{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:07.084308", "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-23_to_2015-Jan-25_301.5_-6.0"}, "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": 2015010001087}, "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 23 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 25 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": 52315.103597878275}, "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": -6.0}, "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": 301.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 301.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -5.0], [-62.03, -4.47], [-61.68, -4.32], [-61.53, -3.97], [-61.0, -3.75], [-60.47, -3.97], [-60.32, -4.32], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.0, -4.25], [-58.47, -4.47], [-58.32, -4.82], [-57.97, -4.97], [-57.75, -5.5], [-57.85, -5.75], [-57.75, -6.0], [-57.97, -6.53], [-58.5, -6.75], [-58.75, -6.65], [-59.0, -6.75], [-59.25, -6.65], [-59.5, -6.75], [-59.75, -6.65], [-60.0, -6.75], [-60.53, -6.53], [-60.68, -6.18], [-60.75, -6.15], [-61.0, -6.25], [-61.53, -6.03], [-61.68, -5.68], [-62.03, -5.53], [-62.25, -5.0]]]]}, "2015-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -5.0], [-62.03, -4.47], [-61.68, -4.32], [-61.53, -3.97], [-61.0, -3.75], [-60.47, -3.97], [-60.32, -4.32], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.0, -4.25], [-58.47, -4.47], [-58.32, -4.82], [-57.97, -4.97], [-57.75, -5.5], [-57.85, -5.75], [-57.75, -6.0], [-57.97, -6.53], [-58.5, -6.75], [-58.75, -6.65], [-59.0, -6.75], [-59.25, -6.65], [-59.5, -6.75], [-59.75, -6.65], [-60.0, -6.75], [-60.53, -6.53], [-60.68, -6.18], [-60.75, -6.15], [-61.0, -6.25], [-61.53, -6.03], [-61.68, -5.68], [-62.03, -5.53], [-62.25, -5.0]]]]}, "2015-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -5.0], [-62.03, -4.47], [-61.68, -4.32], [-61.53, -3.97], [-61.0, -3.75], [-60.47, -3.97], [-60.32, -4.32], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.0, -4.25], [-58.47, -4.47], [-58.32, -4.82], [-57.97, -4.97], [-57.75, -5.5], [-57.85, -5.75], [-57.75, -6.0], [-57.97, -6.53], [-58.5, -6.75], [-58.75, -6.65], [-59.0, -6.75], [-59.25, -6.65], [-59.5, -6.75], [-59.75, -6.65], [-60.0, -6.75], [-60.53, -6.53], [-60.68, -6.18], [-60.75, -6.15], [-61.0, -6.25], [-61.53, -6.03], [-61.68, -5.68], [-62.03, -5.53], [-62.25, -5.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.325492777971135}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.6404875574057924}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.5398563818174, 23.914766050352682, 24.354467064455605]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.278363290029404, 23.3666073540781, 23.71151236914028]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3278898703875839, -2.007658931555481, -1.5859138702743127]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6919065854813766, -2.325492777971135, -1.91515439186918]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4451241020677308, -2.1378083532421015, -1.6872741837846466]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.816457590097074, -2.5361204317189694, -2.1651706097693326]}}