{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:19:36.214270", "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-Apr-09_to_2022-Apr-12_171.0_-34.5"}, "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": 2022040001601}, "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 09 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 12 2022"}, "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": 64976.912563643644}, "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": ["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": -34.5}, "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": 171.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "171.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 170.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 173.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[169.82, -35.82], [169.85, -35.75], [169.75, -35.5], [169.85, -35.25], [169.75, -35.0], [169.97, -34.47], [170.32, -34.32], [170.47, -33.97], [171.0, -33.75], [171.25, -33.85], [171.5, -33.75], [171.75, -33.85], [172.0, -33.75], [172.25, -33.85], [172.5, -33.75], [173.03, -33.97], [173.25, -34.5], [173.03, -35.03], [172.68, -35.18], [172.53, -35.53], [172.18, -35.68], [172.15, -35.75], [172.25, -36.0], [172.15, -36.25], [172.18, -36.32], [172.25, -36.35], [172.32, -36.32], [172.47, -35.97], [173.0, -35.75], [173.25, -35.85], [173.5, -35.75], [174.03, -35.97], [174.25, -36.5], [174.15, -36.75], [174.25, -37.0], [174.03, -37.53], [173.5, -37.75], [173.25, -37.65], [173.0, -37.75], [172.75, -37.65], [172.68, -37.68], [172.53, -38.03], [172.0, -38.25], [171.75, -38.15], [171.5, -38.25], [171.25, -38.15], [171.0, -38.25], [170.47, -38.03], [170.32, -37.68], [169.97, -37.53], [169.82, -37.18], [169.47, -37.03], [169.25, -36.5], [169.47, -35.97], [169.82, -35.82]]]]}}, "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": {"2022-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[169.47, -37.03], [169.25, -36.5], [169.47, -35.97], [169.82, -35.82], [169.85, -35.75], [169.75, -35.5], [169.85, -35.25], [169.75, -35.0], [169.97, -34.47], [170.32, -34.32], [170.47, -33.97], [171.0, -33.75], [171.25, -33.85], [171.5, -33.75], [171.75, -33.85], [172.0, -33.75], [172.25, -33.85], [172.5, -33.75], [173.03, -33.97], [173.25, -34.5], [173.03, -35.03], [172.68, -35.18], [172.53, -35.53], [172.18, -35.68], [172.15, -35.75], [172.25, -36.0], [172.15, -36.25], [172.18, -36.32], [172.25, -36.35], [172.32, -36.32], [172.47, -35.97], [173.0, -35.75], [173.25, -35.85], [173.5, -35.75], [174.03, -35.97], [174.25, -36.5], [174.15, -36.75], [174.25, -37.0], [174.03, -37.53], [173.5, -37.75], [173.25, -37.65], [173.0, -37.75], [172.75, -37.65], [172.68, -37.68], [172.53, -38.03], [172.0, -38.25], [171.75, -38.15], [171.5, -38.25], [171.25, -38.15], [171.0, -38.25], [170.47, -38.03], [170.32, -37.68], [169.97, -37.53], [169.82, -37.18], [169.47, -37.03]]]]}, "2022-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[169.47, -37.03], [169.25, -36.5], [169.47, -35.97], [169.82, -35.82], [169.85, -35.75], [169.75, -35.5], [169.85, -35.25], [169.75, -35.0], [169.97, -34.47], [170.32, -34.32], [170.47, -33.97], [171.0, -33.75], [171.25, -33.85], [171.5, -33.75], [171.75, -33.85], [172.0, -33.75], [172.25, -33.85], [172.5, -33.75], [173.03, -33.97], [173.25, -34.5], [173.03, -35.03], [172.68, -35.18], [172.53, -35.53], [172.18, -35.68], [172.15, -35.75], [172.25, -36.0], [172.15, -36.25], [172.18, -36.32], [172.25, -36.35], [172.32, -36.32], [172.47, -35.97], [173.0, -35.75], [173.25, -35.85], [173.5, -35.75], [174.03, -35.97], [174.25, -36.5], [174.15, -36.75], [174.25, -37.0], [174.03, -37.53], [173.5, -37.75], [173.25, -37.65], [173.0, -37.75], [172.75, -37.65], [172.68, -37.68], [172.53, -38.03], [172.0, -38.25], [171.75, -38.15], [171.5, -38.25], [171.25, -38.15], [171.0, -38.25], [170.47, -38.03], [170.32, -37.68], [169.97, -37.53], [169.82, -37.18], [169.47, -37.03]]]]}, "2022-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[169.47, -37.03], [169.25, -36.5], [169.47, -35.97], [169.82, -35.82], [169.85, -35.75], [169.75, -35.5], [169.85, -35.25], [169.75, -35.0], [169.97, -34.47], [170.32, -34.32], [170.47, -33.97], [171.0, -33.75], [171.25, -33.85], [171.5, -33.75], [171.75, -33.85], [172.0, -33.75], [172.25, -33.85], [172.5, -33.75], [173.03, -33.97], [173.25, -34.5], [173.03, -35.03], [172.68, -35.18], [172.53, -35.53], [172.18, -35.68], [172.15, -35.75], [172.25, -36.0], [172.15, -36.25], [172.18, -36.32], [172.25, -36.35], [172.32, -36.32], [172.47, -35.97], [173.0, -35.75], [173.25, -35.85], [173.5, -35.75], [174.03, -35.97], [174.25, -36.5], [174.15, -36.75], [174.25, -37.0], [174.03, -37.53], [173.5, -37.75], [173.25, -37.65], [173.0, -37.75], [172.75, -37.65], [172.68, -37.68], [172.53, -38.03], [172.0, -38.25], [171.75, -38.15], [171.5, -38.25], [171.25, -38.15], [171.0, -38.25], [170.47, -38.03], [170.32, -37.68], [169.97, -37.53], [169.82, -37.18], [169.47, -37.03]]]]}, "2022-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[170.47, -33.97], [171.0, -33.75], [171.53, -33.97], [171.75, -34.5], [171.53, -35.03], [171.0, -35.25], [170.47, -35.03], [170.25, -34.5], [170.47, -33.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.4804680064505646}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8047296696161537}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.66557427090595, 19.678567397661652, 20.07457401935949, 20.105144517547444]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.10552875468983, 20.187063876319428, 20.932560780115068, 20.105144517547444]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6247137192128775, 1.68553431239823, 2.115493205884965, 1.5043717247782524]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.9089258894621253, 1.8584432996549367, 2.4804680064505646, 1.5043717247782524]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.3133531858199592, 1.3475691796075941, 1.7432261807974248, 1.376232993480402]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4170363333330664, 1.4815391237070776, 2.250773794101277, 1.376232993480402]}}