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Pressure Induced Broadening of 35C10 and 16O2 Millimeter-Wavelength Rotational Transitions By N2 压力诱导35C10和16O2毫米波长旋转跃迁的N2展宽
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.wp10
D. Brinza, H. Pickett, E. Cohen
{"title":"Pressure Induced Broadening of 35C10 and 16O2 Millimeter-Wavelength Rotational Transitions By N2","authors":"D. Brinza, H. Pickett, E. Cohen","doi":"10.1364/sam.1980.wp10","DOIUrl":"https://doi.org/10.1364/sam.1980.wp10","url":null,"abstract":"The importance of C10 as a catalytic species in stratospheric ozone depletion is of current interest. A product of the fast reaction of atomic chlorine and ozone, C10 distribution in the upper atmosphere has been modeled by Logan et al. [1]. Measurement of volume mixing ratios of stratospheric C10 is now performed by means of aircraft-based microwave emission spectrometers. The profiles obtained by analysis of the J=9/2-7/2, J = 13/2-11/2 and J = 15/2-13/2 transitions at 167 GHz, 241 GHz, and 278 GHz respectively are sensitive to the value of the pressure broadening parameter γ used in the collisional line shape function. Waters et al. [2] estimated γ = 3.8 MHz/mbar for C10 (μ = 1.24D) by linear interpolation of values for HF (γ = 4.5 MHz/mbar, μ = 1.8D) and CO (γ = 2.4 MHz/mbar, μ = 0.11D). This summary describes the determination of γ for C10 between 207K and 370K by N2 line broadening of the J=9/2-11/2 and J=13/2-15/2 transitions of v = 0 2Π3/2 35C10.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127201043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Trace Methane Absorption Measurements Using a DF Laser Intracavity Spectrophone 用DF激光腔内声谱仪测量痕量甲烷吸收
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.wp7
D. H. Leslie, G. Trusty
{"title":"Trace Methane Absorption Measurements Using a DF Laser Intracavity Spectrophone","authors":"D. H. Leslie, G. Trusty","doi":"10.1364/sam.1980.wp7","DOIUrl":"https://doi.org/10.1364/sam.1980.wp7","url":null,"abstract":"The deuterium-flouride (DF) laser emits in the 3.5 to 4.0 μm atmospheric transmission window. Atmospheric absorbers in the window include isotopic water (HDO), N2O, CH4, and small contributions from both line and continuum H2O absorption. The purpose of our study was to measure trace methane absorption at DF laser frequencies, to compare our results with our predictions using the AFGL line parameters compilation, and to develop sensitive spectrophone measurement techniques.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127260574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Satellite IR Radiance Deficits and Transmittances 卫星红外辐射差和透射率
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.wp1
A. Neuendorffer
{"title":"Satellite IR Radiance Deficits and Transmittances","authors":"A. Neuendorffer","doi":"10.1364/sam.1980.wp1","DOIUrl":"https://doi.org/10.1364/sam.1980.wp1","url":null,"abstract":"The TIROS High Resolution Sounder1 (HIRS), like previous atmospheric sounders, relys heavily upon CO2 v2 15 micron R branch (675–715 cm−1) absorption and adjacent CO2 (v1 – v2) \"hot\" band absorption (at 721 cm−1 and 742 cm−1) for tire purpose of obtaining atmospheric temperature retrievals.2 Although this region is somewhat complicated by a weak 710 cm−1 ozone band, it is near the Planck function peak and (unlike the P branch) is relatively unaffected by water and CO2 heavy isotope absorption.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122193316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Very High Sensitivity Spectroscopy using Tunable Diode Lasers 使用可调谐二极管激光器的非常高灵敏度光谱学
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.tup1
J. Reid, B. Garside
{"title":"Very High Sensitivity Spectroscopy using Tunable Diode Lasers","authors":"J. Reid, B. Garside","doi":"10.1364/sam.1980.tup1","DOIUrl":"https://doi.org/10.1364/sam.1980.tup1","url":null,"abstract":"In recent years, tunable diode lasers have become widely used in the study of laboratory infrared spectra. The high resolution provided by the diode lasers is employed to obtain accurate line positions, and to a lesser extent lineshapes and linestrengths. While this type of research is now undertaken in many laboratories, few researchers are currently exploiting the potential of the diode lasers to provide very high sensitivity measurements in the infrared. In this paper, we describe diode modulation techniques which enable one to detect absorption coefficients as small as 10-9 cm-1. This sensitivity, combined with the tunability and resolution of the diode laser, allow one to perform a wide range of experiments relevant to atmospheric spectroscopy. In the laboratory one can detect very weak absorption lines in stable molecules [1], or investigate the spectra of unstable molecules such as free radicals [2]. The instrumentation is port able, and we have used it to make in situ field measurements on a wide range of gases and pollutants in an urban atmosphere [3]. Similar instruments have been flown in aircraft to monitor tropospheric CO concentrations, and balloon flights are planned to simultaneously determine stratospheric NO2 and NO concentrations [4].","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"509 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116699723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent Atmospheric Ozone Measurements Related to New Infrared Spectral Data 与新的红外光谱数据有关的最近大气臭氧测量
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.tup22
A. Girard, A. Bouchardy, J. Flaud, C. Camy‐Peyret, C. Secroun, A. Barbe, P. Jouve
{"title":"Recent Atmospheric Ozone Measurements Related to New Infrared Spectral Data","authors":"A. Girard, A. Bouchardy, J. Flaud, C. Camy‐Peyret, C. Secroun, A. Barbe, P. Jouve","doi":"10.1364/sam.1980.tup22","DOIUrl":"https://doi.org/10.1364/sam.1980.tup22","url":null,"abstract":"IntercomParison of ozone measurements obtained by independent absolute calibration techniques is a major concern for a synoptic ozone survey network.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134276779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Infrared Laser Atmospheric Transmission Data Base† 红外激光大气传输数据库分析&
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.wp3
J. A. Dowling
