{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:10:08.005708", "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-03_to_2026-Feb-05_141.0_-13.0"}, "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": 2026020000101}, "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 03 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 05 2026"}, "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": 72148.9341643849}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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"]}, "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": -13.0}, "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": 141.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "141.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 141.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.25}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[138.75, -14.5], [138.97, -13.97], [139.32, -13.82], [139.35, -13.75], [139.25, -13.5], [139.35, -13.25], [139.25, -13.0], [139.47, -12.47], [139.82, -12.32], [139.85, -12.25], [139.75, -12.0], [139.85, -11.75], [139.75, -11.5], [139.97, -10.97], [140.5, -10.75], [141.03, -10.97], [141.18, -11.32], [141.25, -11.35], [141.5, -11.25], [142.03, -11.47], [142.25, -12.0], [142.15, -12.25], [142.25, -12.5], [142.15, -12.75], [142.25, -13.0], [142.15, -13.25], [142.25, -13.5], [142.03, -14.03], [141.68, -14.18], [141.53, -14.53], [141.18, -14.68], [141.03, -15.03], [140.68, -15.18], [140.53, -15.53], [140.18, -15.68], [140.03, -16.03], [139.5, -16.25], [138.97, -16.03], [138.75, -15.5], [138.85, -15.25], [138.75, -15.0], [138.85, -14.75], [138.75, -14.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-02-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, -15.0], [138.85, -14.75], [138.75, -14.5], [138.97, -13.97], [139.32, -13.82], [139.35, -13.75], [139.25, -13.5], [139.35, -13.25], [139.25, -13.0], [139.47, -12.47], [139.82, -12.32], [139.85, -12.25], [139.75, -12.0], [139.85, -11.75], [139.75, -11.5], [139.97, -10.97], [140.5, -10.75], [141.03, -10.97], [141.18, -11.32], [141.25, -11.35], [141.5, -11.25], [142.03, -11.47], [142.25, -12.0], [142.15, -12.25], [142.25, -12.5], [142.15, -12.75], [142.25, -13.0], [142.15, -13.25], [142.25, -13.5], [142.03, -14.03], [141.68, -14.18], [141.53, -14.53], [141.18, -14.68], [141.03, -15.03], [140.68, -15.18], [140.53, -15.53], [140.18, -15.68], [140.03, -16.03], [139.5, -16.25], [138.97, -16.03], [138.75, -15.5], [138.85, -15.25], [138.75, -15.0]]]]}, "2026-02-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, -15.0], [138.85, -14.75], [138.75, -14.5], [138.97, -13.97], [139.32, -13.82], [139.35, -13.75], [139.25, -13.5], [139.35, -13.25], [139.25, -13.0], [139.47, -12.47], [139.82, -12.32], [139.85, -12.25], [139.75, -12.0], [139.85, -11.75], [139.75, -11.5], [139.97, -10.97], [140.5, -10.75], [141.03, -10.97], [141.18, -11.32], [141.25, -11.35], [141.5, -11.25], [142.03, -11.47], [142.25, -12.0], [142.15, -12.25], [142.25, -12.5], [142.15, -12.75], [142.25, -13.0], [142.15, -13.25], [142.25, -13.5], [142.03, -14.03], [141.68, -14.18], [141.53, -14.53], [141.18, -14.68], [141.03, -15.03], [140.68, -15.18], [140.53, -15.53], [140.18, -15.68], [140.03, -16.03], [139.5, -16.25], [138.97, -16.03], [138.75, -15.5], [138.85, -15.25], [138.75, -15.0]]]]}, "2026-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[138.75, -15.0], [138.85, -14.75], [138.75, -14.5], [138.97, -13.97], [139.32, -13.82], [139.35, -13.75], [139.25, -13.5], [139.35, -13.25], [139.25, -13.0], [139.47, -12.47], [139.82, -12.32], [139.85, -12.25], [139.75, -12.0], [139.85, -11.75], [139.75, -11.5], [139.97, -10.97], [140.5, -10.75], [141.03, -10.97], [141.18, -11.32], [141.25, -11.35], [141.5, -11.25], [142.03, -11.47], [142.25, -12.0], [142.15, -12.25], [142.25, -12.5], [142.15, -12.75], [142.25, -13.0], [142.15, -13.25], [142.25, -13.5], [142.03, -14.03], [141.68, -14.18], [141.53, -14.53], [141.18, -14.68], [141.03, -15.03], [140.68, -15.18], [140.53, -15.53], [140.18, -15.68], [140.03, -16.03], [139.5, -16.25], [138.97, -16.03], [138.75, -15.5], [138.85, -15.25], [138.75, -15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.3212701235002555}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0205343433199436}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.858969624837243, 26.77279179890951, 26.79420454237203]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.541953023274743, 26.411809539794945, 26.46643218994143]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9896569768915834, -1.0570822264882243, -1.0148638265800234]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1810206605146618, -1.3212701235002555, -1.2225963236173243]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4213363572059643, -1.5136491496692124, -1.4548003258691462]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7084842429226716, -1.8030858543252384, -1.684664298672132]}}