{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:07:15.248325", "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": "2017-Feb-22_to_2017-Feb-26_182.5_-17.5"}, "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": 2017020000592}, "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 22 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 26 2017"}, "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": 106480.10790809286}, "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": ["Fiji"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["South Pacific Ocean"]}, "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": -17.5}, "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": 182.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "182.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 179.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 183.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-178.75, -17.5], [-178.53, -16.97], [-178.0, -16.75], [-177.75, -16.85], [-177.5, -16.75], [-176.97, -16.97], [-176.75, -17.5], [-176.97, -18.03], [-177.5, -18.25], [-177.75, -18.15], [-178.0, -18.25], [-178.53, -18.03], [-178.75, -17.5]]], [[[178.97, -17.03], [178.75, -16.5], [178.97, -15.97], [179.5, -15.75], [180.0, -15.96], [180.0, -17.04], [179.5, -17.25], [178.97, -17.03]]], [[[-179.97, -15.97], [-179.75, -16.5], [-179.97, -17.03], [-180.0, -17.04], [-180.0, -15.96], [-179.97, -15.97]]]]}, "2017-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-178.53, -16.97], [-178.0, -16.75], [-177.75, -16.85], [-177.5, -16.75], [-177.25, -16.85], [-177.0, -16.75], [-176.47, -16.97], [-176.32, -17.32], [-175.97, -17.47], [-175.75, -18.0], [-175.97, -18.53], [-176.5, -18.75], [-176.75, -18.65], [-177.0, -18.75], [-177.25, -18.65], [-177.5, -18.75], [-178.03, -18.53], [-178.18, -18.18], [-178.53, -18.03], [-178.75, -17.5], [-178.53, -16.97]]], [[[178.97, -17.03], [178.75, -16.5], [178.97, -15.97], [179.5, -15.75], [180.0, -15.96], [180.0, -17.04], [179.5, -17.25], [178.97, -17.03]]], [[[-179.97, -15.97], [-179.75, -16.5], [-179.97, -17.03], [-180.0, -17.04], [-180.0, -15.96], [-179.97, -15.97]]]]}, "2017-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.85, -16.75], [178.75, -16.5], [178.85, -16.25], [178.75, -16.0], [178.97, -15.47], [179.5, -15.25], [179.75, -15.35], [180.0, -15.25], [180.0, -18.75], [179.47, -18.53], [179.32, -18.18], [178.97, -18.03], [178.75, -17.5], [178.85, -17.25], [178.75, -17.0], [178.85, -16.75]]], [[[-179.75, -15.35], [-179.5, -15.25], [-179.25, -15.35], [-179.18, -15.32], [-179.03, -14.97], [-178.5, -14.75], [-177.97, -14.97], [-177.82, -15.32], [-177.47, -15.47], [-177.32, -15.82], [-177.25, -15.85], [-177.0, -15.75], [-176.75, -15.85], [-176.5, -15.75], [-175.97, -15.97], [-175.75, -16.5], [-175.85, -16.75], [-175.75, -17.0], [-175.96, -17.5], [-175.75, -18.0], [-175.97, -18.53], [-176.5, -18.75], [-176.75, -18.65], [-177.0, -18.75], [-177.25, -18.65], [-177.5, -18.75], [-178.03, -18.53], [-178.18, -18.18], [-178.25, -18.15], [-178.5, -18.25], [-179.0, -18.04], [-179.32, -18.18], [-179.47, -18.53], [-180.0, -18.75], [-180.0, -15.25], [-179.75, -15.35]]]]}, "2017-02-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.96, -16.5], [178.75, -16.0], [178.97, -15.47], [179.5, -15.25], [179.75, -15.35], [180.0, -15.25], [180.0, -18.75], [179.47, -18.53], [179.32, -18.18], [178.97, -18.03], [178.75, -17.5], [178.85, -17.25], [178.75, -17.0], [178.96, -16.5]]], [[[-179.75, -15.35], [-179.5, -15.25], [-179.25, -15.35], [-179.18, -15.32], [-179.03, -14.97], [-178.5, -14.75], [-177.97, -14.97], [-177.82, -15.32], [-177.47, -15.47], [-177.32, -15.82], [-177.25, -15.85], [-177.0, -15.75], [-176.75, -15.85], [-176.5, -15.75], [-175.97, -15.97], [-175.75, -16.5], [-175.85, -16.75], [-175.75, -17.0], [-175.96, -17.5], [-175.75, -18.0], [-175.97, -18.53], [-176.5, -18.75], [-176.75, -18.65], [-177.0, -18.75], [-177.25, -18.65], [-177.5, -18.75], [-178.03, -18.53], [-178.18, -18.18], [-178.25, -18.15], [-178.5, -18.25], [-179.0, -18.04], [-179.32, -18.18], [-179.47, -18.53], [-180.0, -18.75], [-180.0, -15.25], [-179.75, -15.35]]]]}, "2017-02-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.96, -16.5], [178.75, -16.0], [178.97, -15.47], [179.5, -15.25], [179.75, -15.35], [180.0, -15.25], [180.0, -18.75], [179.47, -18.53], [179.32, -18.18], [178.97, -18.03], [178.75, -17.5], [178.85, -17.25], [178.75, -17.0], [178.96, -16.5]]], [[[-179.75, -15.35], [-179.5, -15.25], [-179.25, -15.35], [-179.18, -15.32], [-179.03, -14.97], [-178.5, -14.75], [-177.97, -14.97], [-177.82, -15.32], [-177.47, -15.47], [-177.32, -15.82], [-177.25, -15.85], [-177.0, -15.75], [-176.75, -15.85], [-176.5, -15.75], [-175.97, -15.97], [-175.75, -16.5], [-175.85, -16.75], [-175.75, -17.0], [-175.96, -17.5], [-175.75, -18.0], [-175.97, -18.53], [-176.5, -18.75], [-176.75, -18.65], [-177.0, -18.75], [-177.25, -18.65], [-177.5, -18.75], [-178.03, -18.53], [-178.18, -18.18], [-178.25, -18.15], [-178.5, -18.25], [-179.0, -18.04], [-179.32, -18.18], [-179.47, -18.53], [-180.0, -18.75], [-180.0, -15.25], [-179.75, -15.35]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4708334552007614}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9854819200870444}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.75232273997898, 25.916507380273288, 26.06729538978044, 26.045069977699598, 26.06932888274997]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.695549616920573, 24.938687201173366, 24.919077119645863, 25.419545598907405, 25.480638545204272]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8319492005285459, -0.877980725343962, -0.9538047224060793, -1.0199621304734348, -1.0182441565118487]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.145103917551296, -1.0480082379608007, -1.4708334552007614, -1.3569659492221717, -1.3152088124446664]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4696520376056628, -1.5398025190614586, -1.6603254185166008, -1.820015428388615, -1.8135930159726519]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8318975407761409, -1.8112913537840885, -2.45263120705728, -2.410771607927684, -2.307854770511334]}}