{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:49:16.071567", "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": "2011-Dec-28_to_2011-Dec-31_173.0_-35.5"}, "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": 2011120002776}, "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": "December 28 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 31 2011"}, "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": 60022.85256255209}, "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": ["South Pacific Ocean", "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": -35.5}, "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": 173.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "173.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 171.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 174.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -33.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.25, -33.5], [171.47, -32.97], [172.0, -32.75], [172.25, -32.85], [172.5, -32.75], [172.75, -32.85], [173.0, -32.75], [173.53, -32.97], [173.68, -33.32], [174.03, -33.47], [174.25, -34.0], [174.15, -34.25], [174.25, -34.5], [174.03, -35.03], [173.68, -35.18], [173.65, -35.25], [173.75, -35.5], [173.65, -35.75], [173.75, -36.0], [173.65, -36.25], [173.68, -36.32], [174.03, -36.47], [174.25, -37.0], [174.03, -37.53], [173.5, -37.75], [172.97, -37.53], [172.82, -37.18], [172.75, -37.15], [172.5, -37.25], [171.97, -37.03], [171.75, -36.5], [171.85, -36.25], [171.75, -36.0], [171.85, -35.75], [171.75, -35.5], [171.97, -34.97], [172.32, -34.82], [172.35, -34.75], [172.32, -34.68], [171.97, -34.53], [171.82, -34.18], [171.47, -34.03], [171.25, -33.5]]]]}, "2011-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[171.25, -33.5], [171.47, -32.97], [172.0, -32.75], [172.25, -32.85], [172.5, -32.75], [172.75, -32.85], [173.0, -32.75], [173.53, -32.97], [173.68, -33.32], [174.03, -33.47], [174.25, -34.0], [174.15, -34.25], [174.25, 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"MultiPolygon", "coordinates": [[[[172.97, -36.97], [173.5, -36.75], [173.75, -36.85], [174.0, -36.75], [174.25, -36.85], [174.5, -36.75], [175.03, -36.97], [175.25, -37.5], [175.15, -37.75], [175.25, -38.0], [175.15, -38.25], [175.25, -38.5], [175.03, -39.03], [174.5, -39.25], [174.25, -39.15], [174.0, -39.25], [173.47, -39.03], [173.32, -38.68], [172.97, -38.53], [172.75, -38.0], [172.85, -37.75], [172.75, -37.5], [172.97, -36.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.1984603234282645}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4952223910100244}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.87473686095285, 19.692508106557227, 19.80985676171423, 19.485291433748387]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.75763656405644, 20.74854479047798, 20.73515004009147, 19.72506093581069]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.3542727634632605, 1.4671284676482823, 1.5227246376765013, 1.7788966761893477]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.5077895851352423, 1.8100551947438248, 1.8559513503425364, 2.1984603234282645]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.363204446297758, 1.3884316465387274, 1.455992502951412, 1.4600772398429878]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5420733435386604, 1.5961160906504737, 1.6335249474819085, 1.5985394125595231]}}