LINE BROADENING AND TEMPERATURE DEPENDENCE IN THE 0➝3 OVERTONE BAND OF CARBON MONOXIDE

1999 ◽  
Author(s):  
Cyril Hnatovsky ◽  
Adriana Predoi-Cross ◽  
Kimberly Strong ◽  
James R. Drummond
Keyword(s):  
Carbon Monoxide ◽  
Temperature Dependence ◽  
Line Broadening ◽  
Overtone Band

Foreign Gas Broadening Studies of the J' ←J = 1← 0 Rotational Line of CO by Frequency and Time Domain Techniques

1999 ◽  
Vol 54 (3-4) ◽  
pp. 218-224 ◽  
Author(s):  
N. Nissen ◽  
J. Doose ◽  
A. Guarnieri ◽  
H. Mäder ◽  
V. N. Markov ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Temperature Dependence ◽  
Frequency Domain ◽  
Time Domain ◽  
Room Temperature ◽  
Experimental Techniques ◽  
Rotational Line ◽  
Collisional Broadening ◽  
Good Agreement

The collisional broadening of the J '← J = 1 ← 0 rotational line of carbon monoxide by the buffer gases He, Ne, Ar, Kr, CO, N2, O2 , and air has been studied at room temperature. Two different experimental techniques in time- and frequency-domain, respectively, were used. The obtained data are in good agreement. Time-domain investigations on the temperature dependence of the foreign gas broadening parameters are also presented.

Absorption intensity measurements of the first overtone band of CO

1981 ◽  
Vol 59 (10) ◽  
pp. 1367-1372 ◽  
Author(s):  
G. Chandraiah ◽  
G. R. Hébert
Keyword(s):  
Carbon Monoxide ◽  
Line Intensity ◽  
Absolute Intensity ◽  
Intensity Data ◽  
Pressure Broadening ◽  
Absorption Intensity ◽  
Overtone Band ◽  
Intensity Measurements ◽  
Best Value ◽  
Measured Line

The absolute intensity A2–0 of the 2–0 band of carbon monoxide has been measured with helium and argon as pressure broadening gases at pressures up to 600 amagat. A separate band intensity value has been derived from the measurements of several P-branch line intensity data and the Herman–Wallis formula. The best value obtained is A2–0 = (2.11 ± 0.08) cm−2 amagat−1. The square of the rotationless matrix element, [Formula: see text] has been found to be (4.39 ± 0.02)10−5 D2, as estimated from the measured line intensity values.

Line Broadening and Shifting Studies of the J=5←4 Transition of Carbon Monoxide Perturbed by CO, N2, and O2

2002 ◽  
Vol 212 (1) ◽  
pp. 1-5 ◽  
Author(s):  
V.N. Markov ◽  
G.Yu. Golubiatnikov ◽  
V.A. Savin ◽  
D.A. Sergeev ◽  
A. Guarnieri ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Line Broadening

Temperature dependence of the reduction potential in CuA in carbon monoxide-inhibited cytochrome c oxidase

Biochemistry ◽  
1986 ◽  
Vol 25 (1) ◽  
pp. 167-171 ◽  
Author(s):  
Hsin Wang ◽  
David F. Blair ◽  
Walther R. Ellis ◽  
Harry B. Gray ◽  
Sunney I. Chan
Keyword(s):  
Carbon Monoxide ◽  
Cytochrome C ◽  
Temperature Dependence ◽  
Cytochrome C Oxidase ◽  
Reduction Potential

scholarly journals Recovery and validation of Odin/SMR long term measurements ofmesospheric carbon monoxide

2020 ◽  
Author(s):  
Francesco Grieco ◽  
Kristell Pérot ◽  
Donal Murtagh ◽  
Patrick Eriksson ◽  
Peter Forkman ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Middle Atmosphere ◽  
Phase Lock Loop ◽  
Polar Regions ◽  
Line Broadening ◽  
Mixing Ratios ◽  
Correct Location ◽  
Relative Differences ◽  
Co Observations

Abstract. The Sub-Millimetre Radiometer (SMR) on board the Odin satellite performs limb sounding measurements of the middle atmosphere to detect molecular emission from different species. Carbon monoxide (CO) is an important tracer of atmospheric dynamics at these altitudes, due to its long photochemical lifetime and high vertical concentration gradient. In this study, we have successfully recovered over 18 years of SMR observations, providing the only dataset to date being so extended in time and stretching out to the polar regions, with regards to satellite-measured mesospheric CO. This new dataset is part of the Odin/SMR version 3.0 level 2 data. The much of the level 1 dataset – except the October 2003 to October 2004 period – was affected by a malfunctioning of the Phase-Lock Loop (PLL) in the frontend used for CO observations. Because of this technical issue, the CO line could be shifted away from its normal frequency location causing the retrieval to fail or leading to an incorrect estimation of the CO concentration. An algorithm was developed to locate the CO line and shift it to its correct location. Nevertheless, another artifact causing an underestimation of the concentration, i.e. a line broadening, stemmed from the PLL malfunctioning. This was accounted for by using a broader response function. The application of these corrections resulted in the recovery of a large amount of data that was previously being flagged as problematic and therefore not processed. A validation study has been carried out, showing how SMR CO volume mixing ratios are in general in good accordance with the other instruments considered in the study. Overall, the agreement is very good between 60 and 80 km altitude, with relative differences close to zero. A positive bias at low altitudes (50–60 km) up to +20 % and a negative bias up to −20 % at high altitudes (80–100 km) were found with respect to the compared instruments.

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