{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:39.604309", "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-23_to_2017-Apr-30_131.5_-9.5"}, "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": 2017040000644}, "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 23 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 127703.48620722843}, "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", "S.E.Asia"]}, "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": ["Arafura Sea", "Timor 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": -9.5}, "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": 131.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "131.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 128.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 134.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -12.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-04-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, -9.0], [130.47, -8.47], [130.82, -8.32], [130.97, -7.97], [131.5, -7.75], [132.03, -7.97], [132.2, -8.37], [132.5, -8.25], [132.75, -8.35], [133.0, -8.25], [133.53, -8.47], [133.68, -8.82], [134.03, -8.97], [134.25, -9.5], [134.03, -10.03], [133.5, -10.25], [133.25, -10.15], [133.0, -10.25], [132.75, -10.15], [132.5, -10.25], [132.0, -10.04], [131.5, -10.25], [130.97, -10.03], [130.82, -9.68], [130.47, -9.53], [130.25, -9.0]]]]}, "2017-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, -9.0], [130.47, -8.47], [130.82, -8.32], [130.97, -7.97], [131.5, -7.75], [132.03, -7.97], [132.2, -8.37], [132.5, -8.25], [132.75, -8.35], [133.0, -8.25], [133.53, -8.47], [133.68, -8.82], [134.03, -8.97], [134.25, -9.5], [134.03, -10.03], [133.5, -10.25], [133.25, -10.15], [133.0, -10.25], [132.75, -10.15], [132.68, -10.18], [132.53, -10.53], [132.0, -10.75], [131.75, -10.65], [131.5, -10.75], [130.97, -10.53], [130.75, -10.0], [130.85, -9.75], [130.82, -9.68], [130.47, -9.53], [130.25, -9.0]]]]}, "2017-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[130.25, -9.0], [130.47, -8.47], [130.82, -8.32], [130.97, -7.97], [131.5, -7.75], [132.03, -7.97], [132.2, -8.37], [132.5, -8.25], [132.75, -8.35], [133.0, -8.25], [133.53, -8.47], [133.68, -8.82], [134.03, -8.97], [134.18, -9.32], [134.53, -9.47], [134.75, -10.0], [134.65, -10.25], [134.75, -10.5], [134.53, -11.03], [134.18, -11.18], [134.04, -11.5], [134.25, -12.0], [134.03, -12.53], [133.5, -12.75], [133.25, -12.65], [133.0, -12.75], [132.47, -12.53], [132.32, -12.18], [131.97, -12.03], [131.75, -11.5], [131.85, -11.25], [131.82, -11.18], [131.47, -11.03], [131.32, -10.68], [130.97, -10.53], [130.75, -10.0], [130.85, -9.75], [130.82, -9.68], [130.47, -9.53], [130.25, -9.0]]]]}, "2017-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.25, -10.0], [128.47, -9.47], [129.0, -9.25], [129.53, -9.47], [129.68, -9.82], [129.75, -9.85], [130.0, -9.75], [130.25, -9.85], [130.32, -9.82], [130.47, -9.47], [130.82, -9.32], [130.97, -8.97], [131.5, -8.75], [131.75, -8.85], [132.0, -8.75], [132.25, -8.85], [132.32, -8.82], [132.47, -8.47], [133.0, -8.25], [133.53, -8.47], [133.68, -8.82], [134.03, -8.97], [134.18, -9.32], [134.53, -9.47], [134.75, -10.0], [134.65, -10.25], [134.75, -10.5], [134.53, -11.03], [134.18, -11.18], [134.04, -11.5], [134.25, -12.0], [134.03, -12.53], [133.5, -12.75], [133.25, -12.65], [133.0, -12.75], [132.47, -12.53], [132.32, -12.18], [131.97, -12.03], [131.75, -11.5], [131.53, -12.03], [131.0, -12.25], [130.75, -12.15], [130.5, -12.25], [129.97, -12.03], [129.82, -11.68], [129.47, -11.53], [129.32, -11.18], [128.97, -11.03], [128.82, -10.68], [128.47, -10.53], [128.25, -10.0]], [[131.85, -11.25], [131.82, -11.18], [131.7, -11.13], [131.65, -11.25], [131.75, -11.5], [131.85, -11.25]]]]}, "2017-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.25, -10.0], [128.47, -9.47], [129.0, -9.25], [129.53, -9.47], [129.68, -9.82], [129.75, -9.85], [130.0, -9.75], [130