{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:31.293977", "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": "2018-Nov-22_to_2018-Nov-24_148.5_-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": 2018110000714}, "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": "November 22 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 52669.9692144932}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Australia", "S.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": -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": 148.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "148.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 146.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 149.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -37.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -34.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.82, -35.32], [146.85, -35.25], [146.75, -35.0], [146.97, -34.47], [147.5, -34.25], [147.75, -34.35], [148.0, -34.25], [148.25, -34.35], [148.32, -34.32], [148.47, -33.97], [149.0, -33.75], [149.53, -33.97], [149.68, -34.32], [150.03, -34.47], [150.25, -35.0], [150.03, -35.53], [149.68, -35.68], [149.65, -35.75], [149.75, -36.0], [149.53, -36.53], [149.18, -36.68], [149.03, -37.03], [148.68, -37.18], [148.53, -37.53], [148.0, -37.75], [147.47, -37.53], [147.32, -37.18], [147.25, -37.15], [147.0, -37.25], [146.75, -37.15], [146.5, -37.25], [145.97, -37.03], [145.75, -36.5], [145.97, -35.97], [146.32, -35.82], [146.47, -35.47], [146.82, -35.32]]]]}, "2018-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.82, -35.32], [146.85, -35.25], [146.75, -35.0], [146.97, -34.47], [147.5, -34.25], [147.75, -34.35], [148.0, -34.25], [148.25, -34.35], [148.32, -34.32], [148.47, -33.97], [149.0, -33.75], [149.53, -33.97], [149.68, -34.32], [150.03, -34.47], [150.25, -35.0], [150.03, -35.53], [149.68, -35.68], [149.65, -35.75], [149.75, -36.0], [149.53, -36.53], [149.18, -36.68], [149.03, -37.03], [148.68, -37.18], [148.53, -37.53], [148.0, -37.75], [147.47, -37.53], [147.32, -37.18], [147.25, -37.15], [147.0, -37.25], [146.75, -37.15], [146.5, -37.25], [145.97, -37.03], [145.75, -36.5], [145.97, -35.97], [146.32, -35.82], [146.47, -35.47], [146.82, -35.32]]]]}, "2018-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.82, -35.32], [146.85, -35.25], [146.75, -35.0], [146.97, -34.47], [147.5, -34.25], [147.75, -34.35], [148.0, -34.25], [148.25, -34.35], [148.32, -34.32], [148.47, -33.97], [149.0, -33.75], [149.53, -33.97], [149.68, -34.32], [150.03, -34.47], [150.25, -35.0], [150.03, -35.53], [149.68, -35.68], [149.65, -35.75], [149.75, -36.0], [149.53, -36.53], [149.18, -36.68], [149.03, -37.03], [148.68, -37.18], [148.53, -37.53], [148.0, -37.75], [147.47, -37.53], [147.32, -37.18], [147.25, -37.15], [147.0, -37.25], [146.75, -37.15], [146.5, -37.25], [145.97, -37.03], [145.75, -36.5], [145.97, -35.97], [146.32, -35.82], [146.47, -35.47], [146.82, -35.32]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.859992834639513}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.917126148580806}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.858778844873029, 9.575981213516002, 11.080731757500814]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.8937562688213347, 4.648315946519631, 6.858892752814938]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-8.65134637661036, -6.80995847774367, -5.290073591388388]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-9.859992834639513, -8.021503060225143, -5.874720013378806]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.167452794771713, -1.7387858671520624, -1.3836646818517362]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5356831374756474, -2.1115441575982064, -1.5726300986107924]}}