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A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft

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A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft. / Stutz, Jochen; Werner, Bodo; Spolaor, Max; Scalone, Lisa; Festa, James; Tsai, Catalina; Cheung, Ross; Colosimo, Santo F.; Tricoli, Ugo; Raecke, Rasmus; Hossaini, Ryan; Chipperfield, Martyn P.; Feng, Wuhu; Gao, Ru-Shan; Hintsa, Eric J.; Elkins, JamesW.; Moore, Fred L.; Daube, Bruce; Pittman, Jasna; Wofsy, Steven; Pfeilsticker, Klaus.

In: Atmospheric Measurement Techniques, Vol. 10, No. 3, 15.03.2017, p. 1017-1042.

Research output: Contribution to journalJournal article

Harvard

Stutz, J, Werner, B, Spolaor, M, Scalone, L, Festa, J, Tsai, C, Cheung, R, Colosimo, SF, Tricoli, U, Raecke, R, Hossaini, R, Chipperfield, MP, Feng, W, Gao, R-S, Hintsa, EJ, Elkins, J, Moore, FL, Daube, B, Pittman, J, Wofsy, S & Pfeilsticker, K 2017, 'A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft', Atmospheric Measurement Techniques, vol. 10, no. 3, pp. 1017-1042. https://doi.org/10.5194/amt-10-1017-2017

APA

Stutz, J., Werner, B., Spolaor, M., Scalone, L., Festa, J., Tsai, C., Cheung, R., Colosimo, S. F., Tricoli, U., Raecke, R., Hossaini, R., Chipperfield, M. P., Feng, W., Gao, R-S., Hintsa, E. J., Elkins, J., Moore, F. L., Daube, B., Pittman, J., ... Pfeilsticker, K. (2017). A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft. Atmospheric Measurement Techniques, 10(3), 1017-1042. https://doi.org/10.5194/amt-10-1017-2017

Vancouver

Stutz J, Werner B, Spolaor M, Scalone L, Festa J, Tsai C et al. A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft. Atmospheric Measurement Techniques. 2017 Mar 15;10(3):1017-1042. https://doi.org/10.5194/amt-10-1017-2017

Author

Stutz, Jochen ; Werner, Bodo ; Spolaor, Max ; Scalone, Lisa ; Festa, James ; Tsai, Catalina ; Cheung, Ross ; Colosimo, Santo F. ; Tricoli, Ugo ; Raecke, Rasmus ; Hossaini, Ryan ; Chipperfield, Martyn P. ; Feng, Wuhu ; Gao, Ru-Shan ; Hintsa, Eric J. ; Elkins, JamesW. ; Moore, Fred L. ; Daube, Bruce ; Pittman, Jasna ; Wofsy, Steven ; Pfeilsticker, Klaus. / A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft. In: Atmospheric Measurement Techniques. 2017 ; Vol. 10, No. 3. pp. 1017-1042.

Bibtex

@article{7261e13bc3b745fc97a840a108ae47f4,
title = "A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft",
abstract = "Observations of atmospheric trace gases in the tropical upper troposphere (UT), tropical tropopause layer (TTL), and lower stratosphere (LS) require dedicated measurement platforms and instrumentation. Here we present a new limb-scanning Differential Optical Absorption Spectroscopy (DOAS) instrument developed for NASA's Global Hawk (GH) unmanned aerial system and deployed during the Airborne Tropical TRopopause EXperiment (ATTREX). The mini-DOAS system is designed for automatic operation under unpressurized and unheated conditions at 14-18 km altitude, collecting scattered sunlight in three wavelength windows: UV (301-387 nm), visible (410-525 nm), and near infrared (900-1700 nm). A telescope scanning unit allows selection of a viewing angle around the limb, as well as realtime correction of the aircraft pitch. Due to the high altitude, solar reference spectra are measured using diffusors and direct sunlight. The DOAS approach allows retrieval of slant column densities (SCDs) of O-3, O-4, NO2, and BrO with relative errors similar to other aircraft DOAS systems. Radiative transfer considerations show that the retrieval of trace gas mixing ratios from the observed SCD based on O-4 ob-servations, the most common approach for DOAS measurements, is inadequate for high-altitude observations. This is due to the frequent presence of low-altitude clouds, which shift the sensitivity of the O-4 SCD into the lower atmosphere and make it highly dependent on cloud coverage. A newly developed technique that constrains the radiative transfer by comparing in situ and DOAS O-3 observations overcomes this issue. Extensive sensitivity calculations show that the novel O-3-scaling technique allows the retrieval of BrO and NO2 mixing ratios at high accuracies of 0.5 and 15 ppt, respectively. The BrO and NO2 mixing ratios and vertical profiles observed during ATTREX thus provide new insights into ozone and halogen chemistry in the UT, TTL, and LS.",
keywords = "TROPICAL TROPOPAUSE LAYER, CHEMICAL-TRANSPORT MODEL, IN-SITU MEASUREMENTS, LIMB MEASUREMENTS, LOWER STRATOSPHERE, PROFILE RETRIEVAL, SCIAMACHY LIMB, CROSS-SECTIONS, AEROSOL EXTINCTION, GAS-CHROMATOGRAPH",
author = "Jochen Stutz and Bodo Werner and Max Spolaor and Lisa Scalone and James Festa and Catalina Tsai and Ross Cheung and Colosimo, {Santo F.} and Ugo Tricoli and Rasmus Raecke and Ryan Hossaini and Chipperfield, {Martyn P.} and Wuhu Feng and Ru-Shan Gao and Hintsa, {Eric J.} and JamesW. Elkins and Moore, {Fred L.} and Bruce Daube and Jasna Pittman and Steven Wofsy and Klaus Pfeilsticker",
year = "2017",
month = mar,
day = "15",
doi = "10.5194/amt-10-1017-2017",
language = "English",
volume = "10",
pages = "1017--1042",
journal = "Atmospheric Measurement Techniques",
issn = "1867-1381",
publisher = "Copernicus GmbH (Copernicus Publications) on behalf of the European Geosciences Union (EGU)",
number = "3",

}

RIS

TY - JOUR

T1 - A new Differential Optical Absorption Spectroscopy instrument to study atmospheric chemistry from a high- altitude unmanned aircraft

AU - Stutz, Jochen

AU - Werner, Bodo

AU - Spolaor, Max

AU - Scalone, Lisa

AU - Festa, James

AU - Tsai, Catalina

AU - Cheung, Ross

AU - Colosimo, Santo F.