.25, -9.85], [130.32, -9.82], [130.47, -9.47], [130.82, -9.32], [130.97, -8.97], [131.5, -8.75], [131.75, -8.85], [132.0, -8.75], [132.25, -8.85], [132.32, -8.82], [132.47, -8.47], [133.0, -8.25], [133.53, -8.47], [133.68, -8.82], [134.03, -8.97], [134.18, -9.32], [134.53, -9.47], [134.75, -10.0], [134.65, -10.25], [134.75, -10.5], [134.53, -11.03], [134.18, -11.18], [134.04, -11.5], [134.25, -12.0], [134.03, -12.53], [133.5, -12.75], [133.25, -12.65], [133.18, -12.68], [133.03, -13.03], [132.5, -13.25], [131.97, -13.03], [131.75, -12.5], [131.96, -12.0], [131.75, -11.5], [131.53, -12.03], [131.0, -12.25], [130.75, -12.15], [130.5, -12.25], [129.97, -12.03], [129.82, -11.68], [129.47, -11.53], [129.32, -11.18], [128.97, -11.03], [128.82, -10.68], [128.47, -10.53], [128.25, -10.0]], [[131.85, -11.25], [131.82, -11.18], [131.7, -11.13], [131.65, -11.25], [131.75, -11.5], [131.85, -11.25]]]]}, "2017-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.97, -13.03], [131.75, -12.5], [131.97, -11.97], [132.5, -11.75], [133.03, -11.97], [133.25, -12.5], [133.03, -13.03], [132.5, -13.25], [131.97, -13.03]]], [[[129.0, -8.75], [129.25, -8.85], [129.5, -8.75], [130.03, -8.97], [130.25, -9.5], [130.13, -9.8], [130.25, -9.85], [130.32, -9.82], [130.47, -9.47], [130.82, -9.32], [130.97, -8.97], [131.5, -8.75], [131.75, -8.85], [132.0, -8.75], [132.53, -8.97], [132.75, -9.5], [132.53, -10.03], [132.18, -10.18], [132.03, -10.53], [131.68, -10.68], [131.65, -10.75], [131.75, -11.0], [131.65, -11.25], [131.75, -11.5], [131.53, -12.03], [131.0, -12.25], [130.75, -12.15], [130.5, -12.25], [129.97, -12.03], [129.82, -11.68], [129.47, -11.53], [129.32, -11.18], [128.97, -11.03], [128.82, -10.68], [128.47, -10.53], [128.25, -10.0], [128.35, -9.75], [128.25, -9.5], [128.47, -8.97], [129.0, -8.75]]]]}, "2017-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[131.97, -13.03], [131.75, -12.5], [131.97, -11.97], [132.5, -11.75], [133.03, -11.97], [133.25, -12.5], [133.03, -13.03], [132.5, -13.25], [131.97, -13.03]]], [[[128.25, -9.5], [128.47, -8.97], [129.0, -8.75], [129.25, -8.85], [129.5, -8.75], [130.03, -8.97], [130.25, -9.5], [130.03, -10.03], [129.5, -10.25], [129.25, -10.15], [129.0, -10.25], [128.47, -10.03], [128.25, -9.5]]]]}, "2017-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[128.47, -10.03], [128.25, -9.5], [128.47, -8.97], [129.0, -8.75], [129.25, -8.85], [129.5, -8.75], [130.03, -8.97], [130.25, -9.5], [130.03, -10.03], [129.5, -10.25], [129.25, -10.15], [129.0, -10.25], [128.47, -10.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1360785169283076}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.2070613642151071}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.613928989975705, 26.544053171874282, 26.532802635612143, 26.440488310782655, 26.439720937522054, 26.486239116997012, 26.63363721580987, 26.361771870283746]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.50712992949832, 26.356350129441864, 26.036506994518902, 25.373234173273147, 25.10048499164867, 25.31379289776538, 26.17842205042507, 26.33624615610097]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9951682067896728, -1.1045889118980579, -1.1108552448067104, -1.2659337769695753, -1.2671331926977905, -1.2882011433693692, -1.1880779588224566, -1.349527807635667]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0579987596870524, -1.3508435884144774, -1.3035056108276422, -2.039010826807271, -2.1360785169283076, -1.9252672180901982, -1.8228819773046325, -1.3721712168407407]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4494969312264818, -1.6171093848334321, -1.6151743121147233, -1.8537800382108327, -1.8458900907438611, -1.880839811049338, -1.443196837211101, -2.3847694692328956]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5913235930734755, -1.942325494093993, -1.8650406976729326, -2.429671399611496, -2.645995918639316, -2.2587433191237274, -1.5745540663018531, -2.431840213232384]}}