A33I-3319:
Introducing and Validating the New Aura CO Product Derived from Joined TES and MLS Measurements
Wednesday, 17 December 2014
Ming Luo1, Michael J Schwartz1, William G Read1, Robert L Herman1, Susan Sund Kulawik1,2, John Worden1, Nathaniel J Livesey1, Kevin W Bowman1 and Colm Sweeney3, (1)JPL / Caltech, Pasadena, CA, United States, (2)Bay Area Environmental Research Institute Moffett Field, Moffett Field, CA, United States, (3)NOAA/Earth System Research Lab, Boulder, CO, United States
Abstract:
The new Aura CO product consists of CO vertical profiles derived from TES and MLS measurements. This product has been released to the public. We describe the algorithms for generating the product and the evaluations of it using in-situ measurements. TES and MLS standalone CO profile retrievals are sensitive respectively to lower-mid troposphere and upper troposphere and above. We pair TES nadir and MLS limb tangent locations within 6-8 min and less than 220 km. The paired radiance measurements of the two instruments per location are optimally combined to retrieve a single CO profile along with other interfering species. This combined CO profile has improved vertical resolution and vertical range over the two standalone products, especially in the upper-troposphere/lower-stratosphere. For example, the degree of freedom for signal (DOFS) between surface and 50hPa for TES alone is < 2, and for the combined CO profiles is 2-4. We will present the comparison results between the Aura CO and AirCore, HIPPO, and MOZAIC observations. The new Aura CO product provides a unique data set to studies on tropospheric transport of air pollutants and troposphere-stratospheric exchange processes.
