{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:02:07.870192", "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-25_to_2015-Jan-28_302.0_-13.0"}, "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": 2015010001192}, "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 25 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 28 2015"}, "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": 99267.29020562333}, "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": ["South-American-Monsoon"]}, "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": -13.0}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.15, -12.25], [-60.25, -12.0], [-60.03, -11.47], [-59.68, -11.32], [-59.53, -10.97], [-59.0, -10.75], [-58.47, -10.97], [-58.32, -11.32], [-58.25, -11.35], [-58.0, -11.25], [-57.47, -11.47], [-57.32, -11.82], [-57.25, -11.85], [-57.0, -11.75], [-56.47, -11.97], [-56.25, -12.5], [-56.47, -13.03], [-57.0, -13.25], [-57.25, -13.15], [-57.32, -13.18], [-57.47, -13.53], [-58.0, -13.75], [-58.25, -13.65], [-58.32, -13.68], [-58.47, -14.03], [-59.0, -14.25], [-59.53, -14.03], [-59.68, -13.68], [-60.03, -13.53], [-60.25, -13.0], [-60.15, -12.75], [-60.25, -12.5], [-60.15, -12.25]]]]}, "2015-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.15, -12.75], [-60.25, -12.5], [-60.15, -12.25], [-60.25, -12.0], [-60.03, -11.47], [-59.68, -11.32], [-59.53, -10.97], [-59.0, -10.75], [-58.47, -10.97], [-58.32, -11.32], [-58.25, -11.35], [-58.0, -11.25], [-57.47, -11.47], [-57.32, -11.82], [-57.25, -11.85], [-57.0, -11.75], [-56.47, -11.97], [-56.25, -12.5], [-56.35, -12.75], [-56.25, -13.0], [-56.35, -13.25], [-56.25, -13.5], [-56.35, -13.75], [-56.25, -14.0], [-56.47, -14.53], [-56.87, -14.7], [-56.75, -15.0], [-56.97, -15.53], [-57.5, -15.75], [-57.75, -15.65], [-58.0, -15.75], [-58.25, -15.65], [-58.5, -15.75], [-59.03, -15.53], [-59.18, -15.18], [-59.53, -15.03], [-59.75, -14.5], [-59.65, -14.25], [-59.68, -14.18], [-60.03, -14.03], [-60.25, -13.5], [-60.15, -13.25], [-60.25, -13.0], [-60.15, -12.75]]]]}, "2015-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.15, -12.75], [-60.25, -12.5], [-60.15, -12.25], [-60.25, -12.0], [-60.03, -11.47], [-59.68, -11.32], [-59.53, -10.97], [-59.0, -10.75], [-58.47, -10.97], [-58.32, -11.32], [-58.25, -11.35], [-58.0, -11.25], [-57.47, -11.47], [-57.32, -11.82], [-57.25, -11.85], [-57.0, -11.75], [-56.47, -11.97], [-56.25, -12.5], [-56.35, -12.75], [-56.25, -13.0], [-56.35, -13.25], [-56.25, -13.5], [-56.35, -13.75], [-56.25, -14.0], [-56.47, -14.53], [-56.87, -14.7], [-56.75, -15.0], [-56.97, -15.53], [-57.5, -15.75], [-57.75, -15.65], [-58.0, -15.75], [-58.25, -15.65], [-58.5, -15.75], [-59.03, -15.53], [-59.18, -15.18], [-59.53, -15.03], [-59.75, -14.5], [-59.65, -14.25], [-59.68, -14.18], [-60.03, -14.03], [-60.25, -13.5], [-60.15, -13.25], [-60.25, -13.0], [-60.15, -12.75]]]]}, "2015-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.15, -12.75], [-60.25, -12.5], [-60.15, -12.25], [-60.25, -12.0], [-60.03, -11.47], [-59.68, -11.32], [-59.53, -10.97], [-59.0, -10.75], [-58.47, -10.97], [-58.32, -11.32], [-58.25, -11.35], [-58.0, -11.25], [-57.47, -11.47], [-57.32, -11.82], [-57.25, -11.85], [-57.0, -11.75], [-56.47, -11.97], [-56.25, -12.5], [-56.35, -12.75], [-56.25, -13.0], [-56.35, -13.25], [-56.25, -13.5], [-56.35, -13.75], [-56.25, -14.0], [-56.47, -14.53], [-56.87, -14.7], [-56.75, -15.0], [-56.97, -15.53], [-57.5, -15.75], [-57.75, -15.65], [-58.0, -15.75], [-58.25, -15.65], [-58.5, -15.75], [-59.03, -15.53], [-59.18, -15.18], [-59.53, -15.03], [-59.75, -14.5], [-59.65, -14.25], [-59.68, -14.18], [-60.03, -14.03], [-60.25, -13.5], [-60.15, -13.25], [-60.25, -13.0], [-60.15, -12.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.1251281283198296}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5351249489373557}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.259641009598226, 22.931177679003838, 23.22727083751556, 23.080139442309815]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.54535363215342, 21.76106844854752, 22.142605312144326, 22.087994229126764]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4513201623075354, -1.7289169377971922, -1.407017762027997, -1.5100727708073967]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.90602328068627, -2.1251281283198296, -1.8856653243092865, -1.7799804373132702]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6074872261361246, -1.8958632821065369, -1.5670921053402211, -1.7155497048275872]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.1716856922696968, -2.4573171558390015, -1.9539289515638214, -1.9570685653078173]}}