{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:57:17.974108", "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": "2014-Sep-18_to_2014-Sep-20_146.5_-4.0"}, "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": 2014090000678}, "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": "September 18 2014"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 20 2014"}, "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": 55519.62977941429}, "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": ["Equatorial.Pacific-Ocean", "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": ["Bismarck 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": -4.0}, "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": 146.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 144.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2014-09-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -2.47], [144.5, -2.25], [144.75, -2.35], [145.0, -2.25], [145.53, -2.47], [145.68, -2.82], [145.75, -2.85], [146.0, -2.75], [146.25, -2.85], [146.32, -2.82], [146.47, -2.47], [147.0, -2.25], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.25, -3.0], [148.03, -3.53], [147.68, -3.68], [147.65, -3.75], [147.75, -4.0], [147.53, -4.53], [147.18, -4.68], [147.03, -5.03], [146.5, -5.25], [146.25, -5.15], [146.0, -5.25], [145.75, -5.15], [145.5, -5.25], [145.25, -5.15], [145.0, -5.25], [144.47, -5.03], [144.25, -4.5], [144.35, -4.25], [144.32, -4.18], [143.97, -4.03], [143.75, -3.5], [143.85, -3.25], [143.75, -3.0], [143.97, -2.47]]]]}, "2014-09-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -2.47], [144.5, -2.25], [144.75, -2.35], [145.0, -2.25], [145.53, -2.47], [145.68, -2.82], [145.75, -2.85], [146.0, -2.75], [146.25, -2.85], [146.32, -2.82], [146.47, -2.47], [147.0, -2.25], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.25, -3.0], [148.03, -3.53], [147.68, -3.68], [147.65, -3.75], [147.75, -4.0], [147.53, -4.53], [147.18, -4.68], [147.03, -5.03], [146.5, -5.25], [146.25, -5.15], [146.0, -5.25], [145.75, -5.15], [145.5, -5.25], [145.25, -5.15], [145.0, -5.25], [144.47, -5.03], [144.25, -4.5], [144.35, -4.25], [144.32, -4.18], [143.97, -4.03], [143.75, -3.5], [143.85, -3.25], [143.75, -3.0], [143.97, -2.47]]]]}, "2014-09-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[143.97, -2.47], [144.5, -2.25], [144.75, -2.35], [145.0, -2.25], [145.53, -2.47], [145.68, -2.82], [145.75, -2.85], [146.0, -2.75], [146.25, -2.85], [146.32, -2.82], [146.47, -2.47], [147.0, -2.25], [147.25, -2.35], [147.5, -2.25], [148.03, -2.47], [148.25, -3.0], [148.03, -3.53], [147.68, -3.68], [147.65, -3.75], [147.75, -4.0], [147.53, -4.53], [147.18, -4.68], [147.03, -5.03], [146.5, -5.25], [146.25, -5.15], [146.0, -5.25], [145.75, -5.15], [145.5, -5.25], [145.25, -5.15], [145.0, -5.25], [144.47, -5.03], [144.25, -4.5], [144.35, -4.25], [144.32, -4.18], [143.97, -4.03], [143.75, -3.5], [143.85, -3.25], [143.75, -3.0], [143.97, -2.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.3724633616166102}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0224999145875657}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.835868085071525, 25.707946206774523, 25.83470630690738]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.682676976869914, 24.355055534566077, 24.676236684872777]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9933855276984281, -1.0997007079921874, -0.9744135080720816]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.18201216984437, -1.3724633616166102, -1.3530851065681873]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7134786647551767, -1.9012096150539268, -1.675844087587379]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0649597387008725, -2.4240656218366317, -2.335184951377234]}}