{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:07.822603", "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": "2023-May-07_to_2023-May-10_150.5_-22.5"}, "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": 2023050000286}, "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": "May 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 10 2023"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 59651.374159269675}, "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": ["Australia"]}, "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": ["Coral 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": -22.5}, "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": 150.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "150.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 149.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 153.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -25.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -22.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[153.53, -25.53], [153.0, -25.75], [152.47, -25.53], [152.32, -25.18], [151.97, -25.03], [151.82, -24.68], [151.47, -24.53], [151.32, -24.18], [151.25, -24.15], [151.0, -24.25], [150.47, -24.03], [150.25, -23.5], [150.35, -23.25], [150.32, -23.18], [149.97, -23.03], [149.82, -22.68], [149.75, -22.65], [149.5, -22.75], [148.97, -22.53], [148.75, -22.0], [148.97, -21.47], [149.5, -21.25], [149.75, -21.35], [150.0, -21.25], [150.25, -21.35], [150.5, -21.25], [151.03, -21.47], [151.18, -21.82], [151.25, -21.85], [151.5, -21.75], [152.03, -21.97], [152.18, -22.32], [152.25, -22.35], [152.5, -22.25], [152.75, -22.35], [153.0, -22.25], [153.53, -22.47], [153.75, -23.0], [153.65, -23.25], [153.75, -23.5], [153.65, -23.75], [153.75, -24.0], [153.54, -24.5], [153.75, -25.0], [153.53, -25.53]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[152.47, -24.47], [153.0, -24.25], [153.53, -24.47], [153.75, -25.0], [153.53, -25.53], [153.0, -25.75], [152.47, -25.53], [152.25, -25.0], [152.47, -24.47]]]]}, "2023-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.5, -22.75], [148.97, -22.53], [148.75, -22.0], [148.97, -21.47], [149.5, -21.25], [149.75, -21.35], [150.0, -21.25], [150.25, -21.35], [150.5, -21.25], [151.03, -21.47], [151.18, -21.82], [151.25, -21.85], [151.5, -21.75], [152.03, -21.97], [152.18, -22.32], [152.25, -22.35], [152.5, -22.25], [152.75, -22.35], [153.0, -22.25], [153.53, -22.47], [153.75, -23.0], [153.65, -23.25], [153.75, -23.5], [153.65, -23.75], [153.75, -24.0], [153.54, -24.5], [153.75, -25.0], [153.53, -25.53], [153.0, -25.75], [152.47, -25.53], [152.32, -25.18], [151.97, -25.03], [151.82, -24.68], [151.47, -24.53], [151.32, -24.18], [151.25, -24.15], [151.0, -24.25], [150.47, -24.03], [150.25, -23.5], [150.35, -23.25], [150.32, -23.18], [149.97, -23.03], [149.82, -22.68], [149.75, -22.65], [149.5, -22.75]]]]}, "2023-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.5, -22.75], [148.97, -22.53], [148.75, -22.0], [148.97, -21.47], [149.5, -21.25], [149.75, -21.35], [150.0, -21.25], [150.25, -21.35], [150.5, -21.25], [151.03, -21.47], [151.18, -21.82], [151.25, -21.85], [151.5, -21.75], [152.03, -21.97], [152.18, -22.32], [152.25, -22.35], [152.5, -22.25], [152.75, -22.35], [153.0, -22.25], [153.53, -22.47], [153.75, -23.0], [153.65, -23.25], [153.75, -23.5], [153.65, -23.75], [153.75, -24.0], [153.54, -24.5], [153.75, -25.0], [153.53, -25.53], [153.0, -25.75], [152.47, -25.53], [152.32, -25.18], [151.97, -25.03], [151.82, -24.68], [151.47, -24.53], [151.32, -24.18], [151.25, -24.15], [151.0, -24.25], [150.47, -24.03], [150.25, -23.5], [150.35, -23.25], [150.32, -23.18], [149.97, -23.03], [149.82, -22.68], [149.75, -22.65], [149.5, -22.75]]]]}, "2023-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.5, -22.75], [148.97, -22.53], [148.75, -22.0], [148.97, -21.47], [149.5, -21.25], [149.75, -21.35], [150.0, -21.25], [150.25, -21.35], [150.5, -21.25], [151.03, -21.47], [151.18, -21.82], [151.25, -21.85], [151.5, -21.75], [152.03, -21.97], [152.18, -22.32], [152.25, -22.35], [152.5, -22.25], [152.75, -22.35], [153.0, -22.25], [153.53, -22.47], [153.75, -23.0], [153.65, -23.25], [153.75, -23.5], [153.65, -23.75], [153.75, -24.0], [153.53, -24.53], [153.18, -24.68], [153.03, -25.03], [152.5, -25.25], [151.97, -25.03], [151.82, -24.68], [151.47, -24.53], [151.32, -24.18], [151.25, -24.15], [151.0, -24.25], [150.47, -24.03], [150.25, -23.5], [150.35, -23.25], [150.32, -23.18], [149.97, -23.03], [149.82, -22.68], [149.75, -22.65], [149.5, -22.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.194728007509127}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.4964150765214903}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.31496566873284, 18.978466699518492, 19.76844382405892, 20.865635233887588]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.31496566873284, 17.32739097845871, 16.157832879807586, 19.24470967279734]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.5216508105123125, -3.4640929704003236, -2.581534072059813, -1.4397165559339355]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5216508105123125, -4.305732846184867, -5.194728007509127, -1.6897325002708499]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.451542400570822, -3.71300262506733, -2.737941505391439, -1.551508396329788]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.451542400570822, -4.005826119011402, -4.428585136039865, -1.874982477958392]}}