{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:10.597774", "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-Mar-28_to_2022-Mar-30_167.0_-47.5"}, "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": 2022030002710}, "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": "March 28 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 30 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": 116430.35350659868}, "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", "Puysegur Bank", "Tasman Sea"]}, "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": -47.5}, "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": 167.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "167.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 163.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 168.5}, "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": [[[[162.75, -47.5], [162.97, -46.97], [163.5, -46.75], [163.75, -46.85], [163.88, -46.8], [163.82, -46.68], [163.47, -46.53], [163.25, -46.0], [163.47, -45.47], [164.0, -45.25], [164.25, -45.35], [164.5, -45.25], [164.75, -45.35], [165.0, -45.25], [165.25, -45.35], [165.5, -45.25], [165.75, -45.35], [166.0, -45.25], [166.53, -45.47], [166.68, -45.82], [166.75, -45.85], [167.0, -45.75], [167.53, -45.97], [167.68, -46.32], [168.03, -46.47], [168.18, -46.82], [168.53, -46.97], [168.68, -47.32], [169.03, -47.47], [169.25, -48.0], [169.03, -48.53], [168.68, -48.68], [168.53, -49.03], [168.0, -49.25], [167.75, -49.15], [167.5, -49.25], [167.25, -49.15], [167.18, -49.18], [167.03, -49.53], [166.68, -49.68], [166.53, -50.03], [166.0, -50.25], [165.75, -50.15], [165.5, -50.25], [165.25, -50.15], [165.0, -50.25], [164.47, -50.03], [164.32, -49.68], [163.97, -49.53], [163.82, -49.18], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5], [162.85, -48.25], [162.75, -48.0], [162.85, -47.75], [162.75, -47.5]]]]}}, "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": {"2022-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -48.0], [162.85, -47.75], [162.75, -47.5], [162.97, -46.97], [163.5, -46.75], [163.75, -46.85], [163.88, -46.8], [163.82, -46.68], [163.47, -46.53], [163.25, -46.0], [163.47, -45.47], [164.0, -45.25], [164.25, -45.35], [164.5, -45.25], [164.75, -45.35], [165.0, -45.25], [165.25, -45.35], [165.5, -45.25], [165.75, -45.35], [166.0, -45.25], [166.53, -45.47], [166.68, -45.82], [166.75, -45.85], [167.0, -45.75], [167.53, -45.97], [167.68, -46.32], [168.03, -46.47], [168.18, -46.82], [168.53, -46.97], [168.68, -47.32], [169.03, -47.47], [169.25, -48.0], [169.03, -48.53], [168.68, -48.68], [168.53, -49.03], [168.0, -49.25], [167.75, -49.15], [167.5, -49.25], [167.25, -49.15], [167.18, -49.18], [167.03, -49.53], [166.68, -49.68], [166.53, -50.03], [166.0, -50.25], [165.75, -50.15], [165.5, -50.25], [165.25, -50.15], [165.0, -50.25], [164.47, -50.03], [164.32, -49.68], [163.97, -49.53], [163.82, -49.18], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5], [162.85, -48.25], [162.75, -48.0]]]]}, "2022-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -48.0], [162.85, -47.75], [162.75, -47.5], [162.97, -46.97], [163.5, -46.75], [163.75, -46.85], [163.88, -46.8], [163.82, -46.68], [163.47, -46.53], [163.25, -46.0], [163.47, -45.47], [164.0, -45.25], [164.25, -45.35], [164.5, -45.25], [164.75, -45.35], [165.0, -45.25], [165.25, -45.35], [165.5, -45.25], [165.75, -45.35], [166.0, -45.25], [166.53, -45.47], [166.68, -45.82], [166.75, -45.85], [167.0, -45.75], [167.53, -45.97], [167.68, -46.32], [168.03, -46.47], [168.18, -46.82], [168.53, -46.97], [168.68, -47.32], [169.03, -47.47], [169.25, -48.0], [169.03, -48.53], [168.68, -48.68], [168.53, -49.03], [168.0, -49.25], [167.75, -49.15], [167.5, -49.25], [167.25, -49.15], [167.18, -49.18], [167.03, -49.53], [166.68, -49.68], [166.53, -50.03], [166.0, -50.25], [165.75, -50.15], [165.5, -50.25], [165.25, -50.15], [165.0, -50.25], [164.47, -50.03], [164.32, -49.68], [163.97, -49.53], [163.82, -49.18], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5], [162.85, -48.25], [162.75, -48.0]]]]}, "2022-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -48.0], [162.85, -47.75], [162.75, -47.5], [162.97, -46.97], [163.5, -46.75], [163.75, -46.85], [163.88, -46.8], [163.82, -46.68], [163.47, -46.53], [163.25, -46.0], [163.47, -45.47], [164.0, -45.25], [164.25, -45.35], [164.5, -45.25], [164.75, -45.35], [165.0, -45.25], [165.25, -45.35], [165.5, -45.25], [165.75, -45.35], [166.0, -45.25], [166.53, -45.47], [166.68, -45.82], [166.75, -45.85], [167.0, -45.75], [167.53, -45.97], [167.68, -46.32], [168.03, -46.47], [168.18, -46.82], [168.53, -46.97], [168.68, -47.32], [169.03, -47.47], [169.25, -48.0], [169.03, -48.53], [168.68, -48.68], [168.53, -49.03], [168.0, -49.25], [167.75, -49.15], [167.5, -49.25], [167.25, -49.15], [167.18, -49.18], [167.03, -49.53], [166.68, -49.68], [166.53, -50.03], [166.0, -50.25], [165.75, -50.15], [165.5, -50.25], [165.25, -50.15], [165.0, -50.25], [164.47, -50.03], [164.32, -49.68], [163.97, -49.53], [163.82, -49.18], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5], [162.85, -48.25], [162.75, -48.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.7750195917491283}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.717328562161478}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.497238712824867, 14.981541844845935, 15.050278669819647]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.205282303666138, 17.09155503241385, 16.989412170966318]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.4013155552786247, 2.828674660603192, 2.921995470602617]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.121284027426441, 3.7750195917491283, 3.7077301171387376]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5420833632905417, 1.8381606999414941, 1.955533316313336]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.1725493199435695, 2.305677412830384, 2.3636095272311968]}}