{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:30.459116", "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": "2026-Apr-05_to_2026-Apr-08_166.0_-45.5"}, "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": 2026040001338}, "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 05 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 08 2026"}, "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": 149456.44074688602}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "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": ["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": -45.5}, "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": 166.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "166.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 163.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 168.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -48.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -41.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -44.0], [162.97, -43.47], [163.32, -43.32], [163.47, -42.97], [163.82, -42.82], [163.97, -42.47], [164.5, -42.25], [164.75, -42.35], [165.0, -42.25], [165.25, -42.35], [165.32, -42.32], [165.47, -41.97], [166.0, -41.75], [166.25, -41.85], [166.32, -41.82], [166.47, -41.47], [167.0, -41.25], [167.25, -41.35], [167.5, -41.25], [167.75, -41.35], [168.0, -41.25], [168.53, -41.47], [168.75, -42.0], [168.65, -42.25], [168.75, -42.5], [168.65, -42.75], [168.75, -43.0], [168.53, -43.53], [168.13, -43.7], [168.18, -43.82], [168.53, -43.97], [168.75, -44.5], [168.53, -45.03], [168.0, -45.25], [167.7, -45.12], [167.53, -45.53], [167.18, -45.68], [167.15, -45.75], [167.25, -46.0], [167.03, -46.53], [166.5, -46.75], [166.25, -46.65], [166.0, -46.75], [165.75, -46.65], [165.5, -46.75], [165.25, -46.65], [165.0, -46.75], [164.47, -46.53], [164.32, -46.18], [164.25, -46.15], [164.0, -46.25], [163.47, -46.03], [163.25, -45.5], [163.35, -45.25], [163.25, -45.0], [163.35, -44.75], [163.32, -44.68], [162.97, -44.53], [162.75, -44.0]]]]}, "2026-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -44.0], [162.97, -43.47], [163.32, -43.32], [163.47, -42.97], [163.82, -42.82], [163.97, -42.47], [164.5, -42.25], [164.75, -42.35], [165.0, -42.25], [165.25, -42.35], [165.32, -42.32], [165.47, -41.97], [166.0, -41.75], [166.25, -41.85], [166.32, -41.82], [166.47, -41.47], [167.0, -41.25], [167.25, -41.35], [167.5, -41.25], [167.75, -41.35], [168.0, -41.25], [168.53, -41.47], [168.75, -42.0], [168.65, -42.25], [168.75, -42.5], [168.65, -42.75], [168.75, -43.0], [168.53, -43.53], [168.13, -43.7], [168.18, -43.82], [168.53, -43.97], [168.75, -44.5], [168.53, -45.03], [168.0, -45.25], [167.7, -45.12], [167.53, -45.53], [167.18, -45.68], [167.15, -45.75], [167.25, -46.0], [167.03, -46.53], [166.68, -46.68], [166.53, -47.03], [166.18, -47.18], [166.15, -47.25], [166.25, -47.5], [166.15, -47.75], [166.25, -48.0], [166.03, -48.53], [165.68, -48.68], [165.53, -49.03], [165.0, -49.25], [164.75, -49.15], [164.5, -49.25], [164.25, -49.15], [164.0, -49.25], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5], [162.97, -47.97], [163.5, -47.75], [163.75, -47.85], [164.0, -47.75], [164.25, -47.85], [164.38, -47.8], [164.25, -47.5], [164.35, -47.25], [164.25, -47.0], [164.35, -46.75], [164.25, -46.5], [164.35, -46.25], [164.32, -46.18], [164.25, -46.15], [164.0, -46.25], [163.47, -46.03], [163.25, -45.5], [163.35, -45.25], [163.25, -45.0], [163.35, -44.75], [163.32, -44.68], [162.97, -44.53], [162.75, -44.0]]]]}, "2026-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -44.0], [162.97, -43.47], [163.32, -43.32], [163.47, -42.97], [163.82, -42.82], [163.97, -42.47], [164.5, -42.25], [164.75, -42.35], [165.0, -42.25], [165.25, -42.35], [165.32, -42.32], [165.47, -41.97], [166.0, -41.75], [166.25, -41.85], [166.32, -41.82], [166.47, -41.47], [167.0, -41.25], [167.25, -41.35], [167.5, -41.25], [167.75, -41.35], [168.0, -41.25], [168.53, -41.47], [168.75, -42.0], [168.65, -42.25], [168.75, -42.5], [168.65, -42.75], [168.75, -43.0], [168.53, -43.53], [168.13, -43.7], [168.18, -43.82], [168.53, -43.97], [168.75, -44.5], [168.53, -45.03], [168.0, -45.25], [167.7, -45.12], [167.53, -45.53], [167.18, -45.68], [167.15, -45.75], [167.25, -46.0], [167.03, -46.53], [166.68, -46.68], [166.53, -47.03], [166.18, -47.18], [166.15, -47.25], [166.25, -47.5], [166.15, -47.75], [166.25, -48.0], [166.03, -48.53], [165.68, -48.68], [165.53, -49.03], [165.0, -49.25], [164.75, -49.15], [164.5, -49.25], [164.25, -49.15], [164.0, -49.25], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5], [162.97, -47.97], [163.5, -47.75], [163.75, -47.85], [164.0, -47.75], [164.25, -47.85], [164.38, -47.8], [164.25, -47.5], [164.35, -47.25], [164.25, -47.0], [164.35, -46.75], [164.25, -46.5], [164.35, -46.25], [164.32, -46.18], [164.25, -46.15], [164.0, -46.25], [163.47, -46.03], [163.25, -45.5], [163.35, -45.25], [163.25, -45.0], [163.35, -44.75], [163.32, -44.68], [162.97, -44.53], [162.75, -44.0]]]]}, "2026-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[162.75, -48.5], [162.97, -47.97], [163.5, -47.75], [163.75, -47.85], [164.0, -47.75], [164.25, -47.85], [164.38, -47.8], [164.25, -47.5], [164.35, -47.25], [164.25, -47.0], [164.35, -46.75], [164.25, -46.5], [164.47, -45.97], [164.82, -45.82], [164.97, -45.47], [165.32, -45.32], [165.47, -44.97], [166.0, -44.75], [166.53, -44.97], [166.75, -45.5], [166.65, -45.75], [166.75, -46.0], [166.65, -46.25], [166.75, -46.5], [166.53, -47.03], [166.18, -47.18], [166.15, -47.25], [166.25, -47.5], [166.15, -47.75], [166.25, -48.0], [166.03, -48.53], [165.68, -48.68], [165.53, -49.03], [165.0, -49.25], [164.75, -49.15], [164.5, -49.25], [164.25, -49.15], [164.0, -49.25], [163.75, -49.15], [163.5, -49.25], [162.97, -49.03], [162.75, -48.5]]], [[[167.25, -41.35], [167.5, -41.25], [167.75, -41.35], [168.0, -41.25], [168.53, -41.47], [168.75, -42.0], [168.65, -42.25], [168.75, -42.5], [168.53, -43.03], [168.0, -43.25], [167.75, -43.15], [167.5, -43.25], [167.25, -43.15], [167.0, -43.25], [166.75, -43.15], [166.5, -43.25], [165.97, -43.03], [165.75, -42.5], [165.97, -41.97], [166.32, -41.82], [166.47, -41.47], [167.0, -41.25], [167.25, -41.35]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.282417931272789}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.38588297563801}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [16.05417803809752, 15.979154953302157, 15.42758630490772, 14.644150150183464]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.254382069905603, 17.63297551472982, 17.11578521728518, 17.082182820638025]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.2757793498419483, 2.7505113785536746, 2.236570954696165, 2.0006233879270856]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.261221930948693, 4.282417931272789, 3.2462543042749985, 2.1968989855161]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5795201911389614, 1.8724202671468897, 1.576971118509228, 1.4153780316252207]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0954037032878907, 2.5925149229593107, 2.270483816127385, 1.5603793642800614]}}