Solar Fourier Transform Spectrometry for high spectral resolution monitoring of radiation, aerosol, climate and, carbon: early results and future campaigns for ARM

 
Poster PDF

Authors

Bernard D. Zak — Multiple Academic
Steven Love — Los Alamos National Laboratory
Kim L. Nitschke — Los Alamos National Laboratory
Petr Chylek — Los Alamos National Laboratory
Manvendra K. Dubey — Los Alamos National Laboratory
Jon M Reisner — Los Alamos National Laboratory
Thom Rahn — Los Alamos National Laboratory
Bradley Flowers — Los Alamos National Laboratory
Rainer Volkamer — University of Colorado
Allison C Aiken — Los Alamos National Laboratory
Hope A. Michelsen — Sandia National Laboratories
Ray P. Bambha — Sandia National Laboratories
Paul Schrader — Sandia National Laboratories
Brad Henderson — Los Alamos National Laboratory

Keeley Costigan — Los Alamos National Laboratory

Category

Field Campaigns

Description

The FTS deployed at the San Juan substation with infrastructure that can be leveraged for the FACETS campaign proposed to ARM in 2013.
We have developed and installed a solar-tracking Fourier Transform Spectrometer (FTS) in San Juan County, New Mexico, to monitor regional-scale greenhouse gas, pollution, and aerosols from two power plants. Our system, deployed December 2010, is part of the Total Column Carbon Observing Network to validate satellites measuring CO2 from space. Our system has aluminum optics; InSb, InGaAs, and Si detectors; and CaF2 and quartz beam splitters, allowing it to cover the mid-near IR and UV-VIS regions, which allows us to monitor other trace gases and aerosol optical properties. We also have in situ instruments measuring CO2 and CH4 (Picarro Cavity Ringdown), CO, NOx, SO2, O3, and aerosols at our trailer. There will be an Aeronet station monitoring aerosols in the column and ARM micropulse lidars to measure boundary-layer heights. We are using these comprehensive multi-scale measurements to execute a systematic and coordinated observational, modeling, and satellite validation program. We will show early results on retrievals that allow us to evaluate signature relations between air pollutants and CO2 for attributions. We will show the utility of FTS spectra in evaluating radiation modules in climate models and deriving aerosol optical models at 10–100km scales relevant to models. We will report on our 2014 ARM field deployment in Manus, Brazil. We will also discuss the proposed 2013 Four Corners Aerosol Cloud Climate Experiment and Testbed for Scaling (FACETS) campaign that leverages our FTS, the new Atmospheric Terrestrial Mobile Laboratory, and the upgraded ARM facilities to improve model parameterizations precipitation processes in the southwest United States.