{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:36.107556", "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": "2022-Apr-09_to_2022-Apr-11_172.0_-46.5"}, "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": 2022040001596}, "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": "April 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 11 2022"}, "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": 83577.22658552785}, "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": ["New Zealand"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["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": -46.5}, "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": 172.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "172.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 169.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 173.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -49.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -46.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[168.47, -46.47], [169.0, -46.25], [169.25, -46.35], [169.32, -46.32], [169.47, -45.97], [170.0, -45.75], [170.25, -45.85], [170.32, -45.82], [170.47, -45.47], [171.0, -45.25], [171.25, -45.35], [171.5, -45.25], [171.75, -45.35], [172.0, -45.25], [172.25, -45.35], [172.5, -45.25], [172.75, -45.35], [173.0, -45.25], [173.53, -45.47], [173.75, -46.0], [173.63, -46.3], [174.03, -46.47], [174.25, -47.0], [174.03, -47.53], [173.5, -47.75], [173.25, -47.65], [173.0, -47.75], [172.75, -47.65], [172.68, -47.68], [172.53, -48.03], [172.18, -48.18], [172.15, -48.25], [172.18, -48.32], [172.25, -48.35], [172.5, -48.25], [172.75, -48.35], [173.0, -48.25], [173.53, -48.47], [173.75, -49.0], [173.53, -49.53], [173.18, -49.68], [173.03, -50.03], [172.5, -50.25], [172.25, -50.15], [172.0, -50.25], [171.75, -50.15], [171.5, -50.25], [170.97, -50.03], [170.82, -49.68], [170.47, -49.53], [170.25, -49.0], [170.35, -48.75], [170.3, -48.62], [170.0, -48.75], [169.47, -48.53], [169.32, -48.18], [168.97, -48.03], [168.82, -47.68], [168.47, -47.53], [168.25, -47.0], [168.47, -46.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand", "Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.47, -47.53], [168.25, -47.0], [168.47, -46.47], [169.0, -46.25], [169.25, -46.35], [169.32, -46.32], [169.47, -45.97], [170.0, -45.75], [170.25, -45.85], [170.32, -45.82], [170.47, -45.47], [171.0, -45.25], [171.25, -45.35], [171.5, -45.25], [171.75, -45.35], [172.0, -45.25], [172.25, -45.35], [172.5, -45.25], [172.75, -45.35], [173.0, -45.25], [173.53, -45.47], [173.75, -46.0], [173.63, -46.3], [174.03, -46.47], [174.25, -47.0], [174.03, -47.53], [173.5, -47.75], [173.25, -47.65], [173.0, -47.75], [172.75, -47.65], [172.68, -47.68], [172.53, -48.03], [172.18, -48.18], [172.15, -48.25], [172.18, -48.32], [172.25, -48.35], [172.5, -48.25], [172.75, -48.35], [173.0, -48.25], [173.53, -48.47], [173.75, -49.0], [173.53, -49.53], [173.18, -49.68], [173.03, -50.03], [172.5, -50.25], [172.25, -50.15], [172.0, -50.25], [171.75, -50.15], [171.5, -50.25], [170.97, -50.03], [170.82, -49.68], [170.47, -49.53], [170.25, -49.0], [170.35, -48.75], [170.3, -48.62], [170.0, -48.75], [169.47, -48.53], [169.32, -48.18], [168.97, -48.03], [168.82, -47.68], [168.47, -47.53]]]]}, "2022-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.47, -47.53], [168.25, -47.0], [168.47, -46.47], [169.0, -46.25], [169.25, -46.35], [169.32, -46.32], [169.47, -45.97], [170.0, -45.75], [170.25, -45.85], [170.32, -45.82], [170.47, -45.47], [171.0, -45.25], [171.25, -45.35], [171.5, -45.25], [171.75, -45.35], [172.0, -45.25], [172.25, -45.35], [172.5, -45.25], [172.75, -45.35], [173.0, -45.25], [173.53, -45.47], [173.75, -46.0], [173.63, -46.3], [174.03, -46.47], [174.25, -47.0], [174.03, -47.53], [173.5, -47.75], [173.25, -47.65], [173.0, -47.75], [172.75, -47.65], [172.68, -47.68], [172.53, -48.03], [172.18, -48.18], [172.15, -48.25], [172.18, -48.32], [172.25, -48.35], [172.5, -48.25], [172.75, -48.35], [173.0, -48.25], [173.53, -48.47], [173.75, -49.0], [173.53, -49.53], [173.18, -49.68], [173.03, -50.03], [172.5, -50.25], [172.25, -50.15], [172.0, -50.25], [171.75, -50.15], [171.5, -50.25], [170.97, -50.03], [170.82, -49.68], [170.47, -49.53], [170.25, -49.0], [170.35, -48.75], [170.3, -48.62], [170.0, -48.75], [169.47, -48.53], [169.32, -48.18], [168.97, -48.03], [168.82, -47.68], [168.47, -47.53]]]]}, "2022-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.47, -47.53], [168.25, -47.0], [168.47, -46.47], [169.0, -46.25], [169.25, -46.35], [169.32, -46.32], [169.47, -45.97], [170.0, -45.75], [170.25, -45.85], [170.32, -45.82], [170.47, -45.47], [171.0, -45.25], [171.25, -45.35], [171.5, -45.25], [171.75, -45.35], [172.0, -45.25], [172.25, -45.35], [172.5, -45.25], [172.75, -45.35], [173.0, -45.25], [173.53, -45.47], [173.75, -46.0], [173.63, -46.3], [174.03, -46.47], [174.25, -47.0], [174.03, -47.53], [173.5, -47.75], [173.25, -47.65], [173.0, -47.75], [172.75, -47.65], [172.68, -47.68], [172.53, -48.03], [172.18, -48.18], [172.15, -48.25], [172.18, -48.32], [172.25, -48.35], [172.5, -48.25], [172.75, -48.35], [173.0, -48.25], [173.53, -48.47], [173.75, -49.0], [173.53, -49.53], [173.18, -49.68], [173.03, -50.03], [172.5, -50.25], [172.25, -50.15], [172.0, -50.25], [171.75, -50.15], [171.5, -50.25], [170.97, -50.03], [170.82, -49.68], [170.47, -49.53], [170.25, -49.0], [170.35, -48.75], [170.3, -48.62], [170.0, -48.75], [169.47, -48.53], [169.32, -48.18], [168.97, -48.03], [168.82, -47.68], [168.47, -47.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.947513958226409}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9991018956939166}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.516735683571824, 12.77677969684413, 12.543417110744087]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.856142174906722, 13.964881286222123, 14.208333939683087]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.853185788068575, 2.1879714168181623, 1.956148482195013]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.2835877614620017, 2.4686929329506597, 2.947513958226409]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.449173536435309, 1.7197401954045237, 1.5670916674073871]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7364519067584807, 2.0034396994592227, 2.378876949499102]}}