Self-consistent Method for Determining Vertical Profiles of Aerosol and Atmospheric Properties Using a High Spectral Resolution Rayleigh-Mie Lidar

1993 ◽  
Vol 10 (4) ◽  
pp. 533-545 ◽  
Author(s):  
D. A. Krueger ◽  
L. M. Caldwell ◽  
C. Y. She ◽  
R. J. Alvarez
Keyword(s):  
Spectral Resolution ◽  
High Spectral Resolution ◽  
Vertical Profiles ◽  
Self Consistent ◽  
Consistent Method ◽  
Mie Lidar

scholarly journals Long-term validation of ESA operational retrieval (version 6.0) of MIPAS Envisat vertical profiles of methane, nitrous oxide, CFC11, and CFC12 using balloon-borne observations and trajectory matching

2016 ◽  
Vol 9 (3) ◽  
pp. 1051-1062 ◽  
Author(s):  
Andreas Engel ◽  
Harald Bönisch ◽  
Tim Schwarzenberger ◽  
Hans-Peter Haase ◽  
Katja Grunow ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
European Space Agency ◽  
High Spectral Resolution ◽  
Vertical Profiles ◽  
Validation Data ◽  
Data Set ◽  
Mixing Ratios ◽  
Trajectory Matching ◽  
Wide Range ◽  
Resolution Data

Abstract. MIPAS-Envisat is a satellite-borne sensor which measured vertical profiles of a wide range of trace gases from 2002 to 2012 using IR emission spectroscopy. We present geophysical validation of the MIPAS-Envisat operational retrieval (version 6.0) of N2O, CH4, CFC-12, and CFC-11 by the European Space Agency (ESA). The geophysical validation data are derived from measurements of samples collected by a cryogenic whole air sampler flown to altitudes of up to 34 km by means of large scientific balloons. In order to increase the number of coincidences between the satellite and the balloon observations, we applied a trajectory matching technique. The results are presented for different time periods due to a change in the spectroscopic resolution of MIPAS in early 2005. Retrieval results for N2O, CH4, and CFC-12 show partly good agreement for some altitude regions, which differs for the periods with different spectroscopic resolution. The more recent low spectroscopic resolution data above 20 km altitude show agreement with the combined uncertainties, while there is a tendency of the earlier high spectral resolution data set to underestimate these species above 25 km. The earlier high spectral resolution data show a significant overestimation of the mixing ratios for N2O, CH4, and CFC-12 below 20 km. These differences need to be considered when using these data. The CFC-11 results from the operation retrieval version 6.0 cannot be recommended for scientific studies due to a systematic overestimation of the CFC-11 mixing ratios at all altitudes.

High-spectral-resolution Rayleigh–Mie lidar measurement of aerosol and atmospheric profiles

1992 ◽  
Vol 17 (7) ◽  
pp. 541 ◽  
Author(s):  
C. Y. She ◽  
R. J. Alvarez ◽  
L. M. Caldwell ◽  
D. A. Krueger
Keyword(s):  
Spectral Resolution ◽  
High Spectral Resolution ◽  
Lidar Measurement ◽  
Atmospheric Profiles ◽  
Mie Lidar

Vertical profiles of aerosol volume from high-spectral-resolution infrared transmission measurements I Methodology

2001 ◽  
Vol 40 (18) ◽  
pp. 3082 ◽  
Author(s):  
Annmarie Eldering ◽  
Fredrick W. Irion ◽  
Albert Y. Chang ◽  
Michael R. Gunson ◽  
Franklin P. Mills ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
High Spectral Resolution ◽  
Vertical Profiles ◽  
Infrared Transmission ◽  
Transmission Measurements ◽  
Aerosol Volume

scholarly journals HDO measurements with MIPAS

2007 ◽  
Vol 7 (1) ◽  
pp. 931-970
Author(s):  
J. Steinwagner ◽  
M. Milz ◽  
T. von Clarmann ◽  
N. Glatthor ◽  
U. Grabowski ◽  
...  
Keyword(s):  
Spectral Resolution ◽  
Water Cycle ◽  
Total Error ◽  
High Spectral Resolution ◽  
Vertical Profiles ◽  
High Quality ◽  
Data Set ◽  
Random Part ◽  
Insight Into ◽  
Global Data

