Our Origins
On October 1, 2005, the Aeronomy Laboratory and Environmental Technology Laboratory (ETL) merged into the Earth System Research Laboratory (ESRL) as parts of the Chemical Sciences Division (CSD) and the Physical Sciences Division (PSD). Among the transition, the Aeronomy Laboratory Tropical Dynamics and Climate Group moved to the ESRL PSD, and the Environmental Technology Laboratory Optical Remote Sensing Division moved to the ESRL CSD. Following are the Aeronomy Laboratory and ETL Optical Remote Sensing Division "at a glance" prior to the Fall of 2005.