{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:55:18.263121", "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-Dec-28_to_2013-Dec-30_122.5_-17.5"}, "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": 2013120001081}, "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": "December 28 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 30 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 50023.52528839795}, "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": ["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": -17.5}, "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": 122.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "122.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 121.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 124.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-12-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -17.5], [121.85, -17.25], [121.75, -17.0], [121.97, -16.47], [122.32, -16.32], [122.47, -15.97], [123.0, -15.75], [123.53, -15.97], [123.75, -16.5], [123.65, -16.75], [123.68, -16.82], [123.75, -16.85], [124.0, -16.75], [124.53, -16.97], [124.68, -17.32], [125.03, -17.47], [125.25, -18.0], [125.03, -18.53], [124.68, -18.68], [124.53, -19.03], [124.0, -19.25], [123.75, -19.15], [123.5, -19.25], [123.25, -19.15], [123.0, -19.25], [122.75, -19.15], [122.5, -19.25], [122.25, -19.15], [122.0, -19.25], [121.47, -19.03], [121.25, -18.5], [121.47, -17.97], [121.82, -17.82], [121.85, -17.75], [121.75, -17.5]]]]}, "2013-12-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -17.5], [121.85, -17.25], [121.75, -17.0], [121.97, -16.47], [122.32, -16.32], [122.47, -15.97], [123.0, -15.75], [123.53, -15.97], [123.75, -16.5], [123.65, -16.75], [123.68, -16.82], [123.75, -16.85], [124.0, -16.75], [124.53, -16.97], [124.68, -17.32], [125.03, -17.47], [125.25, -18.0], [125.03, -18.53], [124.68, -18.68], [124.53, -19.03], [124.0, -19.25], [123.75, -19.15], [123.5, -19.25], [123.25, -19.15], [123.0, -19.25], [122.75, -19.15], [122.5, -19.25], [122.25, -19.15], [122.0, -19.25], [121.47, -19.03], [121.25, -18.5], [121.47, -17.97], [121.82, -17.82], [121.85, -17.75], [121.75, -17.5]]]]}, "2013-12-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.75, -17.5], [121.85, -17.25], [121.75, -17.0], [121.97, -16.47], [122.32, -16.32], [122.47, -15.97], [123.0, -15.75], [123.53, -15.97], [123.75, -16.5], [123.65, -16.75], [123.68, -16.82], [123.75, -16.85], [124.0, -16.75], [124.53, -16.97], [124.68, -17.32], [125.03, -17.47], [125.25, -18.0], [125.03, -18.53], [124.68, -18.68], [124.53, -19.03], [124.0, -19.25], [123.75, -19.15], [123.5, -19.25], [123.25, -19.15], [123.0, -19.25], [122.75, -19.15], [122.5, -19.25], [122.25, -19.15], [122.0, -19.25], [121.47, -19.03], [121.25, -18.5], [121.47, -17.97], [121.82, -17.82], [121.85, -17.75], [121.75, -17.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.158102230274665}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.135476790992652}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.666123397366732, 25.45091861185614, 26.58880751094796]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.29742859466336, 23.9566611350337, 25.453742554151177]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.789268945531118, -4.880495030391948, -3.736666397054889]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.934734506533914, -6.158102230274665, -5.456196977657839]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0268606433132237, -2.7631292794301685, -2.094277527387923]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.582118336602302, -3.7234205881703675, -2.9336362740282502]}}