{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:05:19.965034", "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": "2025-May-14_to_2025-May-16_132.0_-69.0"}, "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": 2025050001870}, "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 14 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 16 2025"}, "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": 51230.621628565}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": []}, "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": -69.0}, "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": 132.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "132.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 129.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -70.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -68.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[128.47, -67.97], [128.82, -67.82], [128.97, -67.47], [129.5, -67.25], [129.75, -67.35], [130.0, -67.25], [130.25, -67.35], [130.5, -67.25], [130.75, -67.35], [131.0, -67.25], [131.25, -67.35], [131.5, -67.25], [132.03, -67.47], [132.18, -67.82], [132.25, -67.85], [132.32, -67.82], [132.47, -67.47], [133.0, -67.25], [133.53, -67.47], [133.68, -67.82], [133.75, -67.85], [134.0, -67.75], [134.25, -67.85], [134.5, -67.75], [134.75, -67.85], [135.0, -67.75], [135.25, -67.85], [135.5, -67.75], [135.75, -67.85], [136.0, -67.75], [136.53, -67.97], [136.75, -68.5], [136.53, -69.03], [136.0, -69.25], [135.75, -69.15], [135.68, -69.18], [135.53, -69.53], [135.18, -69.68], [135.03, -70.03], [134.5, -70.25], [134.25, -70.15], [134.0, -70.25], [133.75, -70.15], [133.68, -70.18], [133.53, -70.53], [133.0, -70.75], [132.75, -70.65], [132.5, -70.75], [132.25, -70.65], [132.0, -70.75], [131.47, -70.53], [131.32, -70.18], [131.25, -70.15], [131.0, -70.25], [130.75, -70.15], [130.5, -70.25], [130.25, -70.15], [130.0, -70.25], [129.47, -70.03], [129.32, -69.68], [128.97, -69.53], [128.82, -69.18], [128.47, -69.03], [128.25, -68.5], [128.47, -67.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-05-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.47, -69.03], [128.25, -68.5], [128.47, -67.97], [128.82, -67.82], [128.97, -67.47], [129.5, -67.25], [129.75, -67.35], [130.0, -67.25], [130.25, -67.35], [130.5, -67.25], [130.75, -67.35], [131.0, -67.25], [131.25, -67.35], [131.5, -67.25], [132.03, -67.47], [132.18, -67.82], [132.25, -67.85], [132.32, -67.82], [132.47, -67.47], [133.0, -67.25], [133.53, -67.47], [133.68, -67.82], [133.75, -67.85], [134.0, -67.75], [134.25, -67.85], [134.5, -67.75], [134.75, -67.85], [135.0, -67.75], [135.25, -67.85], [135.5, -67.75], [135.75, -67.85], [136.0, -67.75], [136.53, -67.97], [136.75, -68.5], [136.53, -69.03], [136.0, 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{"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.418051924590088}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.97675501540496}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-29.9849684839663, -29.64145822939659, -30.040275153560856]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-21.80264320373533, -20.570266469319648, -21.845058186848945]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.350460184402873, 9.296838469262921, 9.282966392549074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.371991407813255, 10.299150969875285, 10.418051924590088]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.394185084413987, 1.6239530631197732, 1.5971817666370007]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5666022132077293, 1.7035895993725785, 1.783611421644796]}}