Abstract. We have used high spectral resolution spectroscopic measurements from the MIPAS instrument on the Envisat satellite to simultaneously retrieve vertical profiles of H2O and HDO in the stratosphere and uppermost troposphere. A thorough error analysis of the retrievals confirms that reliable δD data can be obtained up to an altitude of ~45 km. Averaging over multiple orbits and thus over longitudes further reduces the random part of the error. The absolute total error of averaged δD is between 36 ‰ and 111‰. With values lower than 42 ‰ the total random error is significantly smaller than the natural variability of δD. The data compare well with previous investigations. The MIPAS measurements now provide a unique global data set of high-quality δD data that will provide novel insight into the stratospheric water cycle.

High-spectral-resolution rayleigh-mie lidar measurement of vertical aerosol and atmospheric profiles

1992 ◽  
Vol 55 (2) ◽  
pp. 154-158 ◽  
Author(s):  
C. Y. She ◽  
R. J. Alvarez ◽  
L. M. Caldwell ◽  
D. A. Krueger
Keyword(s):  
Spectral Resolution ◽  
High Spectral Resolution ◽  
Lidar Measurement ◽  
Atmospheric Profiles ◽  
Mie Lidar

Multichannel Heterodyne Spectroradiometer for Atmospheric Greenhouse Gas Measurements

2021 ◽  
Author(s):  
Sergei Zenevich ◽  
Iskander Gazizov ◽  
Dmitry Churbanov ◽  
Maxim Spiridonov ◽  
Alexander Rodin
Keyword(s):  
Spectral Resolution ◽  
Near Infrared ◽  
Signal To Noise Ratio ◽  
Basic Research ◽  
High Spectral Resolution ◽  
Vertical Profiles ◽  
Atmospheric Measurements ◽  
Stratospheric Wind ◽  
Signal Evaluation ◽  
Channel Configuration

<p>We present a portable, multichannel laser heterodyne spectroradiometer (MLHS) with a spectral resolution of 0.0013 cm-1 for precision column measurements and vertical profiling of atmospheric greenhouse gases (GHG). Sample spectra of CO<sub>2</sub> and CH<sub>4</sub> absorption lines obtained by direct Sun observations have allowed us to measure GHG column abundance with a precision of 0.5% for CO<sub>2</sub> and 10% for CH<sub>4</sub>, as well as to retrieve their vertical profiles and to get a vertical profile of the stratospheric wind Rodin et al. (2020). The fundamentals and specifics of the multichannel configuration implementation of heterodyne receivers are presented in Zenevich et al. (2020). This work presents the first data of atmospheric CO<sub>2</sub> and CH<sub>4</sub> measurements, which were taken in a 4-channel configuration of the heterodyne receiver. Such configuration has allowed us to get atmospheric spectra with the SNR 300-500 within 2 minutes period of signal integration and keep the high spectral resolution. The results of retrieving CO<sub>2</sub> and CH<sub>4</sub> vertical concentration profiles and vertical profiles of the stratospheric wind are also presented.</p><p> </p><p><strong>Acknowledgments</strong></p><p>This work has been supported by the Russian Foundation for Basic Research grants # 19-29-06104  (A.V. Rodin, M. V. Spiridonov, I.Sh. Gazizov) and # 19-32-90276 (S. G. Zenevich).</p><p> </p><p><strong>References:</strong></p><p>Zenevich S. et al.: The improvement of dark signal evaluation and signal-to-noise ratio of multichannel receivers in NIR heterodyne spectroscopy application for simultaneous CO2 and CH4 atmospheric measurements, OSA Continuum, 3, 7, 1801-1810, doi:10.1364/OSAC.395094, 2020.</p><p>Rodin, A. et al.: Vertical wind profiling from the troposphere to the lower mesosphere based on high-resolution heterodyne near-infrared spectroradiometry, Atmos. Meas. Tech., 13, 2299–2308, doi:10.5194/amt-13-2299-2020, 2020.</p>

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