{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:28:09.462313", "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": "2021-Nov-15_to_2021-Nov-18_187.0_-13.5"}, "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": 2021110000482}, "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": "November 15 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 18 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 86921.30069095003}, "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": ["Samoa"]}, "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": -13.5}, "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": 187.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "187.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 185.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 191.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-11-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-175.03, -15.03], [-175.25, -14.5], [-175.03, -13.97], [-174.5, -13.75], [-174.25, -13.85], [-174.0, -13.75], [-173.75, -13.85], [-173.5, -13.75], [-173.25, -13.85], [-173.18, -13.82], [-173.03, -13.47], [-172.5, -13.25], [-171.97, -13.47], [-171.82, -13.82], [-171.75, -13.85], [-171.68, -13.82], [-171.53, -13.47], [-171.0, -13.25], [-170.75, -13.35], [-170.5, -13.25], [-170.25, -13.35], [-170.0, -13.25], [-169.47, -13.47], [-169.32, -13.82], [-168.97, -13.97], [-168.75, -14.5], [-168.85, -14.75], [-168.82, -14.82], [-168.47, -14.97], [-168.25, -15.5], [-168.47, -16.03], [-169.0, -16.25], [-169.53, -16.03], [-169.68, -15.68], [-169.75, -15.65], [-170.0, -15.75], [-170.53, -15.53], [-170.68, -15.18], [-170.75, -15.15], [-171.0, -15.25], [-171.25, -15.15], [-171.5, -15.25], [-171.75, -15.15], [-172.0, -15.25], [-172.25, -15.15], [-172.5, -15.25], [-172.75, -15.15], [-173.0, -15.25], [-173.25, -15.15], [-173.5, -15.25], [-173.75, -15.15], [-174.0, -15.25], [-174.25, -15.15], [-174.5, -15.25], [-175.03, -15.03]]]]}, 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-15.25], [-173.25, -15.15], [-173.5, -15.25], [-173.75, -15.15], [-174.0, -15.25], [-174.25, -15.15], [-174.5, -15.25], [-175.03, -15.03], [-175.25, -14.5], [-175.15, -14.25], [-175.25, -14.0], [-175.03, -13.47]]]]}, "2021-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-175.03, -13.47], [-174.68, -13.32], [-174.65, -13.25], [-174.75, -13.0], [-174.53, -12.47], [-174.0, -12.25], [-173.75, -12.35], [-173.5, -12.25], [-173.25, -12.35], [-173.0, -12.25], [-172.47, -12.47], [-172.32, -12.82], [-171.97, -12.97], [-171.75, -13.5], [-171.85, -13.75], [-171.82, -13.82], [-171.75, -13.85], [-171.68, -13.82], [-171.53, -13.47], [-171.0, -13.25], [-170.75, -13.35], [-170.5, -13.25], [-170.25, -13.35], [-170.0, -13.25], [-169.47, -13.47], [-169.32, -13.82], [-168.97, -13.97], [-168.75, -14.5], [-168.85, -14.75], [-168.82, -14.82], [-168.47, -14.97], [-168.25, -15.5], [-168.47, -16.03], [-169.0, -16.25], [-169.53, -16.03], [-169.68, -15.68], [-169.75, -15.65], [-170.0, 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[-175.03, -15.03], [-175.25, -14.5], [-175.15, -14.25], [-175.25, -14.0], [-175.03, -13.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.6726258930019071}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0852439422417006}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.53897097253298, 25.63903368130093, 25.72608431642783, 25.89758780589176]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.927576726528685, 23.998493183939217, 23.647297664533596, 24.03341870520609]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2031702924885919, -1.1237907813056938, -1.0549626321699963, -0.9277522992270064]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6726258930019071, -1.6538264327094225, -1.3083028704584194, -1.1141353620470227]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.1710273800670543, -2.017685627425098, -1.8958459395157656, -1.6531792788020436]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.9177721633691247, -2.888504206190186, -2.5089855805522627, -2.030621339811582]}}