{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:14.684226", "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-Oct-04_to_2018-Oct-09_140.0_-9.0"}, "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": 2018100000214}, "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": "October 04 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 09 2018"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 79150.85968135386}, "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": ["Papua New Guinea"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia", "S.E.Asia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": -9.0}, "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": 140.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "140.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 139.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -11.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -8.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-10-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.85, -9.25], [139.75, -9.0], [139.97, -8.47], [140.5, -8.25], [141.0, -8.46], [141.5, -8.25], [142.03, -8.47], [142.18, -8.82], [142.25, -8.85], [142.32, -8.82], [142.47, -8.47], [143.0, -8.25], [143.53, -8.47], [143.68, -8.82], [144.03, -8.97], [144.25, -9.5], [144.15, -9.75], [144.25, -10.0], [144.03, -10.53], [143.63, -10.7], [143.75, -11.0], [143.53, -11.53], [143.0, -11.75], [142.5, -11.54], [142.18, -11.68], [142.03, -12.03], [141.5, -12.25], [140.97, -12.03], [140.75, -11.5], [140.85, -11.25], [140.82, -11.18], [140.47, -11.03], [140.32, -10.68], [139.97, -10.53], [139.75, -10.0], [139.85, -9.75], [139.75, -9.5], [139.85, -9.25]]]]}, "2018-10-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, -9.0], [139.47, -8.47], [140.0, -8.25], [140.25, -8.35], [140.5, -8.25], [141.0, -8.46], [141.5, -8.25], [142.03, -8.47], [142.18, -8.82], [142.25, -8.85], [142.32, -8.82], [142.47, -8.47], [143.0, -8.25], [143.53, -8.47], [143.68, -8.82], [144.03, -8.97], [144.25, -9.5], [144.15, -9.75], [144.25, -10.0], [144.03, -10.53], [143.63, -10.7], [143.75, -11.0], [143.53, -11.53], [143.0, -11.75], [142.5, -11.54], [142.18, -11.68], [142.03, -12.03], [141.5, -12.25], [140.97, -12.03], [140.75, -11.5], [140.85, -11.25], [140.82, -11.18], [140.47, -11.03], [140.32, -10.68], [139.97, -10.53], [139.75, -10.0], [139.85, -9.75], [139.82, -9.68], [139.47, -9.53], [139.25, -9.0]]]]}, "2018-10-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[139.25, -9.0], [139.47, -8.47], [140.0, -8.25], [140.25, -8.35], [140.5, -8.25], [141.0, -8.46], [141.5, -8.25], [142.03, -8.47], [142.18, -8.82], [142.25, -8.85], [142.32, -8.82], [142.47, -8.47], [143.0, -8.25], [143.53, -8.47], [143.68, -8.82], [144.03, -8.97], [144.25, -9.5], [144.15, -9.75], [144.25, -10.0], [144.03, -10.53], [143.63, -10.7], [143.75, -11.0], [143.53, -11.53], [143.0, -11.75], [142.5, -11.54], [142.18, -11.68], [142.03, -12.03], [141.5, -12.25], [140.97, -12.03], [140.75, -11.5], [140.85, -11.25], [140.82, -11.18], [140.47, -11.03], [140.32, -10.68], [139.97, -10.53], [139.75, -10.0], [139.85, -9.75], [139.82, -9.68], [139.47, -9.53], [139.25, -9.0]]]]}, "2018-10-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.0, -8.25], [140.53, -8.47], [140.75, -9.0], [140.53, -9.53], [140.0, -9.75], [139.47, -9.53], [139.25, -9.0], [139.47, -8.47], [140.0, -8.25]]]]}, "2018-10-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.0, -8.25], [140.53, -8.47], [140.75, -9.0], [140.53, -9.53], [140.0, -9.75], [139.47, -9.53], [139.25, -9.0], [139.47, -8.47], [140.0, -8.25]]]]}, "2018-10-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[140.0, -8.25], [140.53, -8.47], [140.75, -9.0], [140.53, -9.53], [140.0, -9.75], [139.47, -9.53], [139.25, -9.0], [139.47, -8.47], [140.0, -8.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.7296378385893263}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.1145372965770606}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.82111061589086, 24.504816257871767, 24.810167627852366, 25.22528319113843, 25.12698276860067, 25.176903819627967]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.265844638377757, 23.902815818774116, 24.511412161446458, 25.22528319113843, 25.12698276860067, 25.176903819627967]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9913167792615991, -1.3328058561502105, -1.0374161885339959, -0.8365419108448009, -0.9670726420787901, -0.9506765299119024]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.1544247661228155, -1.7296378385893263, -1.4617831209544079, -0.8365419108448009, -0.9670726420787901, -0.9506765299119024]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4325231842879236, -1.9348991775261315, -1.5054615620703764, -1.3475288845375943, -1.5868641965667778, -1.5758916557158413]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5828934951794813, -2.2114349064867884, -1.8626106709238792, -1.3475288845375943, -1.5868641965667778, -1.5758916557158413]}}