03], [140.32, 43.18], [140.47, 43.53], [141.0, 43.75], [141.53, 43.53], [141.68, 43.18], [141.75, 43.15], [142.0, 43.25], [142.53, 43.03], [142.68, 42.68], [142.75, 42.65], [143.0, 42.75], [143.5, 42.54], [144.0, 42.75], [144.25, 42.65], [144.5, 42.75], [145.03, 42.53], [145.25, 42.0], [145.15, 41.75], [145.18, 41.68], [145.53, 41.53], [145.75, 41.0], [145.53, 40.47], [145.0, 40.25], [144.75, 40.35], [144.5, 40.25], [144.25, 40.35], [144.18, 40.32], [144.03, 39.97], [143.5, 39.75], [143.25, 39.85], [143.0, 39.75], [142.75, 39.85], [142.68, 39.82], [142.53, 39.47], [142.0, 39.25], [141.47, 39.47], [141.32, 39.82], [141.25, 39.85], [141.18, 39.82], [141.03, 39.47], [140.68, 39.32], [140.53, 38.97], [140.0, 38.75], [139.75, 38.85], [139.5, 38.75], [138.97, 38.97], [138.75, 39.5], [138.97, 40.03], [139.32, 40.18], [139.46, 40.5], [139.25, 41.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.56328914068888}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 5.028821595023999}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.712529064849548, 7.2388466639171725, 4.474304323722038]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [8.085606581509467, 10.59877723349365, 7.730320641783976]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.324628164039926, 6.802618029393546, 3.9592185916385145]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.593827268080247, 9.56328914068888, 5.6505936360068745]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.9288271093273843, 3.028984083075336, 1.775202677997972]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.741773819805202, 3.7464866047800327, 2.6630093402364095]}}