{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:22:56.149375", "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": "2021-Jan-25_to_2021-Jan-29_143.5_-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": 2021010000958}, "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": "January 25 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 29 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 53613.77993279416}, "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": 143.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "143.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 142.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 145.25}, "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": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -14.47], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.5, -14.25], [144.03, -14.47], [144.25, -15.0], [144.15, -15.25], [144.25, -15.5], [144.03, -16.03], [143.5, -16.25], [143.25, -16.15], [143.0, -16.25], [142.75, -16.15], [142.5, -16.25], [141.97, -16.03], [141.75, -15.5], [141.85, -15.25], [141.75, -15.0], [141.97, -14.47]]]]}, "2021-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -14.47], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.32, -14.32], [143.47, -13.97], [144.0, -13.75], [144.53, -13.97], [144.68, -14.32], [145.03, -14.47], [145.18, -14.82], [145.53, -14.97], [145.75, -15.5], [145.65, -15.75], [145.75, -16.0], [145.53, -16.53], [145.18, -16.68], [145.03, -17.03], [144.5, -17.25], [143.97, -17.03], [143.82, -16.68], [143.75, -16.65], [143.5, -16.75], [143.25, -16.65], [143.0, -16.75], [142.47, -16.53], [142.32, -16.18], [141.97, -16.03], [141.75, -15.5], [141.85, -15.25], [141.75, -15.0], [141.97, -14.47]]]]}, "2021-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -14.47], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.32, -14.32], [143.47, -13.97], [144.0, -13.75], [144.53, -13.97], [144.68, -14.32], [145.03, -14.47], [145.18, -14.82], [145.53, -14.97], [145.75, -15.5], [145.65, -15.75], [145.75, -16.0], [145.53, -16.53], [145.18, -16.68], [145.03, -17.03], [144.5, -17.25], [143.97, -17.03], [143.82, -16.68], [143.75, -16.65], [143.5, -16.75], [143.25, -16.65], [143.0, -16.75], [142.47, -16.53], [142.32, -16.18], [141.97, -16.03], [141.75, -15.5], [141.85, -15.25], [141.75, -15.0], [141.97, -14.47]]]]}, "2021-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -14.47], [142.5, -14.25], [142.75, -14.35], [143.0, -14.25], [143.25, -14.35], [143.32, -14.32], [143.47, -13.97], [144.0, -13.75], [144.53, -13.97], [144.68, -14.32], [145.03, -14.47], [145.18, -14.82], [145.53, -14.97], [145.75, -15.5], [145.65, -15.75], [145.75, -16.0], [145.53, -16.53], [145.18, -16.68], [145.03, -17.03], [144.5, -17.25], [143.97, -17.03], [143.82, -16.68], [143.75, -16.65], [143.5, -16.75], [143.25, -16.65], [143.0, -16.75], [142.47, -16.53], [142.32, -16.18], [141.97, -16.03], [141.75, -15.5], [141.85, -15.25], [141.75, -15.0], [141.97, -14.47]]]]}, "2021-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.47, -13.97], [144.0, -13.75], [144.53, -13.97], [144.68, -14.32], [145.03, -14.47], [145.18, -14.82], [145.53, -14.97], [145.75, -15.5], [145.53, -16.03], [145.0, -16.25], [144.47, -16.03], [144.32, -15.68], [144.25, -15.65], [144.0, -15.75], [143.47, -15.53], [143.25, -15.0], [143.35, -14.75], [143.25, -14.5], [143.47, -13.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3588860027327314}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.2509512688602777}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.883793740558588, 24.91379114098652, 25.23329166602184, 25.198677674861585, 25.99903538261981]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.621434986565816, 22.69901204803665, 23.947869550096073, 23.364885794448924, 25.408564678055882]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8000687206499417, -2.534421616205031, -2.2215144657572177, -2.2691313319201862, -1.7023138583185755]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9134000487372873, -3.3588860027327314, -3.026704310504897, -2.6922429127343435, -2.2870340652430627]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4937515544899502, -2.192045377649003, -1.9267025369175335, -2.008018422325689, -1.7001991250473412]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5809501283812446, -2.9411446175478004, -2.4828262522789677, -2.3252042526576315, -2.1680520137991324]}}