AU - Tricoli, Ugo

AU - Raecke, Rasmus

AU - Hossaini, Ryan

AU - Chipperfield, Martyn P.

AU - Feng, Wuhu

AU - Gao, Ru-Shan

AU - Hintsa, Eric J.

AU - Elkins, JamesW.

AU - Moore, Fred L.

AU - Daube, Bruce

AU - Pittman, Jasna

AU - Wofsy, Steven

AU - Pfeilsticker, Klaus

PY - 2017/3/15

Y1 - 2017/3/15

N2 - Observations of atmospheric trace gases in the tropical upper troposphere (UT), tropical tropopause layer (TTL), and lower stratosphere (LS) require dedicated measurement platforms and instrumentation. Here we present a new limb-scanning Differential Optical Absorption Spectroscopy (DOAS) instrument developed for NASA's Global Hawk (GH) unmanned aerial system and deployed during the Airborne Tropical TRopopause EXperiment (ATTREX). The mini-DOAS system is designed for automatic operation under unpressurized and unheated conditions at 14-18 km altitude, collecting scattered sunlight in three wavelength windows: UV (301-387 nm), visible (410-525 nm), and near infrared (900-1700 nm). A telescope scanning unit allows selection of a viewing angle around the limb, as well as realtime correction of the aircraft pitch. Due to the high altitude, solar reference spectra are measured using diffusors and direct sunlight. The DOAS approach allows retrieval of slant column densities (SCDs) of O-3, O-4, NO2, and BrO with relative errors similar to other aircraft DOAS systems. Radiative transfer considerations show that the retrieval of trace gas mixing ratios from the observed SCD based on O-4 ob-servations, the most common approach for DOAS measurements, is inadequate for high-altitude observations. This is due to the frequent presence of low-altitude clouds, which shift the sensitivity of the O-4 SCD into the lower atmosphere and make it highly dependent on cloud coverage. A newly developed technique that constrains the radiative transfer by comparing in situ and DOAS O-3 observations overcomes this issue. Extensive sensitivity calculations show that the novel O-3-scaling technique allows the retrieval of BrO and NO2 mixing ratios at high accuracies of 0.5 and 15 ppt, respectively. The BrO and NO2 mixing ratios and vertical profiles observed during ATTREX thus provide new insights into ozone and halogen chemistry in the UT, TTL, and LS.

AB - Observations of atmospheric trace gases in the tropical upper troposphere (UT), tropical tropopause layer (TTL), and lower stratosphere (LS) require dedicated measurement platforms and instrumentation. Here we present a new limb-scanning Differential Optical Absorption Spectroscopy (DOAS) instrument developed for NASA's Global Hawk (GH) unmanned aerial system and deployed during the Airborne Tropical TRopopause EXperiment (ATTREX). The mini-DOAS system is designed for automatic operation under unpressurized and unheated conditions at 14-18 km altitude, collecting scattered sunlight in three wavelength windows: UV (301-387 nm), visible (410-525 nm), and near infrared (900-1700 nm). A telescope scanning unit allows selection of a viewing angle around the limb, as well as realtime correction of the aircraft pitch. Due to the high altitude, solar reference spectra are measured using diffusors and direct sunlight. The DOAS approach allows retrieval of slant column densities (SCDs) of O-3, O-4, NO2, and BrO with relative errors similar to other aircraft DOAS systems. Radiative transfer considerations show that the retrieval of trace gas mixing ratios from the observed SCD based on O-4 ob-servations, the most common approach for DOAS measurements, is inadequate for high-altitude observations. This is due to the frequent presence of low-altitude clouds, which shift the sensitivity of the O-4 SCD into the lower atmosphere and make it highly dependent on cloud coverage. A newly developed technique that constrains the radiative transfer by comparing in situ and DOAS O-3 observations overcomes this issue. Extensive sensitivity calculations show that the novel O-3-scaling technique allows the retrieval of BrO and NO2 mixing ratios at high accuracies of 0.5 and 15 ppt, respectively. The BrO and NO2 mixing ratios and vertical profiles observed during ATTREX thus provide new insights into ozone and halogen chemistry in the UT, TTL, and LS.

KW - TROPICAL TROPOPAUSE LAYER

KW - CHEMICAL-TRANSPORT MODEL

KW - IN-SITU MEASUREMENTS

KW - LIMB MEASUREMENTS

KW - LOWER STRATOSPHERE

KW - PROFILE RETRIEVAL

KW - SCIAMACHY LIMB

KW - CROSS-SECTIONS

KW - AEROSOL EXTINCTION

KW - GAS-CHROMATOGRAPH

U2 - 10.5194/amt-10-1017-2017

DO - 10.5194/amt-10-1017-2017

M3 - Journal article

VL - 10

SP - 1017

EP - 1042

JO - Atmospheric Measurement Techniques

JF - Atmospheric Measurement Techniques

SN - 1867-1381

IS - 3

ER -