{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:08.696445", "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": "2015-Jan-31_to_2015-Feb-02_298.0_-1.5"}, "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": 2015010001433}, "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": "January 31 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 2015"}, "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": 92657.49687152836}, "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": ["Brazil"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["South America"]}, "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": []}, "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": -1.5}, "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": 298.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -4.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.15, -0.75], [-64.25, -0.5], [-64.03, 0.03], [-63.5, 0.25], [-63.25, 0.15], [-63.0, 0.25], [-62.5, 0.04], [-62.0, 0.25], [-61.47, 0.03], [-61.32, -0.32], [-60.97, -0.47], [-60.75, -1.0], [-60.85, -1.25], [-60.75, -1.5], [-60.85, -1.75], [-60.82, -1.82], [-60.47, -1.97], [-60.25, -2.5], [-60.47, -3.03], [-60.82, -3.18], [-60.85, -3.25], [-60.75, -3.5], [-60.97, -4.03], [-61.32, -4.18], [-61.47, -4.53], [-62.0, -4.75], [-62.53, -4.53], [-62.68, -4.18], [-62.75, -4.15], [-63.0, -4.25], [-63.53, -4.03], [-63.75, -3.5], [-63.65, -3.25], [-63.75, -3.0], [-63.54, -2.5], [-63.68, -2.18], [-64.03, -2.03], [-64.25, -1.5], [-64.15, -1.25], [-64.25, -1.0], [-64.15, -0.75]]]]}, "2015-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.15, -0.75], [-64.25, -0.5], [-64.03, 0.03], [-63.5, 0.25], [-63.25, 0.15], [-63.0, 0.25], [-62.5, 0.04], [-62.0, 0.25], [-61.47, 0.03], [-61.32, -0.32], [-60.97, -0.47], [-60.75, -1.0], [-60.85, -1.25], [-60.75, -1.5], [-60.85, -1.75], [-60.82, -1.82], [-60.47, -1.97], [-60.25, -2.5], [-60.47, -3.03], [-60.82, -3.18], [-60.85, -3.25], [-60.75, -3.5], [-60.97, -4.03], [-61.32, -4.18], [-61.47, -4.53], [-62.0, -4.75], [-62.53, -4.53], [-62.68, -4.18], [-62.75, -4.15], [-63.0, -4.25], [-63.53, -4.03], [-63.75, -3.5], [-63.65, -3.25], [-63.75, -3.0], [-63.54, -2.5], [-63.68, -2.18], [-64.03, -2.03], [-64.25, -1.5], [-64.15, -1.25], [-64.25, -1.0], [-64.15, -0.75]]]]}, "2015-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.15, -0.75], [-64.25, -0.5], [-64.03, 0.03], [-63.5, 0.25], [-63.25, 0.15], [-63.0, 0.25], [-62.5, 0.04], [-62.0, 0.25], [-61.47, 0.03], [-61.32, -0.32], [-60.97, -0.47], [-60.75, -1.0], [-60.85, -1.25], [-60.75, -1.5], [-60.85, -1.75], [-60.82, -1.82], [-60.47, -1.97], [-60.25, -2.5], [-60.47, -3.03], [-60.82, -3.18], [-60.85, -3.25], [-60.75, -3.5], [-60.97, -4.03], [-61.32, -4.18], [-61.47, -4.53], [-62.0, -4.75], [-62.53, -4.53], [-62.68, -4.18], [-62.75, -4.15], [-63.0, -4.25], [-63.53, -4.03], [-63.75, -3.5], [-63.65, -3.25], [-63.75, -3.0], [-63.54, -2.5], [-63.68, -2.18], [-64.03, -2.03], [-64.25, -1.5], [-64.15, -1.25], [-64.25, -1.0], [-64.15, -0.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.470932001012443}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.935190912950795}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.27953048128171, 24.145853467792108, 24.273277178122555]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.70188304130869, 23.50818619149993, 23.413355317803905]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9415987665135086, -2.02498074108128, -1.838993231257596]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3024713134366266, -2.4044090023982108, -2.470932001012443]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5160910532788283, -1.5847534115776045, -1.464985174229923]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8782079743037459, -1.7154686993062003, -1.8852545219144454]}}