{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:35.346029", "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": "2013-Feb-01_to_2013-Feb-04_150.5_-31.0"}, "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": 2013020000019}, "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": "February 01 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 04 2013"}, "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": 84068.72227598842}, "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"]}, "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": ["Tasman 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": -31.0}, "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": 150.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "150.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 149.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 152.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -34.75}, "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": {"2013-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.96, -31.0], [148.75, -30.5], [148.97, -29.97], [149.32, -29.82], [149.35, -29.75], [149.25, -29.5], [149.35, -29.25], [149.25, -29.0], [149.47, -28.47], [150.0, -28.25], [150.25, -28.35], [150.5, -28.25], [151.03, -28.47], [151.25, -29.0], [151.15, -29.25], [151.25, -29.5], [151.15, -29.75], [151.25, -30.0], [151.15, -30.25], [151.18, -30.32], [151.53, -30.47], [151.75, -31.0], [151.54, -31.5], [151.68, -31.82], [152.03, -31.97], [152.18, -32.32], [152.53, -32.47], [152.75, -33.0], [152.53, -33.53], [152.18, -33.68], [152.15, -33.75], [152.25, -34.0], [152.03, -34.53], [151.68, -34.68], [151.53, -35.03], [151.0, -35.25], [150.47, -35.03], [150.25, -34.5], [150.35, -34.25], [150.32, -34.18], [149.97, -34.03], [149.75, -33.5], [149.85, -33.25], [149.75, -33.0], [149.85, -32.75], [149.82, -32.68], [149.75, -32.65], [149.5, -32.75], [148.97, -32.53], [148.75, -32.0], [148.85, -31.75], [148.75, -31.5], [148.96, -31.0]]]]}, "2013-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.96, -31.0], [148.75, -30.5], [148.97, -29.97], [149.32, -29.82], [149.35, -29.75], [149.25, -29.5], [149.35, -29.25], [149.25, -29.0], [149.47, -28.47], [150.0, -28.25], [150.25, -28.35], [150.5, -28.25], [151.03, -28.47], [151.25, -29.0], [151.15, -29.25], [151.25, -29.5], [151.15, -29.75], [151.25, -30.0], [151.15, -30.25], [151.18, -30.32], [151.53, -30.47], [151.75, -31.0], [151.54, -31.5], [151.68, -31.82], [152.03, -31.97], [152.18, -32.32], [152.53, -32.47], [152.75, -33.0], [152.53, -33.53], [152.18, -33.68], [152.15, -33.75], [152.25, -34.0], [152.03, -34.53], [151.68, -34.68], [151.53, -35.03], [151.0, -35.25], [150.47, -35.03], [150.25, -34.5], [150.35, -34.25], [150.32, -34.18], [149.97, -34.03], [149.75, -33.5], [149.85, -33.25], [149.75, -33.0], [149.85, -32.75], [149.82, -32.68], [149.75, -32.65], [149.5, -32.75], [148.97, -32.53], [148.75, -32.0], [148.85, -31.75], [148.75, -31.5], [148.96, -31.0]]]]}, "2013-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.96, -31.0], [148.75, -30.5], [148.97, -29.97], [149.32, -29.82], [149.35, -29.75], [149.25, -29.5], [149.35, -29.25], [149.25, -29.0], [149.47, -28.47], [150.0, -28.25], [150.25, -28.35], [150.5, -28.25], [151.03, -28.47], [151.25, -29.0], [151.15, -29.25], [151.25, -29.5], [151.15, -29.75], [151.25, -30.0], [151.15, -30.25], [151.18, -30.32], [151.53, -30.47], [151.75, -31.0], [151.54, -31.5], [151.68, -31.82], [152.03, -31.97], [152.18, -32.32], [152.53, -32.47], [152.75, -33.0], [152.53, -33.53], [152.18, -33.68], [152.15, -33.75], [152.25, -34.0], [152.03, -34.53], [151.68, -34.68], [151.53, -35.03], [151.0, -35.25], [150.47, -35.03], [150.25, -34.5], [150.35, -34.25], [150.32, -34.18], [149.97, -34.03], [149.75, -33.5], [149.85, -33.25], [149.75, -33.0], [149.85, -32.75], [149.82, -32.68], [149.75, -32.65], [149.5, -32.75], [148.97, -32.53], [148.75, -32.0], [148.85, -31.75], [148.75, -31.5], [148.96, -31.0]]]]}, "2013-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[149.25, -31.0], [149.47, -30.47], [150.0, -30.25], [150.25, -30.35], [150.5, -30.25], [151.03, -30.47], [151.25, -31.0], [151.15, -31.25], [151.25, -31.5], [151.03, -32.03], [150.5, -32.25], [149.97, -32.03], [149.82, -31.68], [149.47, -31.53], [149.25, -31.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.900499353861619}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.541367418773098}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.09181769454335, 16.539301275696516, 18.816505525393495, 20.56653507820016]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.899268544750157, 13.096192498772439, 16.082721811037004, 19.814288047261357]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.725393077240049, -7.2399190513286324, -4.792875946510417, -4.1111186853351755]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.639221567930974, -8.900499353861619, -6.696008557749792, -4.227966052703891]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.584019880111375, -2.3536902045286037, -1.5504696380841883, -1.243651949003296]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2403905601720036, -2.5906124168799862, -2.054429192097943, -1.2647728976018169]}}