{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:30.467778", "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_169.5_-43.0"}, "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": 2026040001341}, "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": 71165.84145003434}, "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": -43.0}, "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": 169.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "169.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 168.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 172.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -44.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -40.25}, "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": [[[[168.75, -42.5], [168.85, -42.25], [168.75, -42.0], [168.85, -41.75], [168.75, -41.5], [168.97, -40.97], [169.5, -40.75], [169.75, -40.85], [170.0, -40.75], [170.25, -40.85], [170.32, -40.82], [170.47, -40.47], [171.0, -40.25], [171.25, -40.35], [171.5, -40.25], [171.75, -40.35], [172.0, -40.25], [172.53, -40.47], [172.75, -41.0], [172.53, -41.53], [172.18, -41.68], [172.03, -42.03], [171.68, -42.18], [171.65, -42.25], [171.75, -42.5], [171.65, -42.75], [171.75, -43.0], [171.53, -43.53], [171.0, -43.75], [170.75, -43.65], [170.5, -43.75], [170.25, -43.65], [170.18, -43.68], [170.03, -44.03], [169.5, -44.25], [169.25, -44.15], [169.0, -44.25], [168.47, -44.03], [168.25, -43.5], [168.47, -42.97], [168.82, -42.82], [168.85, -42.75], [168.75, -42.5]]]]}, "2026-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.47, -42.97], [168.82, -42.82], [168.85, -42.75], [168.75, -42.5], [168.85, -42.25], [168.75, -42.0], [168.85, -41.75], [168.75, -41.5], [168.97, -40.97], [169.32, -40.82], [169.47, -40.47], [169.82, -40.32], [169.97, -39.97], [170.5, -39.75], [171.03, -39.97], [171.18, -40.32], [171.25, -40.35], [171.32, -40.32], [171.47, -39.97], [172.0, -39.75], [172.53, -39.97], [172.75, -40.5], [172.65, -40.75], [172.75, -41.0], [172.65, -41.25], [172.75, -41.5], [172.54, -42.0], [172.75, -42.5], [172.53, -43.03], [172.0, -43.25], [171.75, -43.15], [171.68, -43.18], [171.53, -43.53], [171.0, -43.75], [170.75, -43.65], [170.5, -43.75], [170.25, -43.65], [170.18, -43.68], [170.03, -44.03], [169.68, -44.18], [169.53, -44.53], [169.0, -44.75], [168.47, -44.53], [168.25, -44.0], [168.35, -43.75], [168.25, -43.5], [168.47, -42.97]]]]}, "2026-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.47, -42.97], [168.82, -42.82], [168.85, -42.75], [168.75, -42.5], [168.85, -42.25], [168.75, -42.0], [168.85, -41.75], [168.75, -41.5], [168.97, -40.97], [169.32, -40.82], [169.47, -40.47], [169.82, -40.32], [169.97, -39.97], [170.5, -39.75], [171.03, -39.97], [171.18, -40.32], [171.25, -40.35], [171.32, -40.32], [171.47, -39.97], [172.0, -39.75], [172.53, -39.97], [172.75, -40.5], [172.65, -40.75], [172.75, -41.0], [172.65, -41.25], [172.75, -41.5], [172.54, -42.0], [172.75, -42.5], [172.53, -43.03], [172.0, -43.25], [171.75, -43.15], [171.68, -43.18], [171.53, -43.53], [171.0, -43.75], [170.75, -43.65], [170.5, -43.75], [170.25, -43.65], [170.18, -43.68], [170.03, -44.03], [169.68, -44.18], [169.53, -44.53], [169.0, -44.75], [168.47, -44.53], [168.25, -44.0], [168.35, -43.75], [168.25, -43.5], [168.47, -42.97]]]]}, "2026-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[168.85, -42.25], [168.75, -42.0], [168.85, -41.75], [168.75, -41.5], [168.97, -40.97], [169.32, -40.82], [169.47, -40.47], [169.82, -40.32], [169.97, -39.97], [170.5, -39.75], [171.03, -39.97], [171.18, -40.32], [171.25, -40.35], [171.32, -40.32], [171.47, -39.97], [172.0, -39.75], [172.53, -39.97], [172.75, -40.5], [172.54, -41.0], [172.75, -41.5], [172.54, -42.0], [172.75, -42.5], [172.53, 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[18.171130116780603, 18.587483978271507, 18.08917388916018, 18.069568888346396]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.196675337589427, 2.9858466507024595, 2.3225051702615342, 2.4029095207791262]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.9782436020860246, 4.272564510200482, 3.9175288527052885, 3.752999667064387]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4714865787752647, 1.8515957549969204, 1.4133910846068363, 1.5016437247072716]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.7686830366939288, 2.416003478329941, 1.6919921000396116, 1.694504211609009]}}