{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:35.991203", "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_119.0_-20.5"}, "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": 2017040000122}, "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": 60449.47753935701}, "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"]}, "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": ["Indian Ocean"]}, "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": -20.5}, "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": 119.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "119.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 116.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 119.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.75}, "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": [[[[116.47, -21.53], [116.25, -21.0], [116.47, -20.47], [117.0, -20.25], [117.25, -20.35], [117.5, -20.25], [117.75, -20.35], [117.82, -20.32], [117.97, -19.97], [118.5, -19.75], [118.75, -19.85], [119.0, -19.75], [119.25, -19.85], [119.5, -19.75], [120.03, -19.97], [120.25, -20.5], [120.15, -20.75], [120.25, -21.0], [120.03, -21.53], [119.68, -21.68], [119.53, -22.03], [119.18, -22.18], [119.03, -22.53], [118.5, -22.75], [118.25, -22.65], [118.0, -22.75], [117.47, -22.53], [117.25, -22.0], [117.35, -21.75], [117.32, -21.68], [117.25, -21.65], [117.0, -21.75], [116.47, -21.53]]]]}, "2017-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.88, -21.7], [116.47, -21.53], [116.25, -21.0], [116.47, -20.47], [117.0, -20.25], [117.25, -20.35], [117.32, -20.32], [117.47, -19.97], [118.0, -19.75], [118.25, -19.85], [118.5, -19.75], [118.75, -19.85], [119.0, -19.75], [119.25, -19.85], [119.5, -19.75], [120.03, -19.97], [120.25, -20.5], [120.15, -20.75], [120.25, -21.0], [120.03, -21.53], [119.68, -21.68], [119.53, -22.03], [119.18, -22.18], [119.03, -22.53], [118.68, -22.68], [118.53, -23.03], [118.0, -23.25], [117.75, -23.15], [117.5, -23.25], [116.97, -23.03], [116.75, -22.5], [116.85, -22.25], [116.75, -22.0], [116.88, -21.7]]]]}, "2017-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.85, -22.25], [116.75, -22.0], [116.88, -21.7], [116.47, -21.53], [116.25, -21.0], [116.47, -20.47], [117.0, -20.25], [117.25, -20.35], [117.32, -20.32], [117.47, -19.97], [118.0, -19.75], [118.25, -19.85], [118.5, -19.75], [118.75, -19.85], [118.82, -19.82], [118.97, -19.47], [119.5, -19.25], [120.03, -19.47], [120.25, -20.0], [120.15, -20.25], [120.25, -20.5], [120.15, -20.75], [120.25, -21.0], [120.03, -21.53], [119.68, -21.68], [119.65, -21.75], [119.75, -22.0], [119.53, -22.53], [119.0, -22.75], [118.75, -22.65], [118.68, -22.68], [118.53, -23.03], [118.18, -23.18], [118.03, -23.53], [117.5, -23.75], [116.97, -23.53], [116.75, -23.0], [116.85, -22.75], [116.75, -22.5], [116.85, -22.25]]]]}, "2017-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.85, -22.25], [116.75, -22.0], [116.88, -21.7], [116.47, -21.53], [116.25, -21.0], [116.47, -20.47], [117.0, -20.25], [117.25, -20.35], [117.32, -20.32], [117.47, -19.97], [118.0, -19.75], [118.25, -19.85], [118.5, -19.75], [118.75, -19.85], [118.82, -19.82], [118.97, -19.47], [119.5, -19.25], [120.03, -19.47], [120.25, -20.0], [120.15, -20.25], [120.25, -20.5], [120.15, -20.75], [120.25, -21.0], [120.03, -21.53], [119.68, -21.68], [119.65, -21.75], [119.75, -22.0], [119.53, -22.53], [119.0, -22.75], [118.75, -22.65], [118.68, -22.68], [118.53, -23.03], [118.18, -23.18], [118.03, -23.53], [117.5, -23.75], [116.97, -23.53], [116.75, -23.0], [116.85, -22.75], [116.75, -22.5], [116.85, -22.25]]]]}, "2017-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[116.85, -22.25], [116.75, -22.0], [116.88, -21.7], [116.47, -21.53], [116.25, -21.0], [116.47, -20.47], [117.0, -20.25], [117.25, -20.35], [117.5, -20.25], [117.75, -20.35], [117.82, -20.32], [117.97, -19.97], [118.5, -19.75], [118.75, -19.85], [118.82, -19.82], [118.97, -19.47], [119.5, -19.25], [120.03, -19.47], [120.25, -20.0], [120.15, -20.25], [120.25, -20.5], [120.15, -20.75], [120.25, -21.0], [120.03, -21.53], [119.68, -21.68], [119.65, -21.75], [119.75, -22.0], [119.53, -22.53], [119.0, -22.75], [118.5, -22.54], [118.18, -22.68], [118.15, -22.75], [118.25, -23.0], [118.03, -23.53], [117.5, -23.75], [116.97, -23.53], [116.75, -23.0], [116.85, -22.75], [116.75, -22.5], [116.85, -22.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.675060873927293}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.6549765939713525}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.619855780016678, 25.8128964616443, 25.428416451804026, 24.944134574307384, 25.45319379304067]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.1520113170223, 22.54530163982571, 21.84261236691168, 21.728399636475103, 22.927831179811562]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.279319101959134, -3.5215796376195794, -3.721738427455055, -4.052154113023846, -3.5324838703974035]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7842821072467814, -4.056548493161472, -4.278656047397135, -4.675060873927293, -4.248495593194036]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5939085391785601, -1.720923634606145, -1.762549620630207, -1.8640215244303995, -1.6353258496187406]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7863227016725147, -2.1836069217071645, -2.113198696309287, -2.222299847440866, -2.0173332533789377]}}