{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:13.077793", "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-Aug-13_to_2022-Aug-17_143.5_-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": 2022080000591}, "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": "August 13 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 17 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 74810.22067425636}, "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": []}, "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": 143.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[143.0, -23.04], [142.5, -23.25], [141.97, -23.03], [141.75, -22.5], [141.85, -22.25], [141.75, -22.0], [141.97, -21.47], [142.32, -21.32], [142.47, -20.97], [143.0, -20.75], [142.47, -20.53], [142.32, -20.18], [141.97, -20.03], [141.75, -19.5], [141.85, -19.25], [141.75, -19.0], [141.97, -18.47], [142.5, -18.25], [143.03, -18.47], [143.18, -18.82], [143.53, -18.97], [143.68, -19.32], [143.75, -19.35], [144.0, -19.25], [144.53, -19.47], [144.68, -19.82], [145.03, -19.97], [145.25, -20.5], [145.04, -21.0], [145.18, -21.32], [145.53, -21.47], [145.75, -22.0], [145.65, -22.25], [145.75, -22.5], [145.65, -22.75], [145.75, -23.0], [145.53, -23.53], [145.0, -23.75], [144.75, -23.65], [144.5, -23.75], [143.97, -23.53], [143.82, -23.18], [143.75, -23.15], [143.5, -23.25], [143.0, -23.04]], [[143.25, -20.85], [143.32, -20.82], [143.35, -20.75], [143.32, -20.68], [143.25, -20.65], [143.0, -20.75], [143.25, -20.85]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "C.Australia", "E.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.47, -22.53], [142.25, -22.0], [142.47, -21.47], [143.0, -21.25], [143.53, -21.47], [143.68, -21.82], [144.03, -21.97], [144.25, -22.5], [144.03, -23.03], [143.5, -23.25], [142.97, -23.03], [142.82, -22.68], [142.47, -22.53]]]]}, "2022-08-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -22.0], [141.97, -21.47], [142.32, -21.32], [142.47, -20.97], [143.0, -20.75], [143.25, -20.85], [143.32, -20.82], [143.35, -20.75], [143.25, -20.5], [143.47, -19.97], [144.0, -19.75], [144.25, -19.85], [144.5, -19.75], [145.03, -19.97], [145.25, -20.5], [145.04, -21.0], [145.18, -21.32], [145.53, -21.47], [145.75, -22.0], [145.65, -22.25], [145.75, -22.5], [145.65, -22.75], [145.75, -23.0], [145.53, -23.53], [145.0, -23.75], [144.75, -23.65], [144.5, -23.75], [143.97, -23.53], [143.82, -23.18], [143.75, -23.15], [143.5, -23.25], [143.0, -23.04], [142.5, -23.25], [141.97, -23.03], [141.75, -22.5], [141.85, -22.25], [141.75, -22.0]]]]}, "2022-08-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -22.0], [141.97, -21.47], [142.32, -21.32], [142.47, -20.97], [143.0, -20.75], [142.47, -20.53], [142.32, -20.18], [141.97, -20.03], [141.75, -19.5], [141.85, -19.25], [141.75, -19.0], [141.97, -18.47], [142.5, -18.25], [143.03, -18.47], [143.18, -18.82], [143.53, -18.97], [143.68, -19.32], [143.75, -19.35], [144.0, -19.25], [144.53, -19.47], [144.68, -19.82], [145.03, -19.97], [145.25, -20.5], [145.04, -21.0], [145.18, -21.32], [145.53, -21.47], [145.75, -22.0], [145.65, -22.25], [145.75, -22.5], [145.65, -22.75], [145.75, -23.0], [145.53, -23.53], [145.0, -23.75], [144.75, -23.65], [144.5, -23.75], [143.97, -23.53], [143.82, -23.18], [143.75, -23.15], [143.5, -23.25], [143.0, -23.04], [142.5, -23.25], [141.97, -23.03], [141.75, -22.5], [141.85, -22.25], [141.75, -22.0]], [[143.25, -20.85], [143.32, -20.82], [143.35, -20.75], [143.32, -20.68], [143.25, -20.65], [143.0, -20.75], [143.25, -20.85]]]]}, "2022-08-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -22.0], [141.97, -21.47], [142.32, -21.32], [142.47, -20.97], [143.0, -20.75], [142.47, -20.53], [142.32, -20.18], [141.97, -20.03], [141.75, -19.5], [141.85, -19.25], [141.75, -19.0], [141.97, -18.47], [142.5, -18.25], [143.03, -18.47], [143.18, -18.82], [143.53, -18.97], [143.68, -19.32], [143.75, -19.35], [144.0, -19.25], [144.53, -19.47], [144.68, -19.82], [145.03, -19.97], [145.25, -20.5], [145.04, -21.0], [145.18, -21.32], [145.53, -21.47], [145.75, -22.0], [145.65, -22.25], [145.75, -22.5], [145.65, -22.75], [145.75, -23.0], [145.53, -23.53], [145.0, -23.75], [144.75, -23.65], [144.5, -23.75], [143.97, -23.53], [143.82, -23.18], [143.75, -23.15], [143.5, -23.25], [143.0, -23.04], [142.5, -23.25], [141.97, -23.03], [141.75, -22.5], [141.85, -22.25], [141.75, -22.0]], [[143.25, -20.85], [143.32, -20.82], [143.35, -20.75], [143.32, -20.68], [143.25, -20.65], [143.0, -20.75], [143.25, -20.85]]]]}, "2022-08-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -22.0], [141.97, -21.47], [142.32, -21.32], [142.47, -20.97], [143.0, -20.75], [142.47, -20.53], [142.32, -20.18], [141.97, -20.03], [141.75, -19.5], [141.85, -19.25], [141.75, -19.0], [141.97, -18.47], [142.5, -18.25], [143.03, -18.47], [143.18, -18.82], [143.53, -18.97], [143.68, -19.32], [143.75, -19.35], [144.0, -19.25], [144.53, -19.47], [144.68, -19.82], [145.03, -19.97], [145.25, -20.5], [145.04, -21.0], [145.18, -21.32], [145.53, -21.47], [145.75, -22.0], [145.65, -22.25], [145.75, -22.5], [145.65, -22.75], [145.75, -23.0], [145.53, -23.53], [145.0, -23.75], [144.75, -23.65], [144.5, -23.75], [143.97, -23.53], [143.82, -23.18], [143.75, -23.15], [143.5, -23.25], [143.0, -23.04], [142.5, -23.25], [141.97, -23.03], [141.75, -22.5], [141.85, -22.25], [141.75, -22.0]], [[143.25, -20.85], [143.32, -20.82], [143.35, -20.75], [143.32, -20.68], [143.25, -20.65], [143.0, -20.75], [143.25, -20.85]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.427352465565889}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.562942295350769}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.801498302716254, 13.497799129710813, 14.463241400395475, 15.156135699845152, 14.587489808446435]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.521378296938337, 12.690910760809913, 12.915474258215, 14.088547219380757, 13.358841074095324]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.2711469799326665, -4.968124987640505, -4.661690248280087, -4.07512280742125, -4.662780629775643]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.313103661964988, -5.427352465565889, -5.386977631523791, -4.415992869437616, -5.316680631733391]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3874891323924818, -1.6345443801272268, -1.6041567646984638, -1.4099233948426888, -1.6219720119686172]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3897176149881472, -1.7597545186664387, -1.7992415185310195, -1.5492749224388094, -1.8028676597921964]}}