This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
New York September NEXRAD. This radar image shows the smoke plume from the World Trade Center after the terrorist attacks of at Eastern Daylight Time overlain on topographical map The data is from the NWS NEXRAD radar at KDIX Mt Holly NJ and was processed in the NCDC's ncdc noaa gov JAVA NEXRAD tool Radar data is from the ncdc