Aircraft instrument for simultaneous, <i>in situ</i> measurement of NO3 and N2O5 via pulsed cavity ring-down spectroscopy
-
- William P. Dubé
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305 and Cooperative Institute for Research in the Environmental Sciences, , Boulder, Colorado 80309
-
- Steven S. Brown
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305
-
- Hans D. Osthoff
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305 and Cooperative Institute for Research in the Environmental Sciences, , Boulder, Colorado 80309
-
- Maya R. Nunley
- NOAA Earth System Research Laboratory , R/CSD2, 235 Broadway, Boulder, CO 80305
-
- Steven J. Ciciora
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305
-
- Mark W. Paris
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305
-
- Richard J. McLaughlin
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305
-
- A. R. Ravishankara
- NOAA Earth System Research Laboratory , Chemical Sciences Division, 325 Broadway, Boulder, Colorado 80305 and Department of Chemistry and Biochemistry, , Boulder, Colorado 80309
書誌事項
- 公開日
- 2006-03-01
- DOI
-
- 10.1063/1.2176058
- 公開者
- AIP Publishing
この論文をさがす
説明
<jats:p>This article describes a cavity ring-down spectrometer (CaRDS) specifically designed and constructed for installation on the NOAA WP-3D Orion (P-3) aircraft for sensitive, rapid in situ measurement of NO3 and N2O5. While similar to our previously described CaRDS instrument, this instrument has significant improvements in the signal-to-noise ratio, the time resolution, and in overall size and weight. Additionally, the instrument utilizes a custom-built, automated filter changer that was designed and constructed to meet the requirement for removal of particulate matter in the airflow while allowing fully autonomous instrument operation. The CaRDS instrument has a laboratory detection sensitivity of 4×10−11cm−1 in absorbance or 0.1pptv (pptv denotes parts per trillion volume) of NO3 in a 1s average, although the typical detection sensitivities encountered in the field were 0.5pptv for NO3 and 1pptv for N2O5. The instrument accuracy is 25% for NO3 and 20%–40% for N2O5, limited mainly by the uncertainty in the inlet transmission. The instrument has been deployed on the P-3 aircraft as part of a major field campaign in the summer of 2004 and during several ground and tower deployments near Boulder, CO.</jats:p>
収録刊行物
-
- Review of Scientific Instruments
-
Review of Scientific Instruments 77 (3), 2006-03-01
AIP Publishing