{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:00:18.947467", "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": "2024-Jul-24_to_2024-Jul-29_174.0_-42.5"}, "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": 2024070002411}, "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": "July 24 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 29 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 60380.651874071045}, "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", "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": -42.5}, "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": 174.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "174.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 172.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 176.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -42.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -39.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[172.47, -41.47], [173.0, -41.25], [172.75, -41.15], [172.5, -41.25], [171.97, -41.03], [171.75, -40.5], [171.97, -39.97], [172.32, -39.82], [172.47, -39.47], [172.82, -39.32], [172.97, -38.97], [173.5, -38.75], [174.03, -38.97], [174.18, -39.32], [174.53, -39.47], [174.68, -39.82], [175.03, -39.97], [175.18, -40.32], [175.53, -40.47], [175.68, -40.82], [175.75, -40.85], [176.0, -40.75], [176.53, -40.97], [176.75, -41.5], [176.53, -42.03], [176.18, -42.18], [176.15, -42.25], [176.25, -42.5], [176.03, -43.03], [175.5, -43.25], [175.25, -43.15], [175.0, -43.25], [174.75, -43.15], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.75, -43.15], [173.5, -43.25], [172.97, -43.03], [172.82, -42.68], [172.47, -42.53], [172.25, -42.0], [172.47, -41.47]], [[173.25, -41.35], [173.38, -41.3], [173.32, -41.18], [173.25, -41.15], [173.0, -41.25], [173.25, -41.35]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["New-Zealand"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-07-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[173.0, -42.75], [172.47, -42.53], [172.25, -42.0], [172.47, -41.47], [173.0, -41.25], [173.53, -41.47], [173.7, -41.87], [173.82, -41.82], [173.97, -41.47], [174.5, -41.25], [175.03, -41.47], [175.25, -42.0], [175.15, -42.25], [175.25, -42.5], [175.03, -43.03], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.47, -43.03], [173.3, -42.62], [173.0, -42.75]]]]}, "2024-07-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -42.53], [172.25, -42.0], [172.47, -41.47], [173.0, -41.25], [173.25, -41.35], [173.5, -41.25], [174.0, -41.46], [174.5, -41.25], [175.03, -41.47], [175.25, -42.0], [175.15, -42.25], [175.25, -42.5], [175.03, -43.03], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.47, -43.03], [173.32, -42.68], [173.25, -42.65], [173.0, -42.75], [172.47, -42.53]]], [[[172.75, -39.5], [172.97, -38.97], [173.5, -38.75], [174.03, -38.97], [174.18, -39.32], [174.53, -39.47], [174.75, -40.0], [174.53, -40.53], [174.0, -40.75], [173.47, -40.53], [173.32, -40.18], [172.97, -40.03], [172.75, -39.5]]]]}, "2024-07-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -39.47], [172.82, -39.32], [172.97, -38.97], [173.5, -38.75], [174.03, -38.97], [174.18, -39.32], [174.53, -39.47], [174.68, -39.82], [175.03, -39.97], [175.18, -40.32], [175.53, -40.47], [175.7, -40.87], [176.0, -40.75], [176.53, -40.97], [176.75, -41.5], [176.53, -42.03], [176.18, -42.18], [176.15, -42.25], [176.25, -42.5], [176.03, -43.03], [175.5, -43.25], [175.25, -43.15], [175.0, -43.25], [174.75, -43.15], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.47, -43.03], [173.32, -42.68], [173.25, -42.65], [173.0, -42.75], [172.47, -42.53], [172.25, -42.0], [172.47, -41.47], [173.0, -41.25], [172.75, -41.15], [172.5, -41.25], [171.97, -41.03], [171.75, -40.5], [171.97, -39.97], [172.32, -39.82], [172.47, -39.47]], [[173.25, -41.35], [173.5, -41.25], [173.25, -41.15], [173.0, -41.25], [173.25, -41.35]], [[173.75, -41.35], [173.88, -41.3], [173.82, -41.18], [173.75, -41.15], [173.5, -41.25], [173.75, -41.35]]]]}, "2024-07-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -39.47], [172.82, -39.32], [172.97, -38.97], [173.5, -38.75], [174.03, -38.97], [174.18, -39.32], [174.53, -39.47], [174.68, -39.82], [175.03, -39.97], [175.18, -40.32], [175.53, -40.47], [175.68, -40.82], [175.75, -40.85], [176.0, -40.75], [176.53, -40.97], [176.75, -41.5], [176.53, -42.03], [176.18, -42.18], [176.15, -42.25], [176.25, -42.5], [176.03, -43.03], [175.5, -43.25], [175.25, -43.15], [175.0, -43.25], [174.75, -43.15], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.75, -43.15], [173.5, -43.25], [172.97, -43.03], [172.82, -42.68], [172.47, -42.53], [172.25, -42.0], [172.47, -41.47], [173.0, -41.25], [172.75, -41.15], [172.5, -41.25], [171.97, -41.03], [171.75, -40.5], [171.97, -39.97], [172.32, -39.82], [172.47, -39.47]], [[173.25, -41.35], [173.38, -41.3], [173.32, -41.18], [173.25, -41.15], [173.0, -41.25], [173.25, -41.35]]]]}, "2024-07-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -39.47], [172.82, -39.32], [172.97, -38.97], [173.5, -38.75], [174.03, -38.97], [174.18, -39.32], [174.53, -39.47], [174.68, -39.82], [175.03, -39.97], [175.18, -40.32], [175.53, -40.47], [175.68, -40.82], [175.75, -40.85], [176.0, -40.75], [176.53, -40.97], [176.75, -41.5], [176.53, -42.03], [176.18, -42.18], [176.15, -42.25], [176.25, -42.5], [176.03, -43.03], [175.5, -43.25], [175.25, -43.15], [175.0, -43.25], [174.75, -43.15], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.75, -43.15], [173.5, -43.25], [172.97, -43.03], [172.82, -42.68], [172.47, -42.53], [172.25, -42.0], [172.47, -41.47], [173.0, -41.25], [172.75, -41.15], [172.5, -41.25], [171.97, -41.03], [171.75, -40.5], [171.97, -39.97], [172.32, -39.82], [172.47, -39.47]], [[173.25, -41.35], [173.38, -41.3], [173.32, -41.18], [173.25, -41.15], [173.0, -41.25], [173.25, -41.35]]]]}, "2024-07-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[172.47, -39.47], [172.82, -39.32], [172.97, -38.97], [173.5, -38.75], [174.03, -38.97], [174.18, -39.32], [174.53, -39.47], [174.68, -39.82], [175.03, -39.97], [175.18, -40.32], [175.53, -40.47], [175.68, -40.82], [175.75, -40.85], [176.0, -40.75], [176.53, -40.97], [176.75, -41.5], [176.53, -42.03], [176.18, -42.18], [176.15, -42.25], [176.25, -42.5], [176.03, -43.03], [175.5, -43.25], [175.25, -43.15], [175.0, -43.25], [174.75, -43.15], [174.5, -43.25], [174.25, -43.15], [174.0, -43.25], [173.75, -43.15], [173.5, -43.25], [172.97, -43.03], [172.82, -42.68], [172.47, -42.53], [172.25, -42.0], [172.47, -41.47], [173.0, -41.25], [172.75, -41.15], [172.5, -41.25], [171.97, -41.03], [171.75, -40.5], [171.97, -39.97], [172.32, -39.82], [172.47, -39.47]], [[173.25, -41.35], [173.38, -41.3], [173.32, -41.18], [173.25, -41.15], [173.0, -41.25], [173.25, -41.35]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.199696241028107}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.147001937244598}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.314407462639679, 9.687184454831481, 11.816226430627808, 11.697043563591478, 12.123132979063314, 11.981616770083747]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.903257544472751, 13.62506110680539, 13.841323975452099, 13.569838263593795, 14.13331874902343, 14.019760792534782]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.140783707756995, 2.077944454352892, 2.087050106881874, 1.9852102888939145, 2.346635117537252, 2.179437927078484]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.102192530730065, 3.295036714750495, 5.199696241028107, 4.069031449148895, 3.78959773550082, 4.3140480220773725]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3219664357075653, 1.2683405233213167, 1.4489262215724381, 1.371012124695473, 1.6517265518640483, 1.5087115458431133]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5760470098009491, 1.3669593907331279, 2.0222425660838317, 1.7084287331570354, 1.947970850326842, 1.7240788482196299]}}