{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:35.978835", "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-Apr-02_to_2017-Apr-06_152.0_-30.0"}, "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": 2017040000121}, "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": "April 02 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 06 2017"}, "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": 94928.479806321}, "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": ["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": -30.0}, "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": 152.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "152.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 150.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 153.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[151.25, -29.5], [151.47, -28.97], [152.0, -28.75], [152.53, -28.97], [152.75, -29.5], [152.65, -29.75], [152.68, -29.82], [153.03, -29.97], [153.25, -30.5], [153.03, -31.03], [152.5, -31.25], [152.25, -31.15], [152.0, -31.25], [151.75, -31.15], [151.5, -31.25], [150.97, -31.03], [150.75, -30.5], [150.97, -29.97], [151.32, -29.82], [151.35, -29.75], [151.25, -29.5]]]]}, "2017-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.97, -29.47], [151.32, -29.32], [151.35, -29.25], [151.25, -29.0], [151.35, -28.75], [151.32, -28.68], [150.97, -28.53], [150.75, -28.0], [150.97, -27.47], [151.5, -27.25], [151.75, -27.35], [152.0, -27.25], [152.53, -27.47], [152.68, -27.82], [152.8, -27.87], [152.85, -27.75], [152.75, -27.5], [152.97, -26.97], [153.5, -26.75], [154.03, -26.97], [154.25, -27.5], [154.15, -27.75], [154.25, -28.0], [154.03, -28.53], [153.5, -28.75], [154.03, -28.97], [154.25, -29.5], [154.03, -30.03], [153.68, -30.18], [153.65, -30.25], [153.75, -30.5], [153.53, -31.03], [153.0, -31.25], [152.75, -31.15], [152.5, -31.25], [152.25, -31.15], [152.0, -31.25], [151.75, -31.15], [151.5, -31.25], [150.97, -31.03], [150.75, -30.5], [150.85, -30.25], [150.75, -30.0], [150.97, -29.47]], [[153.2, -28.62], [153.07, -28.93], [153.5, -28.75], [153.2, -28.62]]]]}, "2017-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.47, -26.47], [151.0, -26.25], [151.25, -26.35], [151.32, -26.32], [151.47, -25.97], [152.0, -25.75], [152.53, -25.97], [152.7, -26.37], [153.0, -26.25], [153.53, -26.47], [153.68, -26.82], [154.03, -26.97], [154.25, -27.5], [154.15, -27.75], [154.25, -28.0], [154.15, -28.25], [154.25, -28.5], [154.04, -29.0], [154.25, -29.5], [154.03, -30.03], [153.68, -30.18], [153.65, -30.25], [153.75, -30.5], [153.53, -31.03], [153.0, -31.25], [152.75, -31.15], [152.5, -31.25], [152.25, -31.15], [152.0, -31.25], [151.75, -31.15], [151.5, -31.25], [150.97, -31.03], [150.75, -30.5], [150.85, -30.25], [150.75, -30.0], [150.85, -29.75], [150.75, -29.5], [150.96, -29.0], [150.75, -28.5], [150.85, -28.25], [150.82, -28.18], [150.47, -28.03], [150.25, -27.5], [150.35, -27.25], [150.25, -27.0], [150.47, -26.47]]]]}, "2017-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.47, -26.47], [151.0, -26.25], [151.25, -26.35], [151.32, -26.32], [151.47, -25.97], [152.0, -25.75], [152.53, -25.97], [152.7, -26.37], [153.0, -26.25], [153.53, -26.47], [153.68, -26.82], [154.03, -26.97], [154.25, -27.5], [154.15, -27.75], [154.25, -28.0], [154.15, -28.25], [154.25, -28.5], [154.04, -29.0], [154.25, -29.5], [154.03, -30.03], [153.68, -30.18], [153.65, -30.25], [153.75, -30.5], [153.53, -31.03], [153.0, -31.25], [152.75, -31.15], [152.5, -31.25], [152.25, -31.15], [152.0, -31.25], [151.75, -31.15], [151.5, -31.25], [150.97, -31.03], [150.75, -30.5], [150.85, -30.25], [150.75, -30.0], [150.85, -29.75], [150.75, -29.5], [150.96, -29.0], [150.75, -28.5], [150.85, -28.25], [150.82, -28.18], [150.47, -28.03], [150.25, -27.5], [150.35, -27.25], [150.25, -27.0], [150.47, -26.47]]]]}, "2017-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[150.47, -26.47], [151.0, -26.25], [151.25, -26.35], [151.32, -26.32], [151.47, -25.97], [152.0, -25.75], [152.53, -25.97], [152.7, -26.37], [153.0, -26.25], [153.53, -26.47], [153.68, -26.82], [154.03, -26.97], [154.25, -27.5], [154.15, -27.75], [154.25, -28.0], [154.15, -28.25], [154.25, -28.5], [154.04, -29.0], [154.25, -29.5], [154.03, -30.03], [153.68, -30.18], [153.53, -30.53], [153.0, -30.75], [152.5, -30.54], [152.0, -30.75], [151.75, -30.65], [151.5, -30.75], [150.97, -30.53], [150.75, -30.0], [150.85, -29.75], [150.75, -29.5], [150.96, -29.0], [150.75, -28.5], [150.85, -28.25], [150.82, -28.18], [150.47, -28.03], [150.25, -27.5], [150.35, -27.25], [150.25, -27.0], [150.47, -26.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7059988794620153}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5852363954607225}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.466198350235118, 15.740102266749432, 16.539858101060815, 16.261222457950907, 16.876590902009355]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.33733650229533, 11.181016237144831, 10.932328503928318, 10.648814990121423, 11.282565047366631]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.830330623177622, -2.3904312700525137, -2.580944187268348, -2.6907290771863344, -2.5385328600940533]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.480807166695456, -3.4521462988473672, -3.5764065801031393, -3.7059988794620153, -3.310155288964552]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4244797707488737, -1.4300420750336282, -1.574107600796476, -1.5575409478051878, -1.4861667759181498]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6319125406097794, -1.6157421395882734, -1.965204434204279, -1.8600122460463269, -1.8713623509517292]}}