{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:34.491614", "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": "2026-Feb-13_to_2026-Feb-19_123.5_-21.0"}, "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": 2026020000290}, "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": "February 13 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2026"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 263696.89630227356}, "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", "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": -21.0}, "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": 123.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "123.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 122.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 128.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -23.75}, "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": {"2026-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[124.97, -19.03], [124.75, -18.5], [124.97, -17.97], [125.5, -17.75], [126.03, -17.97], [126.25, -18.5], [126.03, -19.03], [125.5, -19.25], [124.97, -19.03]]], [[[122.97, -16.53], [122.75, -16.0], [122.97, -15.47], [123.5, -15.25], [124.03, -15.47], [124.25, -16.0], [124.03, -16.53], [123.5, -16.75], [122.97, -16.53]]]]}, "2026-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[122.35, -19.75], [122.25, -19.5], [122.35, -19.25], [122.25, -19.0], [122.47, -18.47], [123.0, -18.25], [123.43, -18.43], [123.25, -18.0], [123.35, -17.75], [123.25, -17.5], [123.35, -17.25], [123.25, -17.0], [123.35, -16.75], [123.32, -16.68], [122.97, -16.53], [122.75, -16.0], [122.97, -15.47], [123.5, -15.25], [124.03, -15.47], [124.18, -15.82], [124.53, -15.97], [124.75, -16.5], [124.65, -16.75], [124.68, -16.82], [124.75, -16.85], [125.0, -16.75], [125.53, -16.97], [125.68, -17.32], [126.03, -17.47], [126.25, -18.0], [126.15, -18.25], [126.25, -18.5], [126.15, -18.75], [126.25, -19.0], [126.15, -19.25], [126.25, -19.5], [126.15, -19.75], [126.25, -20.0], [126.03, -20.53], [125.68, -20.68], [125.65, -20.75], [125.75, -21.0], [125.53, -21.53], [125.0, -21.75], [124.75, -21.65], [124.5, -21.75], [124.25, -21.65], [124.0, -21.75], [123.75, -21.65], [123.5, -21.75], [122.97, -21.53], [122.82, -21.18], [122.47, -21.03], [122.25, -20.5], [122.35, -20.25], [122.25, -20.0], [122.35, -19.75]], [[123.82, -18.68], [123.57, -18.57], [123.68, -18.82], [123.75, -18.85], [123.88, -18.8], [123.82, -18.68]]]]}, "2026-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.97, -19.97], [122.32, -19.82], [122.35, -19.75], [122.25, -19.5], [122.35, -19.25], [122.25, -19.0], [122.47, -18.47], [122.88, -18.3], [122.75, -18.0], [122.97, -17.47], [123.32, -17.32], [123.35, -17.25], [123.25, -17.0], [123.35, -16.75], [123.32, -16.68], [122.97, -16.53], [122.75, -16.0], [122.97, -15.47], [123.5, -15.25], [124.03, -15.47], [124.18, -15.82], [124.53, -15.97], [124.75, -16.5], [124.65, -16.75], [124.68, -16.82], [124.75, -16.85], [125.0, -16.75], [125.53, -16.97], [125.68, -17.32], [126.03, -17.47], [126.18, -17.82], [126.53, -17.97], [126.68, -18.32], [126.75, -18.35], [127.0, -18.25], [127.53, -18.47], [127.75, -19.0], [127.65, -19.25], [127.68, -19.32], [128.03, -19.47], [128.18, -19.82], [128.53, -19.97], [128.75, -20.5], [128.65, -20.75], [128.75, -21.0], [128.65, -21.25], [128.75, -21.5], [128.53, -22.03], [128.0, -22.25], [127.75, -22.15], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.25, -22.15], [126.0, -22.25], [125.75, -22.15], [125.68, -22.18], [125.65, -22.25], [125.75, -22.5], [125.53, -23.03], [125.0, -23.25], [124.75, -23.15], [124.5, -23.25], [123.97, -23.03], [123.82, -22.68], [123.47, -22.53], [123.32, -22.18], [123.25, -22.15], [123.0, -22.25], [122.47, -22.03], [122.32, -21.68], [121.97, -21.53], [121.75, -21.0], [121.85, -20.75], [121.75, -20.5], [121.97, -19.97]], [[123.82, -18.68], [123.75, -18.65], [123.63, -18.7], [123.68, -18.82], [123.75, -18.85], [123.88, -18.8], [123.82, -18.68]]]]}, "2026-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.85, -21.25], [121.75, -21.0], [121.85, -20.75], [121.75, -20.5], [121.97, -19.97], [122.32, -19.82], [122.35, -19.75], [122.25, -19.5], [122.35, -19.25], [122.25, -19.0], [122.47, -18.47], [122.88, -18.3], [122.75, -18.0], [122.97, -17.47], [123.32, -17.32], [123.35, -17.25], [123.25, -17.0], [123.35, -16.75], [123.25, -16.5], [123.47, -15.97], [124.0, -15.75], [124.53, -15.97], [124.75, -16.5], [124.65, -16.75], [124.68, -16.82], [124.75, -16.85], [125.0, -16.75], [125.53, -16.97], [125.68, -17.32], [126.03, -17.47], [126.18, -17.82], [126.53, -17.97], [126.68, -18.32], [126.75, -18.35], [127.0, -18.25], [127.53, -18.47], [127.75, -19.0], [127.65, -19.25], [127.68, -19.32], [128.03, -19.47], [128.18, -19.82], [128.53, -19.97], [128.75, -20.5], [128.65, -20.75], [128.75, -21.0], [128.65, -21.25], [128.75, -21.5], [128.53, -22.03], [128.0, -22.25], [127.75, -22.15], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.25, -22.15], [126.0, -22.25], [125.75, -22.15], [125.68, -22.18], [125.65, -22.25], [125.75, -22.5], [125.53, -23.03], [125.0, -23.25], [124.75, -23.15], [124.5, -23.25], [124.25, -23.15], [124.0, -23.25], [123.75, -23.15], [123.5, -23.25], [122.97, -23.03], [122.82, -22.68], [122.75, -22.65], [122.5, -22.75], [121.97, -22.53], [121.75, -22.0], [121.85, -21.75], [121.75, -21.5], [121.85, -21.25]], [[123.82, -18.68], [123.75, -18.65], [123.63, -18.7], [123.68, -18.82], [123.75, -18.85], [123.88, -18.8], [123.82, -18.68]]]]}, "2026-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.85, -21.25], [121.75, -21.0], [121.85, -20.75], [121.75, -20.5], [121.97, -19.97], [122.32, -19.82], [122.35, -19.75], [122.25, -19.5], [122.47, -18.97], [123.0, -18.75], [123.25, -18.85], [123.5, -18.75], [122.97, -18.53], [122.75, -18.0], [122.97, -17.47], [123.32, -17.32], [123.35, -17.25], [123.25, -17.0], [123.47, -16.47], [124.0, -16.25], [124.53, -16.47], [124.68, -16.82], [124.75, -16.85], [125.0, -16.75], [125.53, -16.97], [125.68, -17.32], [126.03, -17.47], [126.18, -17.82], [126.53, -17.97], [126.68, -18.32], [126.75, -18.35], [127.0, -18.25], [127.53, -18.47], [127.75, -19.0], [127.65, -19.25], [127.68, -19.32], [128.03, -19.47], [128.18, -19.82], [128.53, -19.97], [128.75, -20.5], [128.65, -20.75], [128.75, -21.0], [128.65, -21.25], [128.75, -21.5], [128.53, -22.03], [128.0, -22.25], [127.75, -22.15], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.25, -22.15], [126.0, -22.25], [125.75, -22.15], [125.68, -22.18], [125.65, -22.25], [125.75, -22.5], [125.53, -23.03], [125.0, -23.25], [124.75, -23.15], [124.68, -23.18], [124.53, -23.53], [124.18, -23.68], [124.03, -24.03], [123.5, -24.25], [122.97, -24.03], [122.82, -23.68], [122.47, -23.53], [122.25, -23.0], [122.35, -22.75], [122.32, -22.68], [121.97, -22.53], [121.75, -22.0], [121.85, -21.75], [121.75, -21.5], [121.85, -21.25]], [[123.75, -18.85], [123.88, -18.8], [123.82, -18.68], [123.75, -18.65], [123.5, -18.75], [123.75, -18.85]]]]}, "2026-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.85, -21.25], [121.75, -21.0], [121.85, -20.75], [121.75, -20.5], [121.97, -19.97], [122.32, -19.82], [122.35, -19.75], [122.25, -19.5], [122.47, -18.97], [123.0, -18.75], [123.25, -18.85], [123.5, -18.75], [122.97, -18.53], [122.75, -18.0], [122.97, -17.47], [123.5, -17.25], [124.0, -17.46], [124.32, -17.32], [124.47, -16.97], [125.0, -16.75], [125.53, -16.97], [125.75, -17.5], [125.65, -17.75], [125.68, -17.82], [126.03, -17.97], [126.18, -18.32], [126.53, -18.47], [126.7, -18.87], [127.0, -18.75], [127.53, -18.97], [127.68, -19.32], [128.03, -19.47], [128.18, -19.82], [128.53, -19.97], [128.75, -20.5], [128.53, -21.03], [128.18, -21.18], [128.15, -21.25], [128.25, -21.5], [128.03, -22.03], [127.5, -22.25], [127.25, -22.15], [127.0, -22.25], [126.75, -22.15], [126.5, -22.25], [126.25, -22.15], [126.0, -22.25], [125.75, -22.15], [125.68, -22.18], [125.65, -22.25], [125.75, -22.5], [125.53, -23.03], [125.0, -23.25], [124.75, -23.15], [124.68, -23.18], [124.53, -23.53], [124.18, -23.68], [124.03, -24.03], [123.5, -24.25], [122.97, -24.03], [122.82, -23.68], [122.47, -23.53], [122.25, -23.0], [122.35, -22.75], [122.32, -22.68], [121.97, -22.53], [121.75, -22.0], [121.85, -21.75], [121.75, -21.5], [121.85, -21.25]], [[123.75, -18.85], [123.88, -18.8], [123.8, -18.62], [123.5, -18.75], [123.75, -18.85]]]]}, "2026-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[121.85, -21.25], [121.75, -21.0], [121.85, -20.75], [121.75, -20.5], [121.97, -19.97], [122.5, -19.75], [122.75, -19.85], [123.0, -19.75], [123.25, -19.85], [123.5, -19.75], [124.0, -19.96], [124.32, -19.82], [124.47, -19.47], [124.82, -19.32], [124.97, -18.97], [125.32, -18.82], [125.47, -18.47], [126.0, -18.25], [126.53, -18.47], [126.75, -19.0], [126.65, -19.25], [126.75, -19.5], [126.53, -20.03], [126.18, -20.18], [126.15, -20.25], [126.25, -20.5], [126.03, -21.03], [125.68, -21.18], [125.65, -21.25], [125.75, -21.5], [125.65, -21.75], [125.75, -22.0], [125.53, -22.53], [125.18, -22.68], [125.03, -23.03], [124.68, -23.18], [124.53, -23.53], [124.18, -23.68], [124.03, -24.03], [123.5, -24.25], [122.97, -24.03], [122.82, -23.68], [122.47, -23.53], [122.25, -23.0], [122.35, -22.75], [122.32, -22.68], [121.97, -22.53], [121.75, -22.0], [121.85, -21.75], [121.75, -21.5], [121.85, -21.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.912731239707227}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.929193469505991}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.3881991068522, 26.765725604907914, 26.22591069539385, 26.426754656025025, 26.204913016622413, 25.791374070909285, 26.168537875338757]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [27.20676193237307, 26.055104827880882, 25.355901336669945, 25.734756724039755, 24.251699066162132, 22.20026295979818, 25.134182230631552]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3062593707927306, -3.9308514693022216, -4.821129822171664, -4.674341622127422, -4.980321709269166, -5.545553197947028, -5.520220841564926]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.4076863748348387, -5.040417503254162, -6.313680934161596, -6.018550238392379, -7.905882959197413, -9.912731239707227, -6.999948558411631]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3108601911174302, -1.480177974596811, -1.622872680434081, -1.5442126477626028, -1.5867921513454322, -1.7161395448645738, -1.6375591304033328]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3756299660417488, -1.6561281594665884, -1.9196090756899675, -1.814482065871491, -2.110320699099031, -2.5715528494388353, -2.03442825478021]}}