{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:51:59.038107", "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": "2012-Dec-09_to_2012-Dec-13_145.5_-8.0"}, "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": 2012120000420}, "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": "December 09 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 13 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 55060.75737323254}, "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": ["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": ["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": -8.0}, "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": 145.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "145.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 143.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 146.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -9.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -6.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.97, -7.97], [143.32, -7.82], [143.47, -7.47], [144.0, -7.25], [144.25, -7.35], [144.5, -7.25], [144.75, -7.35], [145.0, -7.25], [145.25, -7.35], [145.5, -7.25], [146.03, -7.47], [146.25, -8.0], [146.15, -8.25], [146.25, -8.5], [146.03, -9.03], [145.68, -9.18], [145.53, -9.53], [145.0, -9.75], [144.75, -9.65], [144.5, -9.75], [144.25, -9.65], [144.0, -9.75], [143.75, -9.65], [143.5, -9.75], [142.97, -9.53], [142.75, -9.0], [142.85, -8.75], [142.75, -8.5], [142.97, -7.97]]]]}, "2012-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.96, -8.0], [142.75, -7.5], [142.85, -7.25], [142.75, -7.0], [142.97, -6.47], [143.5, -6.25], [144.03, -6.47], [144.18, -6.82], [144.25, -6.85], [144.5, -6.75], [145.03, -6.97], [145.18, -7.32], [145.25, -7.35], [145.5, -7.25], [146.03, -7.47], [146.18, -7.82], [146.53, -7.97], [146.75, -8.5], [146.53, -9.03], [146.0, -9.25], [145.75, -9.15], [145.68, -9.18], [145.53, -9.53], [145.0, -9.75], [144.75, -9.65], [144.5, -9.75], [144.25, -9.65], [144.0, -9.75], [143.75, -9.65], [143.5, -9.75], [142.97, -9.53], [142.75, -9.0], [142.85, -8.75], [142.75, -8.5], [142.96, -8.0]]]]}, "2012-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.96, -8.0], [142.75, -7.5], [142.85, -7.25], [142.75, -7.0], [142.97, -6.47], [143.5, -6.25], [144.03, -6.47], [144.18, -6.82], [144.25, -6.85], [144.5, -6.75], [145.03, -6.97], [145.18, -7.32], [145.25, -7.35], [145.5, -7.25], [146.03, -7.47], [146.18, -7.82], [146.53, -7.97], [146.75, -8.5], [146.53, -9.03], [146.0, -9.25], [145.75, -9.15], [145.68, -9.18], [145.53, -9.53], [145.0, -9.75], [144.75, -9.65], [144.5, -9.75], [144.25, -9.65], [144.0, -9.75], [143.75, -9.65], [143.5, -9.75], [142.97, -9.53], [142.75, -9.0], [142.85, -8.75], [142.75, -8.5], [142.96, -8.0]]]]}, "2012-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.96, -8.0], [142.75, -7.5], [142.85, -7.25], [142.75, -7.0], [142.97, -6.47], [143.5, -6.25], [144.03, -6.47], [144.18, -6.82], [144.25, -6.85], [144.5, -6.75], [145.03, -6.97], [145.18, -7.32], [145.25, -7.35], [145.5, -7.25], [146.03, -7.47], [146.18, -7.82], [146.53, -7.97], [146.75, -8.5], [146.53, -9.03], [146.0, -9.25], [145.75, -9.15], [145.5, -9.25], [145.25, -9.15], [145.0, -9.25], [144.75, -9.15], [144.68, -9.18], [144.53, -9.53], [144.0, -9.75], [143.75, -9.65], [143.5, -9.75], [142.97, -9.53], [142.75, -9.0], [142.85, -8.75], [142.75, -8.5], [142.96, -8.0]]]]}, "2012-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[145.5, -7.25], [146.03, -7.47], [146.25, -8.0], [146.03, -8.53], [145.5, -8.75], [144.97, -8.53], [144.75, -8.0], [144.97, -7.47], [145.5, -7.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.5949187240212837}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.032441506767694}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.45433156607845, 25.890115917968046, 25.93073662893613, 26.207800672172823, 26.432633513179496]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.254782558536647, 23.97820651304818, 24.352489865356517, 24.329367844151818, 26.432633513179496]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7929192995397286, -1.190539489352119, -1.1836784612767355, -0.9018243768374568, -0.668075411932648]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.8847845970941535, -1.5949187240212837, -1.348890823481156, -1.169096713033582, -0.668075411932648]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4391095600474935, -1.9823328603639057, -1.960595871496056, -1.4445647361657303, -1.2048108717314343]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.597948111252668, -2.42868958197796, -2.462340439868186, -1.6823171290518217, -1.2048108717314343]}}