{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-05-20 10:52:29.534425", "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-Apr-26_to_2026-Apr-28_133.5_-15.5"}, "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": 2026040000804}, "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 26 2026"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 28 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": 56597.03480625701}, "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": []}, "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": -15.5}, "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": 133.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "133.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 132.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 135.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2026-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -14.97], [132.82, -14.82], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.53, -13.47], [134.68, -13.82], [135.03, -13.97], [135.25, -14.5], [135.15, -14.75], [135.25, -15.0], [135.15, -15.25], [135.18, -15.32], [135.53, -15.47], [135.68, -15.82], [136.03, -15.97], [136.25, -16.5], [136.03, -17.03], [135.5, -17.25], [135.25, -17.15], [135.0, -17.25], [134.75, -17.15], [134.5, -17.25], [133.97, -17.03], [133.82, -16.68], [133.75, -16.65], [133.5, -16.75], [133.25, -16.65], [133.0, -16.75], [132.47, -16.53], [132.25, -16.0], [132.35, -15.75], [132.25, -15.5], [132.47, -14.97]]]]}, "2026-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -14.97], [132.82, -14.82], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.53, -13.47], [134.68, -13.82], [135.03, -13.97], [135.25, -14.5], [135.15, -14.75], [135.25, -15.0], [135.15, -15.25], [135.18, -15.32], [135.53, -15.47], [135.68, -15.82], [136.03, -15.97], [136.25, -16.5], [136.03, -17.03], [135.5, -17.25], [135.25, -17.15], [135.0, -17.25], [134.75, -17.15], [134.5, -17.25], [133.97, -17.03], [133.82, -16.68], [133.75, -16.65], [133.5, -16.75], [133.25, -16.65], [133.0, -16.75], [132.47, -16.53], [132.25, -16.0], [132.35, -15.75], [132.25, -15.5], [132.47, -14.97]]]]}, "2026-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.47, -14.97], [132.82, -14.82], [132.85, -14.75], [132.75, -14.5], [132.97, -13.97], [133.32, -13.82], [133.47, -13.47], [134.0, -13.25], [134.53, -13.47], [134.68, -13.82], [135.03, -13.97], [135.25, -14.5], [135.15, -14.75], [135.25, -15.0], [135.15, -15.25], [135.18, -15.32], [135.53, -15.47], [135.68, -15.82], [136.03, -15.97], [136.25, -16.5], [136.03, -17.03], [135.5, -17.25], [135.25, -17.15], [135.0, -17.25], [134.75, -17.15], [134.5, -17.25], [133.97, -17.03], [133.82, -16.68], [133.75, -16.65], [133.5, -16.75], [133.25, -16.65], [133.0, -16.75], [132.47, -16.53], [132.25, -16.0], [132.35, -15.75], [132.25, -15.5], [132.47, -14.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.797163419401215}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.487323507690502}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.98604160777313, 21.768287444532973, 22.79762942665502]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.73602447509768, 20.589011128743493, 21.75122985839846]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.114781025810675, -4.241748238298394, -3.1054412589624367]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.6658068177371774, -4.797163419401215, -3.68363815939216]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6492505589966993, -2.150873470657049, -1.4778544674344374]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.86261741519052, -2.3602468107564563, -1.7312461249428899]}}