{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:46:58.248643", "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": "2011-Mar-22_to_2011-Mar-26_141.0_-29.5"}, "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": 2011030001109}, "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": "March 22 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 26 2011"}, "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": 80209.76711974123}, "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": ["C.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": -29.5}, "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": 141.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -28.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.47, -28.97], [141.0, -28.75], [141.53, -28.97], [141.75, -29.5], [141.65, -29.75], [141.75, -30.0], [141.53, -30.53], [141.0, -30.75], [140.47, -30.53], [140.25, -30.0], [140.35, -29.75], [140.25, -29.5], [140.47, -28.97]]]]}, "2011-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.32, -30.18], [139.97, -30.03], [139.75, -29.5], [139.97, -28.97], [140.5, -28.75], [140.75, -28.85], [140.82, -28.82], [140.97, -28.47], [141.5, -28.25], [141.75, -28.35], [142.0, -28.25], [142.53, -28.47], [142.75, -29.0], [142.63, -29.3], [142.75, -29.35], [142.82, -29.32], [142.97, -28.97], [143.5, -28.75], [143.75, -28.85], [144.0, -28.75], [144.53, -28.97], [144.75, -29.5], [144.65, -29.75], [144.68, -29.82], [144.75, -29.85], [145.0, -29.75], [145.53, -29.97], [145.75, -30.5], [145.53, -31.03], [145.0, -31.25], [144.75, -31.15], [144.5, -31.25], [144.25, -31.15], [144.0, -31.25], [143.75, -31.15], [143.5, -31.25], [142.97, -31.03], [142.82, -30.68], [142.75, -30.65], [142.5, -30.75], [142.25, -30.65], [142.18, -30.68], [142.03, -31.03], [141.68, -31.18], [141.53, -31.53], [141.0, -31.75], [140.75, -31.65], [140.5, -31.75], [139.97, -31.53], [139.75, -31.0], [139.97, -30.47], [140.32, -30.32], [140.35, -30.25], [140.32, -30.18]]]]}, "2011-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -30.25], [139.75, -30.0], [139.85, -29.75], [139.75, -29.5], [139.97, -28.97], [140.5, -28.75], [140.75, -28.85], [140.82, -28.82], [140.97, -28.47], [141.5, -28.25], [141.75, -28.35], [142.0, -28.25], [142.53, -28.47], [142.68, -28.82], [143.0, -28.96], [143.5, -28.75], [143.75, -28.85], [144.0, -28.75], [144.53, -28.97], [144.68, -29.32], [145.03, -29.47], [145.18, -29.82], [145.53, -29.97], [145.75, -30.5], [145.53, -31.03], [145.0, -31.25], [144.75, -31.15], [144.5, -31.25], [144.25, -31.15], [144.0, -31.25], [143.75, -31.15], [143.68, -31.18], [143.53, -31.53], [143.0, -31.75], [142.75, -31.65], [142.5, -31.75], [142.0, -31.54], [141.5, -31.75], [141.25, -31.65], [141.0, -31.75], [140.75, -31.65], [140.5, -31.75], [139.97, -31.53], [139.75, -31.0], [139.85, -30.75], [139.75, -30.5], [139.85, -30.25]]]]}, "2011-03-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -30.25], [139.75, -30.0], [139.85, -29.75], [139.75, -29.5], [139.97, -28.97], [140.5, -28.75], [140.75, -28.85], [140.82, -28.82], [140.97, -28.47], [141.5, -28.25], [141.75, -28.35], [142.0, -28.25], [142.53, -28.47], [142.68, -28.82], [143.0, -28.96], [143.5, -28.75], [143.75, -28.85], [144.0, -28.75], [144.53, -28.97], [144.68, -29.32], [145.03, -29.47], [145.18, -29.82], [145.53, -29.97], [145.75, -30.5], [145.53, -31.03], [145.0, -31.25], [144.75, -31.15], [144.5, -31.25], [144.25, -31.15], [144.0, -31.25], [143.75, -31.15], [143.68, -31.18], [143.53, -31.53], [143.0, -31.75], [142.75, -31.65], [142.5, -31.75], [142.0, -31.54], [141.5, -31.75], [141.25, -31.65], [141.0, -31.75], [140.75, -31.65], [140.5, -31.75], [139.97, -31.53], [139.75, -31.0], [139.85, -30.75], [139.75, -30.5], [139.85, -30.25]]]]}, "2011-03-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -30.25], [139.75, -30.0], [139.85, -29.75], [139.75, -29.5], [139.97, -28.97], [140.5, -28.75], [140.75, -28.85], [140.82, -28.82], [140.97, -28.47], [141.5, -28.25], [141.75, -28.35], [142.0, -28.25], [142.53, -28.47], [142.68, -28.82], [143.0, -28.96], [143.5, -28.75], [143.75, -28.85], [144.0, -28.75], [144.53, -28.97], [144.68, -29.32], [145.03, -29.47], [145.25, -30.0], [145.15, -30.25], [145.25, -30.5], [145.03, -31.03], [144.5, -31.25], [144.25, -31.15], [144.0, -31.25], [143.75, -31.15], [143.68, -31.18], [143.53, -31.53], [143.0, -31.75], [142.75, -31.65], [142.5, -31.75], [142.0, -31.54], [141.5, -31.75], [141.25, -31.65], [141.0, -31.75], [140.75, -31.65], [140.5, -31.75], [139.97, -31.53], [139.75, -31.0], [139.85, -30.75], [139.75, -30.5], [139.85, -30.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.6194270513117885}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.209716740883581}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.272412769825564, 18.88275679314677, 18.622214935923296, 17.13587228414201, 17.377147054491786]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.265309133962376, 18.46941344476585, 17.083086620425206, 15.525334999670747, 16.01934419421565]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.091167940444393, -5.866831631995394, -5.6775880999425645, -6.835488171839211, -6.369316781817794]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.2926751138645045, -6.593467564829837, -6.38092709783632, -7.6194270513117885, -7.229249370553873]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5855114805664803, -1.5091254388279485, -1.4278743019158393, -1.7345669298583992, -1.6550765151484783]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6465619206896436, -1.6655122549588417, -1.5844601448510975, -1.9144864155373003, -1.8464542890208335]}}