{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:13:10.695918", "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": "2018-Jul-13_to_2018-Jul-15_148.0_-29.0"}, "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": 2018070000628}, "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": "July 13 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 15 2018"}, "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": 73067.460718096}, "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": ["C.Australia", "E.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": -29.0}, "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": 148.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "148.0\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": 149.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -30.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -27.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-07-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -28.0], [144.47, -27.47], [145.0, -27.25], [145.25, -27.35], [145.32, -27.32], [145.47, -26.97], [146.0, -26.75], [146.25, -26.85], [146.5, -26.75], [147.03, -26.97], [147.18, -27.32], [147.25, -27.35], [147.5, -27.25], [148.03, -27.47], [148.18, -27.82], [148.25, -27.85], [148.5, -27.75], [148.75, -27.85], [149.0, -27.75], [149.53, -27.97], [149.68, -28.32], [150.03, -28.47], [150.25, -29.0], [150.15, -29.25], [150.25, -29.5], [150.03, -30.03], [149.68, -30.18], [149.53, -30.53], [149.0, -30.75], [148.47, -30.53], [148.32, -30.18], [148.25, -30.15], [148.0, -30.25], [147.75, -30.15], [147.68, -30.18], [147.53, -30.53], [147.0, -30.75], [146.47, -30.53], [146.3, -30.12], [146.18, -30.18], [146.03, -30.53], [145.5, -30.75], [144.97, -30.53], [144.75, -30.0], [144.96, -29.5], [144.75, -29.0], [144.85, -28.75], [144.82, -28.68], [144.47, -28.53], [144.25, -28.0]], [[146.5, -28.96], [146.82, -28.82], [146.85, -28.75], [146.82, -28.68], [146.47, -28.53], [146.32, -28.18], [146.25, -28.15], [146.18, -28.18], [146.15, -28.25], [146.25, -28.5], [146.15, -28.75], [146.18, -28.82], [146.5, -28.96]]]]}, "2018-07-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -28.0], [144.47, -27.47], [145.0, -27.25], [145.25, -27.35], [145.32, -27.32], [145.47, -26.97], [146.0, -26.75], [146.25, -26.85], [146.5, -26.75], [147.03, -26.97], [147.18, -27.32], [147.25, -27.35], [147.5, -27.25], [148.03, -27.47], [148.18, -27.82], [148.25, -27.85], [148.5, -27.75], [148.75, -27.85], [149.0, -27.75], [149.53, -27.97], [149.68, -28.32], [150.03, -28.47], [150.25, -29.0], [150.15, -29.25], [150.25, -29.5], [150.03, -30.03], [149.68, -30.18], [149.53, -30.53], [149.0, -30.75], [148.47, -30.53], [148.32, -30.18], [148.25, -30.15], [148.0, -30.25], [147.75, -30.15], [147.68, -30.18], [147.53, -30.53], [147.0, -30.75], [146.47, -30.53], [146.3, -30.12], [146.18, -30.18], [146.03, -30.53], [145.5, -30.75], [144.97, -30.53], [144.75, -30.0], [144.96, -29.5], [144.75, -29.0], [144.85, -28.75], [144.82, -28.68], [144.47, -28.53], [144.25, -28.0]], [[146.5, -28.96], [146.82, -28.82], [146.85, -28.75], [146.82, -28.68], [146.47, -28.53], [146.32, -28.18], [146.25, -28.15], [146.18, -28.18], [146.15, -28.25], [146.25, -28.5], [146.15, -28.75], [146.18, -28.82], [146.5, -28.96]]]]}, "2018-07-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.25, -28.0], [144.47, -27.47], [145.0, -27.25], [145.25, -27.35], [145.32, -27.32], [145.47, -26.97], [146.0, -26.75], [146.25, -26.85], [146.5, -26.75], [147.03, -26.97], [147.18, -27.32], [147.25, -27.35], [147.5, -27.25], [148.03, -27.47], [148.18, -27.82], [148.25, -27.85], [148.5, -27.75], [148.75, -27.85], [149.0, -27.75], [149.53, -27.97], [149.68, -28.32], [150.03, -28.47], [150.25, -29.0], [150.15, -29.25], [150.25, -29.5], [150.03, -30.03], [149.68, -30.18], [149.53, -30.53], [149.0, -30.75], [148.47, -30.53], [148.32, -30.18], [148.25, -30.15], [148.0, -30.25], [147.75, -30.15], [147.68, -30.18], [147.53, -30.53], [147.0, -30.75], [146.47, -30.53], [146.3, -30.12], [146.18, -30.18], [146.03, -30.53], [145.5, -30.75], [144.97, -30.53], [144.75, -30.0], [144.96, -29.5], [144.75, -29.0], [144.85, -28.75], [144.82, -28.68], [144.47, -28.53], [144.25, -28.0]], [[146.5, -28.96], [146.82, -28.82], [146.85, -28.75], [146.82, -28.68], [146.47, -28.53], [146.32, -28.18], [146.25, -28.15], [146.18, -28.18], [146.15, -28.25], [146.25, -28.5], [146.15, -28.75], [146.18, -28.82], [146.5, -28.96]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.932873341730669}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.105736874432642}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.27475313015475, 6.527643984396661, 7.322906811781593]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [6.726445057206547, 5.3895287923383535, 6.634860636622989]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.8891217706385386, -4.631977659748475, -3.796111192910911]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.591940980953211, -5.932873341730669, -4.30408847150585]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.336780084920398, -1.614744120511493, -1.328914865893943]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4670245814311413, -1.865200870207607, -1.5697377600138358]}}