{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:17:47.060011", "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": "2018-Aug-21_to_2018-Aug-23_290.0_-7.0"}, "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": 2018080000815}, "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": "August 21 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 2018"}, "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": 98517.08713763948}, "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", "Peru"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "N.W.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": -7.0}, "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": 290.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 286.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -7.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -2.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -4.97], [-73.68, -4.82], [-73.65, -4.75], [-73.75, -4.5], [-73.53, -3.97], [-73.18, -3.82], [-73.03, -3.47], [-72.5, -3.25], [-72.25, -3.35], [-72.12, -3.3], [-72.25, -3.0], [-72.03, -2.47], [-71.5, -2.25], [-71.25, -2.35], [-71.0, -2.25], [-70.47, -2.47], [-70.25, -3.0], [-70.35, -3.25], [-70.32, -3.32], [-69.97, -3.47], [-69.75, -4.0], [-69.96, -4.5], [-69.82, -4.82], [-69.47, -4.97], [-69.25, -5.5], [-69.46, -6.0], [-69.25, -6.5], [-69.35, -6.75], [-69.25, -7.0], [-69.47, -7.53], [-70.0, -7.75], [-70.53, -7.53], [-70.68, -7.18], [-71.03, -7.03], [-71.18, -6.68], [-71.53, -6.53], [-71.68, -6.18], [-71.75, -6.15], [-71.82, -6.18], [-71.97, -6.53], [-72.5, -6.75], [-72.75, -6.65], [-73.0, -6.75], [-73.25, -6.65], [-73.5, -6.75], [-74.03, -6.53], [-74.25, -6.0], [-74.15, -5.75], [-74.25, -5.5], [-74.03, -4.97]]]]}, "2018-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -4.97], [-73.68, -4.82], [-73.65, -4.75], [-73.75, -4.5], [-73.53, -3.97], [-73.18, -3.82], [-73.03, -3.47], [-72.5, -3.25], [-72.25, -3.35], [-72.12, -3.3], [-72.25, -3.0], [-72.03, -2.47], [-71.5, -2.25], [-71.25, -2.35], [-71.0, -2.25], [-70.47, -2.47], [-70.25, -3.0], [-70.35, -3.25], [-70.32, -3.32], [-69.97, -3.47], [-69.75, -4.0], [-69.96, -4.5], [-69.82, -4.82], [-69.47, -4.97], [-69.25, -5.5], [-69.46, -6.0], [-69.25, -6.5], [-69.35, -6.75], [-69.25, -7.0], [-69.47, -7.53], [-70.0, -7.75], [-70.53, -7.53], [-70.68, -7.18], [-71.03, -7.03], [-71.18, -6.68], [-71.53, -6.53], [-71.68, -6.18], [-71.75, -6.15], [-71.82, -6.18], [-71.97, -6.53], [-72.5, -6.75], [-72.75, -6.65], [-73.0, -6.75], [-73.25, -6.65], [-73.5, -6.75], [-74.03, -6.53], [-74.25, -6.0], [-74.15, -5.75], [-74.25, -5.5], [-74.03, -4.97]]]]}, "2018-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-74.03, -4.97], [-73.68, -4.82], [-73.65, -4.75], [-73.75, -4.5], [-73.53, -3.97], [-73.18, -3.82], [-73.03, -3.47], [-72.5, -3.25], [-72.25, -3.35], [-72.12, -3.3], [-72.25, -3.0], [-72.03, -2.47], [-71.5, -2.25], [-71.25, -2.35], [-71.0, -2.25], [-70.47, -2.47], [-70.25, -3.0], [-70.35, -3.25], [-70.32, -3.32], [-69.97, -3.47], [-69.75, -4.0], [-69.96, -4.5], [-69.82, -4.82], [-69.47, -4.97], [-69.25, -5.5], [-69.46, -6.0], [-69.25, -6.5], [-69.35, -6.75], [-69.25, -7.0], [-69.47, -7.53], [-70.0, -7.75], [-70.53, -7.53], [-70.68, -7.18], [-71.03, -7.03], [-71.18, -6.68], [-71.53, -6.53], [-71.68, -6.18], [-71.75, -6.15], [-71.82, -6.18], [-71.97, -6.53], [-72.5, -6.75], [-72.75, -6.65], [-73.0, -6.75], [-73.25, -6.65], [-73.5, -6.75], [-74.03, -6.53], [-74.25, -6.0], [-74.15, -5.75], [-74.25, -5.5], [-74.03, -4.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.2232729571661025}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.1282287364420576}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.86428726034046, 22.712567026336615, 23.864063529298505]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.4902432454698, 22.15747166226822, 23.683582735744892]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.3826033759983147, -2.5743514686547364, -1.4277313646731216]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.2232729571661025, -3.3319830187290336, -1.7135436157615231]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.8914569879468242, -2.0522130903642286, -1.1417427030274845]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.861837627756753, -2.452191706003323, -1.30150899689238]}}