{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:25.654846", "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": "2017-Nov-20_to_2017-Nov-23_146.5_-19.5"}, "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": 2017110000726}, "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 20 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 23 2017"}, "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": 93052.40061581922}, "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", "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": ["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": -19.5}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -21.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.97, -18.47], [146.5, -18.25], [147.03, -18.47], [147.2, -18.87], [147.5, -18.75], [148.03, -18.97], [148.25, -19.5], [148.03, -20.03], [147.5, -20.25], [147.0, -20.04], [146.5, -20.25], [145.97, -20.03], [145.75, -19.5], [145.85, -19.25], [145.75, -19.0], [145.97, -18.47]]]]}, "2017-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.35, -20.25], [142.25, -20.0], [142.47, -19.47], [142.82, -19.32], [142.97, -18.97], [143.32, -18.82], [143.35, -18.75], [143.25, -18.5], [143.47, -17.97], [144.0, -17.75], [144.25, -17.85], [144.5, -17.75], [145.03, -17.97], [145.18, -18.32], [145.25, -18.35], [145.5, -18.25], [146.0, -18.46], [146.5, -18.25], [147.03, -18.47], [147.18, -18.82], [147.25, -18.85], [147.5, -18.75], [148.03, -18.97], [148.25, -19.5], [148.03, -20.03], [147.5, -20.25], [147.25, -20.15], [147.0, -20.25], [146.75, -20.15], [146.68, -20.18], [146.53, -20.53], [146.0, -20.75], [145.75, -20.65], [145.68, -20.68], [145.53, -21.03], [145.18, -21.18], [145.03, -21.53], [144.5, -21.75], [144.25, -21.65], [144.0, -21.75], [143.75, -21.65], [143.5, -21.75], [143.25, -21.65], [143.0, -21.75], [142.47, -21.53], [142.25, -21.0], [142.35, -20.75], [142.25, -20.5], [142.35, -20.25]]]]}, "2017-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.35, -20.25], [142.25, -20.0], [142.47, -19.47], [142.82, -19.32], [142.97, -18.97], [143.32, -18.82], [143.35, -18.75], [143.25, -18.5], [143.47, -17.97], [144.0, -17.75], [144.25, -17.85], [144.5, -17.75], [145.03, -17.97], [145.18, -18.32], [145.25, -18.35], [145.5, -18.25], [146.0, -18.46], [146.5, -18.25], [147.03, -18.47], [147.18, -18.82], [147.25, -18.85], [147.5, -18.75], [148.03, -18.97], [148.25, -19.5], [148.03, -20.03], [147.5, -20.25], [147.25, -20.15], [147.0, -20.25], [146.75, -20.15], [146.68, -20.18], [146.53, -20.53], [146.0, -20.75], [145.75, -20.65], [145.68, -20.68], [145.53, -21.03], [145.18, -21.18], [145.03, -21.53], [144.5, -21.75], [144.25, -21.65], [144.0, -21.75], [143.75, -21.65], [143.5, -21.75], [143.25, -21.65], [143.0, -21.75], [142.47, -21.53], [142.25, -21.0], [142.35, -20.75], [142.25, -20.5], [142.35, -20.25]]]]}, "2017-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.35, -20.25], [142.25, -20.0], [142.47, -19.47], [142.82, -19.32], [142.97, -18.97], [143.32, -18.82], [143.35, -18.75], [143.25, -18.5], [143.47, -17.97], [144.0, -17.75], [144.25, -17.85], [144.5, -17.75], [145.03, -17.97], [145.18, -18.32], [145.25, -18.35], [145.5, -18.25], [146.03, -18.47], [146.18, -18.82], [146.25, -18.85], [146.5, -18.75], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.53, -20.03], [147.0, -20.25], [146.75, -20.15], [146.68, -20.18], [146.53, -20.53], [146.0, -20.75], [145.75, -20.65], [145.68, -20.68], [145.53, -21.03], [145.18, -21.18], [145.03, -21.53], [144.5, -21.75], [144.25, -21.65], [144.0, -21.75], [143.75, -21.65], [143.5, -21.75], [143.25, -21.65], [143.0, -21.75], [142.47, -21.53], [142.25, -21.0], [142.35, -20.75], [142.25, -20.5], [142.35, -20.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.67864552506154}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.142320759034361}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.9377187489402, 21.620209013253373, 22.490720637471554, 23.7903241062819]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.08997584763489, 18.28561552301909, 19.696295937083335, 20.81096941175423]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.488532594370895, -5.198316791200806, -4.3056960121007215, -3.1070368712523835]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.7735563198475006, -6.67864552506154, -5.88765939626262, -3.9092416517869424]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5375882513945287, -2.8049652467871726, -2.2329065838777757, -1.5649097249821393]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7382027623186125, -3.374917072494887, -2.7017947008855905, -1.929350138689031]}}