{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:51.949161", "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-Sep-15_to_2017-Sep-18_128.5_-16.5"}, "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": 2017090000459}, "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": "September 15 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 18 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": 79712.29846846338}, "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": -16.5}, "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": 128.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "128.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 126.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 131.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-09-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[127.25, -17.5], [127.47, -16.97], [127.88, -16.8], [127.75, -16.5], [127.97, -15.97], [128.5, -15.75], [129.03, -15.97], [129.2, -16.37], [129.5, -16.25], [129.75, -16.35], [129.82, -16.32], [129.97, -15.97], [130.5, -15.75], [131.03, -15.97], [131.25, -16.5], [131.04, -17.0], [131.18, -17.32], [131.53, -17.47], [131.75, -18.0], [131.53, -18.53], [131.0, -18.75], [130.5, -18.54], [130.0, -18.75], [129.75, -18.65], [129.5, -18.75], [129.25, -18.65], [129.0, -18.75], [128.75, -18.65], [128.5, -18.75], [127.97, -18.53], [127.82, -18.18], [127.47, -18.03], [127.25, -17.5]]]]}, "2017-09-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, -18.53], [125.75, -18.0], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.85, -17.25], [126.75, -17.0], [126.85, -16.75], [126.75, -16.5], [126.97, -15.97], [127.32, -15.82], [127.47, -15.47], [128.0, -15.25], [128.25, -15.35], [128.5, -15.25], [129.03, -15.47], [129.18, -15.82], [129.53, -15.97], [129.68, -16.32], [129.75, -16.35], [129.82, -16.32], [129.97, -15.97], [130.5, -15.75], [131.03, -15.97], [131.25, -16.5], [131.04, -17.0], [131.18, -17.32], [131.53, -17.47], [131.75, -18.0], [131.53, -18.53], [131.0, -18.75], [130.5, -18.54], [130.0, -18.75], [129.75, -18.65], [129.5, -18.75], [129.25, -18.65], [129.0, -18.75], [128.75, -18.65], [128.5, -18.75], [127.97, -18.53], [127.82, -18.18], [127.75, -18.15], [127.68, -18.18], [127.53, -18.53], [127.0, -18.75], [126.75, -18.65], [126.5, -18.75], [125.97, -18.53]]]]}, "2017-09-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, -18.53], [125.75, -18.0], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.85, -17.25], [126.75, -17.0], [126.85, -16.75], [126.75, -16.5], [126.97, -15.97], [127.32, -15.82], [127.47, -15.47], [128.0, -15.25], [128.25, -15.35], [128.5, -15.25], [129.03, -15.47], [129.18, -15.82], [129.53, -15.97], [129.68, -16.32], [129.75, -16.35], [129.82, -16.32], [129.97, -15.97], [130.5, -15.75], [131.03, -15.97], [131.25, -16.5], [131.04, -17.0], [131.18, -17.32], [131.53, -17.47], [131.75, -18.0], [131.53, -18.53], [131.0, -18.75], [130.5, -18.54], [130.0, -18.75], [129.75, -18.65], [129.5, -18.75], [129.25, -18.65], [129.0, -18.75], [128.75, -18.65], [128.5, -18.75], [127.97, -18.53], [127.82, -18.18], [127.75, -18.15], [127.68, -18.18], [127.53, -18.53], [127.0, -18.75], [126.75, -18.65], [126.5, -18.75], [125.97, -18.53]]]]}, "2017-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[125.97, -18.53], [125.75, -18.0], [125.97, -17.47], [126.5, -17.25], [126.75, -17.35], [126.82, -17.32], [126.85, -17.25], [126.75, -17.0], [126.85, -16.75], [126.75, -16.5], [126.97, -15.97], [127.32, -15.82], [127.47, -15.47], [128.0, -15.25], [128.25, -15.35], [128.5, -15.25], [129.03, -15.47], [129.18, -15.82], [129.53, -15.97], [129.75, -16.5], [129.65, -16.75], [129.75, -17.0], [129.65, -17.25], [129.75, -17.5], [129.53, -18.03], [129.0, -18.25], [128.75, -18.15], [128.5, -18.25], [128.0, -18.04], [127.68, -18.18], [127.53, -18.53], [127.0, -18.75], [126.75, -18.65], [126.5, -18.75], [125.97, -18.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.921591194402708}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.6114374751711504}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.80411863630644, 24.416653440759774, 24.345977933951474, 25.130123458906667]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.913236867281057, 22.503813020063205, 22.672030407843238, 23.601784449463423]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.931048274278707, -3.5261214950906217, -3.6946266022376797, -3.295655011488793]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.842346271743793, -4.921591194402708, -4.88585144786515, -3.7050466551274894]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5283460550566488, -1.484399839450973, -1.574816072667204, -1.5894467995237085]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7528594239633992, -1.828392734740133, -1.8537814235231223, -2.0605318742854424]}}