{"title":"Analysis of Infrared Laser Atmospheric Transmission Data Base†","authors":"J. A. Dowling","doi":"10.1364/sam.1980.wp3","DOIUrl":"https://doi.org/10.1364/sam.1980.wp3","url":null,"abstract":"An extensive data base comprised of atmospheric transmission and associated meteorological measurements has been collected by NRL during the past five years. Long-path extinction measurements at discreet laser frequencies have been supplemented by high resolution FTS data in several recent experiments. The most comprehensive experiment of this nature was performed in 1977 at the Cape Canaveral Air Force Station (CCAFS), Florida using a 5.08 kilometer overwater path. A compendium1 of data from this experiment has been published but until recently only limited analyses2,3 of these data have been performed. The present paper contains comparisons of both line4 and continuum5-7 molecular absorption models with the 1977 CCAFS measurements together with additional information obtained during more recent work.8-10","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121280477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Resolution of the O3/H2O Interference Problem in Detecting Natural Tropospheric OH Via Laser Induced Fluorescence 激光诱导荧光探测天然对流层OH中O3/H2O干扰问题的解决
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.tup18
D. Davis, M. Rodgers, S. Fischer, K. Asai
{"title":"Resolution of the O3/H2O Interference Problem in Detecting Natural Tropospheric OH Via Laser Induced Fluorescence","authors":"D. Davis, M. Rodgers, S. Fischer, K. Asai","doi":"10.1364/sam.1980.tup18","DOIUrl":"https://doi.org/10.1364/sam.1980.tup18","url":null,"abstract":"The OH free radical has now been shown to be of pivotal importance to our understanding of tropospheric photochemistry. The laser induced fluorescence (LIF) technique has been shown to be a highly sensitive method for measuring atmospheric OH in the parts-per-quadrillion to parts-per-trillion concentration range. The high sensitivity of the LIF method, however, can be compromised by the presence of an OH interference signal resulting from the laser photolysis of in-situ O3, i.e.: followed by the very fast reaction (2), Reaction (2), in turn, is in competition with the very efficient quenching process (3).","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129255510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantitative Fluorescence Spectroscopy of NO2: Is NO2 Fluorescence Lidar a Viable Stratospheric Measurement Technique? 二氧化氮的定量荧光光谱:二氧化氮荧光激光雷达是一种可行的平流层测量技术吗?
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.wp22
T. Mcgee, T. Mcilrath, C. Dulcey
{"title":"Quantitative Fluorescence Spectroscopy of NO2: Is NO2 Fluorescence Lidar a Viable Stratospheric Measurement Technique?","authors":"T. Mcgee, T. Mcilrath, C. Dulcey","doi":"10.1364/sam.1980.wp22","DOIUrl":"https://doi.org/10.1364/sam.1980.wp22","url":null,"abstract":"A stratospheric measurement of the NO2/NO ratio is important to our understanding of the photochemistry of the upper atmosphere. Lidar as a technique for making such measurements is particularly attractive for a number of reasons. In the case of balloon-borne experiments, data are taken some distance away from the contamination cloud of the balloon itself; altitude and horizontal profiles can be obtained; and since it is an active measurement and therefore not dependent on solar flux, nighttime measurements are also possible. Our laboratory has studied the quantitative fluorescence properties of NO2 at several wavelengths and these data as well as the lidar simulations arising out of them will be presented.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126670612","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Application of Spectroscopic Data To The Interpretation of Stratospheric Spectra 光谱资料在平流层光谱解释中的应用
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.tup19
W. Mankin, M. Coffey, A. Goldman
{"title":"Application of Spectroscopic Data To The Interpretation of Stratospheric Spectra","authors":"W. Mankin, M. Coffey, A. Goldman","doi":"10.1364/sam.1980.tup19","DOIUrl":"https://doi.org/10.1364/sam.1980.tup19","url":null,"abstract":"Infrared spectroscopy is one of the most powerful diagnostic methods for the study of atmospheric composition. One of its useful attributes is the ability to remotely sense portions of the atmosphere far from the instrument. This attribute is particularly useful when measuring strato-stratospheric trace gases as a function of latitude, since at many atitudes, especially in the tropics, there are no convenient balloon launch locations for in situ measurements.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129822026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Troposphere: Trace Gas Photochemistry and the Impact of Pollution 对流层:微量气体光化学和污染的影响
Topical Meeting on Spectroscopy in Support of Atmospheric Measurements Pub Date : 1900-01-01 DOI: 10.1364/sam.1980.ma3
W. Chameides
{"title":"Troposphere: Trace Gas Photochemistry and the Impact of Pollution","authors":"W. Chameides","doi":"10.1364/sam.1980.ma3","DOIUrl":"https://doi.org/10.1364/sam.1980.ma3","url":null,"abstract":"Over the past decade great strides have been made in our understanding of the trace gas composition of the troposphere and the physical, chemical, and biological processes that control this composition. It is now recognized that the production of free radical species in the presence of solar radiation leads to a complicated series of reactions. These reactions tend to oxidize reduced species released at the earth's surface, transforming them into soluble forms which can be removed in rain and other precipitation. Thus, tropospheric photochemistry represents the atmospheric link in the biogeochemical cycling of the elements and in so doing may influence important environmental parameters such as surface temperature, the acidity of rainfall, the column abundance of stratospheric ozone, and the concentration of potentially toxic gases.","PeriodicalId":199214,"journal":{"name":"Topical Meeting on Spectroscopy in Support of Atmospheric Measurements","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132855104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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