{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:35.744108", "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": "2013-Feb-05_to_2013-Feb-16_148.0_-6.5"}, "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": 2013020000254}, "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": "February 05 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 16 2013"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 12}, "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": 52201.155446154095}, "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", "Solomon 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": -6.5}, "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": 148.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "148.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 146.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 150.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-02-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.97, -6.53], [146.75, -6.0], [146.97, -5.47], [147.5, -5.25], [147.75, -5.35], [148.0, -5.25], [148.25, -5.35], [148.5, -5.25], [149.03, -5.47], [149.25, -6.0], [149.15, -6.25], [149.25, -6.5], [149.03, -7.03], [148.5, -7.25], [147.97, -7.03], [147.82, -6.68], [147.75, -6.65], [147.5, -6.75], [146.97, -6.53]]]]}, "2013-02-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -7.5], [146.47, -6.97], [147.0, -6.75], [147.3, -6.87], [147.35, -6.75], [147.32, -6.68], [146.97, -6.53], [146.75, -6.0], [146.85, -5.75], [146.75, -5.5], [146.97, -4.97], [147.5, -4.75], [147.75, -4.85], [148.0, -4.75], [148.53, -4.97], [148.68, -5.32], [149.03, -5.47], [149.25, -6.0], [149.15, -6.25], [149.25, -6.5], [149.03, -7.03], [148.68, -7.18], [148.53, -7.53], [148.13, -7.7], [148.25, -8.0], [148.03, -8.53], [147.5, -8.75], [146.97, -8.53], [146.82, -8.18], [146.47, -8.03], [146.25, -7.5]]]]}, "2013-02-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.47, -6.47], [146.88, -6.3], [146.75, -6.0], [146.85, -5.75], [146.75, -5.5], [146.97, -4.97], [147.5, -4.75], [147.75, -4.85], [148.0, -4.75], [148.53, -4.97], [148.68, -5.32], [149.03, -5.47], [149.25, -6.0], [149.15, -6.25], [149.25, -6.5], [149.03, -7.03], [148.68, -7.18], [148.53, -7.53], [148.13, -7.7], [148.25, -8.0], [148.03, -8.53], [147.5, -8.75], [146.97, -8.53], [146.82, -8.18], [146.47, -8.03], [146.25, -7.5], [146.35, -7.25], [146.25, -7.0], [146.47, -6.47]]]]}, "2013-02-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.47, -6.47], [147.0, -6.25], [147.25, -6.35], [147.32, -6.32], [147.35, -6.25], [147.32, -6.18], [146.97, -6.03], [146.75, -5.5], [146.97, -4.97], [147.5, -4.75], [147.75, -4.85], [148.0, -4.75], [148.53, -4.97], [148.68, -5.32], [149.03, -5.47], [149.25, -6.0], [149.15, -6.25], [149.25, -6.5], [149.15, -6.75], [149.25, -7.0], [149.03, -7.53], [148.5, -7.75], [148.25, -7.65], [148.13, -7.7], [148.25, -8.0], [148.03, -8.53], [147.5, -8.75], [146.97, -8.53], [146.82, -8.18], [146.47, -8.03], [146.25, -7.5], [146.35, -7.25], [146.25, -7.0], [146.47, -6.47]]]]}, "2013-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.47, -7.53], [146.25, -7.0], [146.47, -6.47], [147.0, -6.25], [147.25, -6.35], [147.32, -6.32], [147.35, -6.25], [147.25, -6.0], [147.47, -5.47], [148.0, -5.25], [148.25, -5.35], [148.5, -5.25], [149.03, -5.47], [149.25, -6.0], [149.15, -6.25], [149.25, -6.5], [149.15, -6.75], [149.25, -7.0], [149.03, -7.53], [148.5, -7.75], [148.25, -7.65], [148.0, -7.75], [147.75, -7.65], [147.5, -7.75], [147.25, -7.65], [147.0, -7.75], [146.47, -7.53]]]]}, "2013-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.47, -7.53], [146.25, -7.0], [146.47, -6.47], [147.0, -6.25], [147.25, -6.35], [147.32, -6.32], [147.47, -5.97], [147.82, -5.82], [147.97, -5.47], [148.5, -5.25], [149.03, -5.47], [149.25, -6.0], [149.15, -6.25], [149.25, -6.5], [149.15, -6.75], [149.25, -7.0], [149.03, -7.53], [148.5, -7.75], [148.25, -7.65], [148.0, -7.75], [147.75, -7.65], [147.5, -7.75], [147.25, -7.65], [147.0, -7.75], [146.47, -7.53]]]]}, "2013-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.47, -5.47], [148.0, -5.25], [148.53, -5.47], [148.68, -5.82], [148.75, -5.85], [149.0, -5.75], [149.53, -5.97], [149.75, -6.5], [149.53, -7.03], [149.0, -7.25], [148.75, -7.15], [148.5, -7.25], [148.25, -7.15], [148.0, -7.25], [147.47, -7.03], [147.25, -6.5], [147.35, -6.25], [147.25, -6.0], [147.47, -5.47]]]]}, "2013-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.47, -5.47], [148.0, -5.25], [148.53, -5.47], [148.7, -5.87], [149.0, -5.75], [149.53, -5.97], [149.75, -6.5], [149.53, -7.03], [149.0, -7.25], [148.5, -7.04], [148.0, -7.25], [147.47, -7.03], [147.25, -6.5], [147.35, -6.25], [147.25, -6.0], [147.47, -5.47]]]]}, "2013-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[147.35, -6.25], [147.25, -6.0], [147.47, -5.47], [148.0, -5.25], [148.25, -5.35], [148.5, -5.25], [149.03, -5.47], [149.18, -5.82], [149.5, -5.96], [150.0, -5.75], [150.53, -5.97], [150.75, -6.5], [150.53, -7.03], [150.0, -7.25], [149.5, -7.04], [149.0, -7.25], [148.75, -7.15], [148.68, -7.18], [148.53, -7.53], [148.0, -7.75], [147.47, -7.53], [147.25, -7.0], [147.35, -6.75], [147.25, -6.5], [147.35, -6.25]]]]}, "2013-02-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.75, -6.5], [146.97, -5.97], [147.5, -5.75], [147.75, -5.85], [147.82, -5.82], [147.97, -5.47], [148.5, -5.25], [149.03, -5.47], [149.2, -5.87], [149.5, -5.75], [149.75, -5.85], [150.0, -5.75], [150.53, -5.97], [150.75, -6.5], [150.53, -7.03], [150.0, -7.25], [149.75, -7.15], [149.5, -7.25], [149.0, -7.04], [148.68, -7.18], [148.53, -7.53], [148.0, -7.75], [147.47, -7.53], [147.32, -7.18], [146.97, -7.03], [146.75, -6.5]]]]}, "2013-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.75, -6.5], [146.97, -5.97], [147.5, -5.75], [147.75, -5.85], [147.82, -5.82], [147.97, -5.47], [148.5, -5.25], [149.03, -5.47], [149.2, -5.87], [149.5, -5.75], [149.75, -5.85], [150.0, -5.75], [150.53, -5.97], [150.75, -6.5], [150.53, -7.03], [150.0, -7.25], [149.75, -7.15], [149.5, -7.25], [149.0, -7.04], [148.68, -7.18], [148.53, -7.53], [148.0, -7.75], [147.47, -7.53], [147.32, -7.18], [146.97, -7.03], [146.75, -6.5]]]]}, "2013-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[148.5, -5.25], [149.03, -5.47], [149.2, -5.87], [149.5, -5.75], [149.75, -5.85], [150.0, -5.75], [150.53, -5.97], [150.75, -6.5], [150.53, -7.03], [150.0, -7.25], [149.75, -7.15], [149.5, -7.25], [148.97, -7.03], [148.8, -6.63], [148.5, -6.75], [148.2, -6.63], [148.03, -7.03], [147.5, -7.25], [146.97, -7.03], [146.75, -6.5], [146.97, -5.97], [147.5, -5.75], [147.8, -5.87], [147.97, -5.47], [148.5, -5.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.5093270823517173}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9649539730056049}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.770284244715697, 25.008050543861827, 24.998237409130127, 25.21350500531082, 26.128486054056623, 26.011816430904616, 26.557859680270212, 26.701283710480652, 26.648481032617497, 26.006970240987414, 25.958172467266934, 25.502609023117202]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.498227272477777, 20.152245018178462, 20.18408592539663, 20.190333192002697, 23.449525462914153, 23.0141648728698, 26.44787755929343, 26.595326486179374, 26.394540680957505, 21.98081323629293, 21.428232428746924, 21.867690688285677]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8740618752835303, -1.0063700910657303, -1.011336132128709, -1.0549349986532566, -0.9904351562590961, -1.090473427706107, -0.9182005055030942, -0.7549538210628081, -0.8655464339591877, -0.8802777109657102, -0.9262345805533414, -0.8667539791843524]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0152962799872967, -1.313166791926676, -1.3556101883868905, -1.5093270823517173, -1.403738407883452, -1.3610993663444901, -1.1686450119737515, -0.8875230192116419, -1.1732511899133442, -1.0641985903239402, -1.3033696389834404, -0.9477831507809924]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.83226877571942, -1.8126801497568885, -1.7587312844727252, -1.779356288190219, -1.6378627587713872, -1.7263447895832482, -1.671138608251555, -1.4060050761125111, -1.5807756104535973, -1.552505694837446, -1.6176204992485883, -1.5468629295146297]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.276904424382223, -2.308737445264147, -2.417382440710099, -2.599317056062599, -2.2434968746662673, -1.9499855364254768, -1.9219646406170425, -1.4844106210884354, -1.985573731151826, -1.839500036543774, -1.9978253498832959, -1.641660448382843]}}