Back to Search
Start Over
Retrieval of xCO2 from ground-based mid-infrared (NDACC) solar absorption spectra and comparison to TCCON.
- Source :
- Atmospheric Measurement Techniques Discussions; 2015, Vol. 8 Issue 10, p10523-10548, 26p
- Publication Year :
- 2015
-
Abstract
- High resolution solar absorption spectra, taken within the Network for the Detection of Atmospheric Composition Change (NDACC) in the mid-infrared spectral region are used to infer partial or total column abundances of many gases. In this paper we present the retrieval of a column averaged mole fraction of carbon dioxide from NDACC-IRWG spectra taken with a Fourier-Transform-Infra-Red (FTIR) spectrometer at the site in Ny-Ålesund, Spitsbergen. The retrieved time series is compared to co-located standard TCCON measurements of total column CO<subscript>2</subscript>. Comparing the NDACC and TCCON retrievals we find that the sensitivity of the NDACC retrieval is lower in the troposphere (by a factor of two) and higher in the stratosphere, compared to TCCON. Thus, the NDACC retrieval is less sensitive to tropospheric changes (e.g. the seasonal cycle) in the column average. [ABSTRACT FROM AUTHOR]
- Subjects :
- HIGH resolution imaging
ATMOSPHERIC circulation
GAS absorption & adsorption
Subjects
Details
- Language :
- English
- ISSN :
- 18678610
- Volume :
- 8
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Atmospheric Measurement Techniques Discussions
- Publication Type :
- Academic Journal
- Accession number :
- 110480407
- Full Text :
- https://doi.org/10.5194/amtd-8-10523-2015