{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:03.639559", "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-05_to_2015-Jan-12_142.5_-11.0"}, "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": 2015010000344}, "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 05 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 12 2015"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 51401.36661477102}, "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", "Coral 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": -11.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.75}, "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": -13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.0, -10.25], [144.53, -10.47], [144.75, -11.0], [144.53, -11.53], [144.18, -11.68], [144.03, -12.03], [143.5, -12.25], [142.97, -12.03], [142.75, -11.5], [142.97, -10.97], [143.32, -10.82], [143.47, -10.47], [144.0, -10.25]]]]}, "2015-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -12.03], [141.25, -11.5], [141.47, -10.97], [142.0, -10.75], [142.53, -10.97], [142.75, -11.5], [142.53, -12.03], [142.0, -12.25], [141.47, -12.03]]], [[[143.47, -10.47], [144.0, -10.25], [144.53, -10.47], [144.68, -10.82], [145.03, -10.97], [145.25, -11.5], [145.03, -12.03], [144.5, -12.25], [144.0, -12.04], [143.5, -12.25], [142.97, -12.03], [142.75, -11.5], [142.97, -10.97], [143.32, -10.82], [143.47, -10.47]]]]}, "2015-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -11.75], [141.25, -11.5], [141.47, -10.97], [141.82, -10.82], [141.97, -10.47], [142.5, -10.25], [142.75, -10.35], [143.0, -10.25], [143.5, -10.46], [144.0, -10.25], [144.53, -10.47], [144.68, -10.82], [145.03, -10.97], [145.25, -11.5], [145.03, -12.03], [144.5, -12.25], [144.0, -12.04], [143.5, -12.25], [143.25, -12.15], [143.18, -12.18], [143.03, -12.53], [142.68, -12.68], [142.53, -13.03], [142.0, -13.25], [141.47, -13.03], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.35, -11.75]]]]}, "2015-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.25, -11.5], [141.47, -10.97], [141.82, -10.82], [141.97, -10.47], [142.5, -10.25], [142.75, -10.35], [143.0, -10.25], [143.53, -10.47], [143.75, -11.0], [143.65, -11.25], [143.75, -11.5], [143.65, -11.75], [143.75, -12.0], [143.65, -12.25], [143.68, -12.32], [144.03, -12.47], [144.25, -13.0], [144.15, -13.25], [144.25, -13.5], [144.03, -14.03], [143.5, -14.25], [142.97, -14.03], [142.82, -13.68], [142.47, -13.53], [142.32, -13.18], [142.25, -13.15], [142.0, -13.25], [141.47, -13.03], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.35, -11.75], [141.25, -11.5]]], [[[145.03, -10.97], [145.25, -11.5], [145.03, -12.03], [144.5, -12.25], [143.97, -12.03], [143.75, -11.5], [143.97, -10.97], [144.5, -10.75], [145.03, -10.97]]]]}, "2015-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -11.47], [141.82, -11.32], [141.85, -11.25], [141.75, -11.0], [141.97, -10.47], [142.5, -10.25], [142.75, -10.35], [143.0, -10.25], [143.53, -10.47], [143.75, -11.0], [143.65, -11.25], [143.75, -11.5], [143.65, -11.75], [143.75, -12.0], [143.65, -12.25], [143.68, -12.32], [144.03, -12.47], [144.25, -13.0], [144.15, -13.25], [144.25, -13.5], [144.03, -14.03], [143.5, -14.25], [142.97, -14.03], [142.82, -13.68], [142.47, -13.53], [142.32, -13.18], [142.25, -13.15], [142.0, -13.25], [141.47, -13.03], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.47, -11.47]]]]}, "2015-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -11.47], [141.82, -11.32], [141.85, -11.25], [141.75, -11.0], [141.97, -10.47], [142.5, -10.25], [143.03, -10.47], [143.18, -10.82], [143.53, -10.97], [143.75, 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amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1902225055135887}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6174687510454495}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.53209736834185, 26.569503603380383, 26.042678976215086, 25.779101888692594, 24.851336785150295, 25.298219092734428, 25.95410201559173, 25.809897780965514]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.451493833974553, 26.39163039032161, 24.491555261463816, 24.54522361308517, 23.51865646067921, 24.027462062750658, 25.818247687616747, 25.809897780965514]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8744868287897987, -0.8395342306031495, -1.2664394555210328, -1.4347511500701708, -2.3349722403837325, -1.855935227975048, -1.290609998365312, -1.2818313635311256]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9151349522738315, -1.0648228924079035, -2.232584150006005, -2.1708972807741134, -3.1902225055135887, -2.617110370150442, -1.2947810461202494, -1.2818313635311256]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5239055863063056, -1.388467012061809, -1.5072173358127718, -1.519569293764846, -2.3155590572505393, -1.821768982125261, -1.4611351912927666, -1.585034048343221]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.626070962980332, -1.4692565948604486, -1.937529823388, -2.0803304239760445, -2.7959145006966986, -2.1570698660914895, -1.6229233546057307, -1.585034048343221]}}