Cimel Sun-Photometers: New and Updated Data Products: Lunar Aerosol Optical Depth & Three-channel Cloud Optical Depth
Authors
Laurie Gregory — Brookhaven National Laboratory
Lynn L. Ma — Brookhaven National Laboratory
Richard Wagener — Brookhaven National Laboratory
Scott Giangrande — Brookhaven National Laboratory
Tami Fairless — Pacific Northwest National Laboratory
Category
ARM infrastructure
Description
New data products are available for the CIMEL Sunphotometer (CSPHOT).
ARM’s new triple mode Sun-Sky-Lunar model CE318-T sunphotometer, deployed recently at SGP, NSA, and OLI, have the capability to take nighttime measurements of Aerosol Optical Depth (AOD) and Precipitable Water Vapor (PWV). Provisional data, provided by NASA’s AErosol RObotic NETwork (AERONET), are available for evaluation through the ARM website.
The 3-channel Cloud Optical Depth (COD) zenith radiances retrieval extends the operational AERONET 2-channel algorithm, developed in 2010, from vegetated surfaces to all surfaces. The addition of the 1640 nm channel, along with the 870 nm and 440 nm channels, allows retrievals over surfaces such as the snow-covered regions of Alaska and ocean deployments. The new algorithm also provides cloud droplet effective radius. This poster reviews current data availability for the new product and presents preliminary results for the ARM AWARE Antarctic and SGP sites. Plans are also presented for implementing the new 3-channel retrieval as an operational Value Added Product (VAP)
In addition, ARM has recently updated collection and ingests to make AERONET version 3 data available for ARM CSPHOT deployments in ARM standard format.
