{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:40.834521", "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-Dec-13_to_2018-Dec-17_144.0_-17.5"}, "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": 2018120000455}, "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": "December 13 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2018"}, "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": 76178.83642096924}, "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": ["N.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": -17.5}, "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": 144.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.25}, "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": -20.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -19.0], [141.97, -18.47], [142.32, -18.32], 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[145.75, -19.0], [145.65, -19.25], [145.75, -19.5], [145.53, -20.03], [145.18, -20.18], [145.03, -20.53], [144.5, -20.75], [144.25, -20.65], [144.0, -20.75], [143.47, -20.53], [143.32, -20.18], [143.25, -20.15], [143.0, -20.25], [142.47, -20.03], [142.32, -19.68], [141.97, -19.53], [141.75, -19.0]]]]}, "2018-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.75, -19.0], [141.97, -18.47], [142.32, -18.32], [142.47, -17.97], [142.82, -17.82], [142.85, -17.75], [142.75, -17.5], [142.85, -17.25], [142.75, -17.0], [142.97, -16.47], [143.32, -16.32], [143.47, -15.97], [144.0, -15.75], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.68, -16.82], [145.03, -16.97], [145.25, -17.5], [145.15, -17.75], [145.25, -18.0], [145.15, -18.25], [145.18, -18.32], [145.53, -18.47], [145.75, -19.0], [145.65, -19.25], [145.75, -19.5], [145.53, -20.03], [145.18, -20.18], [145.03, -20.53], [144.5, -20.75], [144.25, -20.65], [144.0, -20.75], [143.47, -20.53], [143.32, -20.18], [143.25, -20.15], [143.0, -20.25], [142.47, -20.03], [142.32, -19.68], [141.97, -19.53], [141.75, -19.0]]]]}, "2018-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.85, -17.25], [142.75, -17.0], [142.97, -16.47], [143.32, -16.32], [143.47, -15.97], [144.0, -15.75], [144.53, -15.97], [144.75, -16.5], [144.65, -16.75], [144.68, -16.82], [145.03, -16.97], [145.25, -17.5], [145.15, -17.75], [145.25, -18.0], [145.15, -18.25], [145.18, -18.32], [145.53, -18.47], [145.75, -19.0], [145.65, -19.25], [145.75, -19.5], [145.53, -20.03], [145.0, -20.25], [144.47, -20.03], [144.32, -19.68], [144.25, -19.65], [144.0, -19.75], [143.75, -19.65], [143.5, -19.75], [143.25, -19.65], [143.0, -19.75], [142.47, -19.53], [142.25, -19.0], [142.47, -18.47], [142.88, -18.3], [142.75, -18.0], [142.85, -17.75], [142.75, -17.5], [142.85, -17.25]]]]}, "2018-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, -18.03], [143.25, -17.5], [143.47, -16.97], [144.0, -16.75], [144.25, -16.85], [144.5, -16.75], [145.03, -16.97], [145.25, -17.5], [145.03, -18.03], [144.5, -18.25], [144.25, -18.15], [144.0, -18.25], [143.47, -18.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.4052338714759}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.3965434808747155}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.587011645958682, 24.93792921768022, 23.790465422429293, 25.51476828205307, 26.4018053857327]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.96515827245031, 22.407751751494743, 21.845303465489735, 23.76434936380241, 25.895519789111574]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0489832488442863, -3.1632743534970063, -4.327838276391252, -2.8382059101784978, -2.196121234261682]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4355874649884868, -4.218088988377588, -6.4052338714759, -3.8081444538308915, -2.196718824773825]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4949462942875869, -1.6671788082982093, -2.3776072138859665, -1.5885116552046374, -1.3388725865107673]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7730568148806571, -2.0856643599975864, -3.366651096867046, -2.3011956172687396, -1.413199939701665]}}