{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:07.828140", "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-Jan-25_to_2015-Jan-27_144.0_-37.5"}, "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": 2015010001183}, "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 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 27 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": 54275.08226190398}, "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": ["S.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": -37.5}, "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": 144.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "144.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 140.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 144.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -35.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -36.25], [140.25, -36.0], [140.47, -35.47], [141.0, -35.25], [141.25, -35.35], [141.5, -35.25], [142.03, -35.47], [142.18, -35.82], [142.25, -35.85], [142.5, -35.75], [142.75, -35.85], [143.0, -35.75], [143.53, -35.97], [143.68, -36.32], [144.03, -36.47], [144.18, -36.82], [144.25, -36.85], [144.5, -36.75], [145.03, -36.97], [145.25, -37.5], [145.03, -38.03], [144.68, -38.18], [144.53, -38.53], [144.0, -38.75], [143.75, -38.65], [143.5, -38.75], [142.97, -38.53], [142.82, -38.18], [142.75, -38.15], [142.5, -38.25], [142.25, -38.15], [142.0, -38.25], [141.75, -38.15], [141.5, -38.25], [140.97, -38.03], [140.82, -37.68], [140.47, -37.53], [140.25, -37.0], [140.35, -36.75], [140.25, -36.5], [140.35, -36.25]]]]}, "2015-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -36.25], [140.25, -36.0], [140.47, -35.47], [141.0, -35.25], [141.25, -35.35], [141.5, -35.25], [142.03, -35.47], [142.18, -35.82], [142.25, -35.85], [142.5, -35.75], [142.75, -35.85], [143.0, -35.75], [143.53, -35.97], [143.68, -36.32], [144.03, -36.47], [144.18, -36.82], [144.25, -36.85], [144.5, -36.75], [145.03, -36.97], [145.25, -37.5], [145.03, -38.03], [144.68, -38.18], [144.53, -38.53], [144.0, -38.75], [143.75, -38.65], [143.5, -38.75], [142.97, -38.53], [142.82, -38.18], [142.75, -38.15], [142.5, -38.25], [142.25, -38.15], [142.0, -38.25], [141.75, -38.15], [141.5, -38.25], [140.97, -38.03], [140.82, -37.68], [140.47, -37.53], [140.25, -37.0], [140.35, -36.75], [140.25, -36.5], [140.35, -36.25]]]]}, "2015-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.35, -36.25], [140.25, -36.0], [140.47, -35.47], [141.0, -35.25], [141.25, -35.35], [141.5, -35.25], [142.03, -35.47], [142.18, -35.82], [142.25, -35.85], [142.5, -35.75], [142.75, -35.85], [143.0, -35.75], [143.53, -35.97], [143.68, -36.32], [144.03, -36.47], [144.18, -36.82], [144.25, -36.85], [144.5, -36.75], [145.03, -36.97], [145.25, -37.5], [145.03, -38.03], [144.68, -38.18], [144.53, -38.53], [144.0, -38.75], [143.75, -38.65], [143.5, -38.75], [142.97, -38.53], [142.82, -38.18], [142.75, -38.15], [142.5, -38.25], [142.25, -38.15], [142.0, -38.25], [141.75, -38.15], [141.5, -38.25], [140.97, -38.03], [140.82, -37.68], [140.47, -37.53], [140.25, -37.0], [140.35, -36.75], [140.25, -36.5], [140.35, -36.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.106421931531031}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.870256047582594}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.506634776865099, 14.045626148509314, 15.331958651970467]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.91581912975164, 11.471693963671612, 12.524320905384343]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.65108601490165, -6.121507869660204, -4.838174258185929]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.106421931531031, -6.3923020668443655, -5.320902615703687]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5439056268402092, -1.3969818477206086, -1.0727649657208909]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6624098648530945, -1.467934055621796, -1.184341779162212]}}