{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:37.263950", "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-Mar-18_to_2021-Mar-21_136.0_-16.5"}, "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": 2021030000732}, "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": "March 18 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 21 2021"}, "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": 53612.64536686947}, "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": -16.5}, "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": 136.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "136.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 133.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 136.75}, "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": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -14.47], [133.82, -14.32], [133.97, -13.97], [134.5, -13.75], [134.75, -13.85], [135.0, -13.75], [135.25, -13.85], [135.5, -13.75], [136.03, -13.97], [136.25, -14.5], [136.13, -14.8], [136.53, -14.97], [136.68, -15.32], [137.03, -15.47], [137.25, -16.0], [137.03, -16.53], [136.68, -16.68], [136.53, -17.03], [136.0, -17.25], [135.75, -17.15], [135.5, -17.25], [134.97, -17.03], [134.82, -16.68], [134.75, -16.65], [134.5, -16.75], [133.97, -16.53], [133.82, -16.18], [133.47, -16.03], [133.25, -15.5], [133.35, -15.25], [133.25, -15.0], [133.47, -14.47]]]]}, "2021-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -14.47], [133.82, -14.32], [133.97, -13.97], [134.5, -13.75], [134.75, -13.85], [135.0, -13.75], [135.25, -13.85], [135.5, -13.75], [136.03, -13.97], [136.25, -14.5], [136.13, -14.8], [136.53, -14.97], [136.68, -15.32], [137.03, -15.47], [137.25, -16.0], [137.03, -16.53], [136.68, -16.68], [136.53, -17.03], [136.0, -17.25], [135.75, -17.15], [135.5, -17.25], [134.97, -17.03], [134.82, -16.68], [134.75, -16.65], [134.5, -16.75], [133.97, -16.53], [133.82, -16.18], [133.47, -16.03], [133.25, -15.5], [133.35, -15.25], [133.25, -15.0], [133.47, -14.47]]]]}, "2021-03-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[133.47, -14.47], [133.82, -14.32], [133.97, -13.97], [134.5, -13.75], [134.75, -13.85], [135.0, -13.75], [135.25, -13.85], [135.5, -13.75], [136.03, -13.97], [136.25, -14.5], [136.13, -14.8], [136.53, -14.97], [136.68, -15.32], [137.03, -15.47], [137.25, -16.0], [137.03, -16.53], [136.68, -16.68], [136.53, -17.03], [136.0, -17.25], [135.75, -17.15], [135.5, -17.25], [134.97, -17.03], [134.82, -16.68], [134.75, -16.65], [134.5, -16.75], [133.97, -16.53], [133.82, -16.18], [133.47, -16.03], [133.25, -15.5], [133.35, -15.25], [133.25, -15.0], [133.47, -14.47]]]]}, "2021-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[136.0, -15.25], [136.25, -15.35], [136.5, -15.25], [137.03, -15.47], [137.25, -16.0], [137.03, -16.53], [136.68, -16.68], [136.53, -17.03], [136.0, -17.25], [135.75, -17.15], [135.5, -17.25], [134.97, -17.03], [134.75, -16.5], [134.97, -15.97], [135.32, -15.82], [135.47, -15.47], [136.0, -15.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.111512111183458}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.5137946974000394}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.86415531775708, 25.97429772443553, 25.106087213522528, 26.116285644415484]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.253098567230552, 25.506679755230437, 24.36509997482085, 25.924027661431353]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3452676552128335, -2.2217420737304425, -3.0877142799145867, -2.0037650724401885]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.20334234113227, -2.8534755660597284, -4.111512111183458, -2.35425081866714]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5199957709269984, -1.4533074046161656, -2.0451522368264885, -1.3988912981581614]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7696372503409599, -1.6706260136791886, -2.4552316759755834, -1.5606575965680707]}}