{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:10.181996", "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": "2012-Apr-16_to_2012-Apr-19_137.5_-13.5"}, "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": 2012040000914}, "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 16 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 19 2012"}, "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": 63212.741406567206}, "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": ["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": -13.5}, "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": 137.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "137.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 135.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-04-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.85, -13.25], [136.75, -13.0], [136.85, -12.75], [136.75, -12.5], [136.85, -12.25], [136.75, -12.0], [136.85, -11.75], [136.75, -11.5], [136.97, -10.97], [137.5, -10.75], [138.03, -10.97], [138.18, -11.32], [138.53, -11.47], [138.68, -11.82], [139.03, -11.97], [139.25, -12.5], [139.03, -13.03], [138.68, -13.18], [138.65, -13.25], [138.75, -13.5], [138.53, -14.03], [138.18, -14.18], [138.03, -14.53], [137.5, -14.75], [136.97, -14.53], [136.75, -14.0], [136.85, -13.75], [136.75, -13.5], [136.85, -13.25]]]]}, "2012-04-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.47, -12.97], [135.82, -12.82], [135.97, -12.47], [136.32, -12.32], [136.47, -11.97], [136.82, -11.82], [136.85, -11.75], [136.75, -11.5], [136.97, -10.97], [137.5, -10.75], [138.03, -10.97], [138.18, -11.32], [138.53, -11.47], [138.68, -11.82], [139.03, -11.97], [139.25, -12.5], [139.03, -13.03], [138.68, -13.18], [138.65, -13.25], [138.75, -13.5], [138.53, -14.03], [138.18, -14.18], [138.03, -14.53], [137.68, -14.68], [137.53, -15.03], [137.0, -15.25], [136.47, -15.03], [136.32, -14.68], [136.25, -14.65], [136.0, -14.75], [135.47, -14.53], [135.25, -14.0], [135.35, -13.75], [135.25, -13.5], [135.47, -12.97]]]]}, "2012-04-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.47, -12.97], [135.82, -12.82], [135.97, -12.47], [136.32, -12.32], [136.47, -11.97], [136.82, -11.82], [136.85, -11.75], [136.75, -11.5], [136.97, -10.97], [137.5, -10.75], [138.03, -10.97], [138.18, -11.32], [138.53, -11.47], [138.68, -11.82], [139.03, -11.97], [139.25, -12.5], [139.03, -13.03], [138.68, -13.18], [138.65, -13.25], [138.75, -13.5], [138.53, -14.03], [138.18, -14.18], [138.03, -14.53], [137.68, -14.68], [137.53, -15.03], [137.0, -15.25], [136.47, -15.03], [136.32, -14.68], [136.25, -14.65], [136.0, -14.75], [135.47, -14.53], [135.25, -14.0], [135.35, -13.75], [135.25, -13.5], [135.47, -12.97]]]]}, "2012-04-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.47, -12.97], [135.82, -12.82], [135.97, -12.47], [136.32, -12.32], [136.47, -11.97], [137.0, -11.75], [137.53, -11.97], [137.68, -12.32], [138.03, -12.47], [138.25, -13.0], [138.15, -13.25], [138.25, -13.5], [138.15, -13.75], [138.25, -14.0], [138.03, -14.53], [137.68, -14.68], [137.53, -15.03], [137.0, -15.25], [136.47, -15.03], [136.32, -14.68], [136.25, -14.65], [136.0, -14.75], [135.47, -14.53], [135.25, -14.0], [135.35, -13.75], [135.25, -13.5], [135.47, -12.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.7243958193182607}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.253589457182194}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.542026921901368, 26.458932461579707, 26.23538538388749, 26.21250118042576]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.412892696082622, 26.070334788395996, 25.871171454393163, 25.952895010899]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.0613506512131865, -1.159073699623786, -1.3482930852447095, -1.4159495791108725]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3352228665195298, -1.4995242691449562, -1.7243958193182607, -1.7243066670185385]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5524444529005423, -1.5881727860704824, -1.867432711022759, -1.851759543156052]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8842321540199916, -1.8667405650344344, -2.1762564852300916, -2.294721905490631]}}