{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:15.179481", "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-Feb-17_to_2021-Feb-21_133.0_-15.0"}, "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": 2021020000648}, "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": "February 17 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 21 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": 59614.11698938318}, "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": -15.0}, "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": 133.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "133.0\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": 137.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -16.25}, "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": {"2021-02-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[135.47, -13.97], [136.0, -13.75], [136.53, -13.97], [136.68, -14.32], [137.03, -14.47], [137.25, -15.0], [137.15, -15.25], [137.25, -15.5], [137.03, -16.03], [136.5, -16.25], [135.97, -16.03], [135.82, -15.68], [135.47, -15.53], [135.25, -15.0], [135.35, -14.75], [135.25, -14.5], [135.47, -13.97]]]]}, "2021-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -15.0], [132.47, -14.47], [132.82, -14.32], [132.97, -13.97], [133.5, -13.75], [134.03, -13.97], [134.18, -14.32], [134.25, -14.35], [134.5, -14.25], [134.75, -14.35], [135.0, -14.25], [135.3, -14.37], [135.47, -13.97], [136.0, -13.75], [136.53, -13.97], [136.68, -14.32], [137.03, -14.47], [137.25, -15.0], [137.15, -15.25], [137.18, -15.32], [137.53, -15.47], [137.75, -16.0], [137.53, -16.53], [137.0, -16.75], [136.75, -16.65], [136.5, -16.75], [136.25, -16.65], [136.0, -16.75], [135.75, -16.65], [135.5, -16.75], [135.25, -16.65], [135.0, -16.75], [134.47, -16.53], [134.32, -16.18], [134.25, -16.15], [134.0, -16.25], [133.75, -16.15], [133.5, -16.25], [132.97, -16.03], [132.82, -15.68], [132.47, -15.53], [132.25, -15.0]]]]}, "2021-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -15.0], [132.47, -14.47], [132.82, -14.32], [132.97, -13.97], [133.5, -13.75], [134.03, -13.97], [134.18, -14.32], [134.25, -14.35], [134.5, -14.25], [134.75, -14.35], [135.0, -14.25], [135.3, -14.37], [135.47, -13.97], [136.0, -13.75], [136.53, -13.97], [136.68, -14.32], [137.03, -14.47], [137.25, -15.0], [137.15, -15.25], [137.18, -15.32], [137.53, -15.47], [137.75, -16.0], [137.53, -16.53], [137.0, -16.75], [136.75, -16.65], [136.5, -16.75], [136.25, -16.65], [136.0, -16.75], [135.75, -16.65], [135.5, -16.75], [135.25, -16.65], [135.0, -16.75], [134.47, -16.53], [134.32, -16.18], [134.25, -16.15], [134.0, -16.25], [133.75, -16.15], [133.5, -16.25], [132.97, -16.03], [132.82, -15.68], [132.47, -15.53], [132.25, -15.0]]]]}, "2021-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -15.0], [132.47, -14.47], [132.82, -14.32], [132.97, -13.97], [133.5, -13.75], [134.03, -13.97], [134.18, -14.32], [134.25, -14.35], [134.5, -14.25], [134.75, -14.35], [135.0, -14.25], [135.53, -14.47], [135.68, -14.82], [136.03, -14.97], [136.18, -15.32], [136.25, -15.35], [136.5, -15.25], [136.75, -15.35], [137.0, -15.25], [137.53, -15.47], [137.75, -16.0], [137.53, -16.53], [137.0, -16.75], [136.75, -16.65], [136.5, -16.75], [136.25, -16.65], [136.0, -16.75], [135.75, -16.65], [135.5, -16.75], [135.25, -16.65], [135.0, -16.75], [134.47, -16.53], [134.32, -16.18], [134.25, -16.15], [134.0, -16.25], [133.75, -16.15], [133.5, -16.25], [132.97, -16.03], [132.82, -15.68], [132.47, -15.53], [132.25, -15.0]]]]}, "2021-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[132.25, -15.0], [132.47, -14.47], [132.82, -14.32], [132.97, -13.97], [133.5, -13.75], [134.03, -13.97], [134.25, -14.5], [134.04, -15.0], [134.25, -15.5], [134.03, -16.03], [133.5, -16.25], [132.97, -16.03], [132.82, -15.68], [132.47, -15.53], [132.25, -15.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.189039026611283}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1887754859156523}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.08474705170096, 26.26237329258265, 26.47384045117184, 26.246380773280066, 26.206561342627708]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.97901015204519, 25.38776029206747, 26.00142943304303, 25.64741253113408, 25.912709384093375]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.514662485641466, -2.337319828679287, -2.096076040052529, -2.3000196853936643, -2.1219911097284316]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.602502690185247, -3.189039026611283, -2.5654963897824814, -2.6949209300261145, -2.3238409524593635]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3454430250660034, -1.4695426820034052, -1.3325907533994563, -1.3633099870860543, -1.2527182320192969]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4504338004013013, -1.7986276139390625, -1.4847939728783142, -1.5588078176964655, -1.3893520712259007]}}