Results 81 to 90 of about 2,581 (194)

Tropospheric NO₂, SO₂, and HCHO over the East China Sea, using ship-based MAX-DOAS observations and comparison with OMI and OMPS satellite data [PDF]

Atmospheric Chemistry and Physics, 2018
In this study, ship-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements were performed in the East China Sea (ECS) area in June 2017.
W. Tan, C. Liu, C. Liu, C. Liu, C. Liu, S. Wang, S. Wang, C. Xing, W. Su, C. Zhang, C. Xia, H. Liu, Z. Cai, J. Liu   +13 more
doaj   +1 more source

Analysis of satellite-derived Arctic tropospheric BrO columns in conjunction with aircraft measurements during ARCTAS and ARCPAC [PDF]

, 2012
We derive tropospheric column BrO during the ARCTAS and ARCPAC field campaigns in spring 2008 using retrievals of total column BrO from the satellite UV nadir sensors OMI and GOME-2 using a radiative transfer model and stratospheric column BrO from a ...
Canty, T, Chance, K, Choi, S, Curry, J, da Silva, Arlindo, Dibb, Jack E., Diskin, Glenn, Huey, L Gregory, Joiner, J, Kinnison, D, Kurosu, T P, Levelt, P F, Liao, J, Neuman, J A, Nowak, J, Richter, A, Ryerson, Thomas B, Salawitch, R J, Tilmes, S, Wang, Yuhang, Weinheimer, Andrew, Zeng, T   +21 more
core   +1 more source

Comparison of ambient aerosol extinction coefficients obtained from in-situ, MAX-DOAS and LIDAR measurements at Cabauw [PDF]

, 2011
In the field, aerosol in-situ measurements are often performed under dry conditions (relative humidity RH < 30-40%). Since ambient aerosol particles experience hygroscopic growth at enhanced RH, their microphysical and optical properties - especially the
Apituley, A., Baltensperger, U., Beirle, S., Clemer, K., de Leeuw, G., Ehn, M., Frieß, U., Henzing, J., Irie, H., Mikkilä, J., Moerman, M., Petäjä, T., Shaiganfar, R., van Roozendael, M., Wagner, T., Weingartner, E., Wilson, K., Yilmaz, S., Zieger, P.   +18 more
core   +3 more sources

Uncertainty‐Aware Machine Learning Bias Correction and Filtering for OCO‐2. 2

Earth and Space Science, Volume 12, Issue 11, November 2025.
Abstract Quality filtering of satellite XCO2 retrievals is essential for every downstream science application, yet the community still grapples with the trade‐off between retaining data availability and suppressing biases. For the Orbiting Carbon Observatory‐2 (OCO‐2) record in particular, the long‐standing binary quality flag targets the single use ...
William Keely, Steffen Mauceri, Robert Nelson, Josh Laughner, Christopher W. O’Dell, Steven Massie, David Baker, Matthäus Kiel, Otto Lamminpää, Jonathan Hobbs, Abhishek Chatterjee, Tommy Taylor, Paul Wennberg, Sean Crowell, Britt Stephens, Vivienne Payne   +15 more
wiley   +1 more source

Long-term continuous observations of the horizontal inhomogeneity in lower-atmospheric water vapor concentration using A-SKY/MAX-DOAS

Progress in Earth and Planetary Science
We conducted long-term (2017–2022) continuous observations of water vapor concentration in the lower atmosphere (0–1 km) over Tsukuba and Chiba, Japan, using the multi-axis differential optical absorption spectroscopy (MAX-DOAS) technique within the ...
Shunya Mizobuchi, Hitoshi Irie, Shingo Shimizu   +2 more
doaj   +1 more source

Latitudinal distribution of reactive iodine in the Eastern Pacific and its link to open ocean sources [PDF]

, 2012
Ship-based Multi-Axis Differential Optical Absorption Spectroscopy measurements of iodine monoxide (IO) and atmospheric and seawater Gas Chromatography-Mass Spectrometer observations of methyl iodide (CH3I) were made in the Eastern Pacific marine ...
Gomez Marti­n, JC, Hay, TD, Hu, L, Liu, Y, Mahajan, AS, Ordonez, C, Plane, JMC, Prados-Roman, C, Royer, SJ, Saiz-Lopez, A., Yvon-Lewis, S   +10 more
core   +4 more sources

Summertime Diurnal Variability of Formaldehyde Over the Contiguous United States: Constraints From Pandonia Global Network

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The diurnal cycle of Formaldehyde (HCHO) provide critical insights into tropospheric photochemistry. Here we use tropospheric HCHO retrievals from the Pandonia Global Network (PGN), combined with NASA's GEOS Composition Forecast (GEOS‐CF) model to understand the diurnal variation of summertime HCHO across the contiguous US.
Tianlang Zhao, Jingqiu Mao, Xiaoyi Zhao, Apoorva Pandey, Viral Shah, Katherine Emma Knowland, Jennifer Kaiser, Martin Tiefengraber, Manuel Gebetsberger, Alexander Cede, Elena Spinei, Thomas F. Hanisco   +11 more
wiley   +1 more source

Monitoring shipping emissions in the German Bight using MAX-DOAS measurements [PDF]

Atmospheric Chemistry and Physics, 2017
Abstract. A 3-year time series of ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) measurements of NO2 and SO2 on the island Neuwerk has been analyzed for contributions from shipping emissions. The island is located in the German Bight, close to the main shipping lane (at a distance of 6–7 km) into the river Elbe towards ...
A. Seyler, F. Wittrock, L. Kattner, L. Kattner, B. Mathieu-Üffing, B. Mathieu-Üffing, E. Peters, A. Richter, S. Schmolke, J. P. Burrows   +9 more
openaire   +3 more sources

Full-azimuthal imaging-DOAS observations of NO₂ and O₄ during CINDI-2 [PDF]

Atmospheric Measurement Techniques, 2019
A novel imaging-DOAS (differential optical absorption spectroscopy) instrument IMPACT (Imaging MaPper for AtmospheriC observaTions) is presented combining full-azimuthal pointing (360∘) with a large vertical coverage (∼41∘).
E. Peters, E. Peters, M. Ostendorf, T. Bösch, A. Seyler, A. Schönhardt, S. F. Schreier, J. S. Henzing, F. Wittrock, A. Richter, M. Vrekoussis, M. Vrekoussis, M. Vrekoussis, J. P. Burrows   +13 more
doaj   +1 more source

MAX-DOAS measurements of tropospheric NO$_{2}$ and HCHO in Munich and the comparison to OMI and TROPOMI satellite observations [PDF]

, 2020
We present two-dimensional scanning Multi-AXis Differential Optical Absorption Spectroscopy (MAX-DOAS) observations of nitrogen dioxide (NO$_{2}$) and formaldehyde (HCHO) in Munich.
Alberti, Carlos, Chan, Ka Lok, Cheng, Zhibin, De Smedt, Isabelle, Geffen, Jos van, Wenig, Mark, Wiegner, Matthias, Ye, Sheng   +7 more
core   +2 more sources