{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:47.788859", "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": "2015-Apr-26_to_2015-Apr-28_146.5_-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": 2015040000968}, "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 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 28 2015"}, "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": 60882.40490274625}, "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": ["E.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": []}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -17.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.5, -17.25], [146.03, -17.47], [146.18, -17.82], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.54, -20.0], [147.75, -20.5], [147.65, -20.75], [147.75, -21.0], [147.65, -21.25], [147.75, -21.5], [147.53, -22.03], [147.18, -22.18], [147.03, -22.53], [146.5, -22.75], [146.25, -22.65], [146.0, -22.75], [145.47, -22.53], [145.25, -22.0], [145.35, -21.75], [145.32, -21.68], [144.97, -21.53], [144.75, -21.0], [144.85, -20.75], [144.75, -20.5], [144.85, -20.25], [144.75, -20.0], [144.97, -19.47], [145.38, -19.3], [145.32, -19.18], [145.25, -19.15], [145.0, -19.25], [144.47, -19.03], [144.25, -18.5], [144.47, -17.97], [144.82, -17.82], [144.97, -17.47], [145.5, -17.25]]]]}, "2015-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.5, -17.25], [146.03, -17.47], [146.18, -17.82], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.54, -20.0], [147.75, -20.5], [147.65, -20.75], [147.75, -21.0], [147.65, -21.25], [147.75, -21.5], [147.53, -22.03], [147.18, -22.18], [147.03, -22.53], [146.5, -22.75], [146.25, -22.65], [146.0, -22.75], [145.47, -22.53], [145.25, -22.0], [145.35, -21.75], [145.32, -21.68], [144.97, -21.53], [144.75, -21.0], [144.85, -20.75], [144.75, -20.5], [144.85, -20.25], [144.75, -20.0], [144.97, -19.47], [145.38, -19.3], [145.32, -19.18], [145.25, -19.15], [145.0, -19.25], [144.47, -19.03], [144.25, -18.5], [144.47, -17.97], [144.82, -17.82], [144.97, -17.47], [145.5, -17.25]]]]}, "2015-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.5, -17.25], [146.03, -17.47], [146.18, -17.82], [146.53, -17.97], [146.75, -18.5], [146.65, -18.75], [146.68, -18.82], [146.75, -18.85], [147.0, -18.75], [147.53, -18.97], [147.75, -19.5], [147.54, -20.0], [147.75, -20.5], [147.65, -20.75], [147.75, -21.0], [147.65, -21.25], [147.75, -21.5], [147.53, -22.03], [147.18, -22.18], [147.03, -22.53], [146.5, -22.75], [146.25, -22.65], [146.0, -22.75], [145.47, -22.53], [145.25, -22.0], [145.35, -21.75], [145.32, -21.68], [144.97, -21.53], [144.75, -21.0], [144.85, -20.75], [144.75, -20.5], [144.85, -20.25], [144.75, -20.0], [144.97, -19.47], [145.38, -19.3], [145.32, -19.18], [145.25, -19.15], [145.0, -19.25], [144.47, -19.03], [144.25, -18.5], [144.47, -17.97], [144.82, -17.82], [144.97, -17.47], [145.5, -17.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.693993001021852}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.761497050168399}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.17150321995831, 17.886508342615855, 19.11305670288249]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.358013915274455, 16.484012466705508, 17.84944907636782]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.056980100816055, -4.277424349953936, -2.9500866997352064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.304914517251689, -5.693993001021852, -4.0832026964313854]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.2041626701409855, -2.30462299724991, -1.5301331605427664]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.6947286664698167, -2.6247454350100003, -1.8060202773898963]}}