{"title":"Performance Calculations and Test of SCIAMACHY Detector Modules","authors":"A. Goede, R. Hoogeveen, R. van der A, J. de Vries","doi":"10.1364/orsa.1993.fa.2","DOIUrl":"https://doi.org/10.1364/orsa.1993.fa.2","url":null,"abstract":"SCIAMACHY (SCanning Imaging Absorption spectroMeter for Atmospheric CartograpHY) has been selected by ESA to fly on the first ENVISAT mission (1998). The Instrument Requirements originate from the Max Planck Institut für Chemie in Mainz under principal investigator J.P. Burrows /1/. The instrument comprises an imaging spectrometer operating in the wavelength range of 240-2385 nm, at a resolution of ~0.2 nm. Measurements will be performed in the nadir mode, in the limb mode and in the sun/moon occultation mode.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"78 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":"114846129","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}
J. Mergenthaler, J. Potter, J. Kumer, T. C. James, A. Roche
{"title":"Derivation of CLAES Filter Shapes","authors":"J. Mergenthaler, J. Potter, J. Kumer, T. C. James, A. Roche","doi":"10.1364/orsa.1993.the.11","DOIUrl":"https://doi.org/10.1364/orsa.1993.the.11","url":null,"abstract":"The Cryogenic Limb Array Etalon Spectrometer, CLAES, was launched on September 12, 1991 aboard the NASA Upper Atmosphere Research Satellite (UARS) and has been acquiring data on stratospheric composition since October 1, 1991. Overviews of the CLAES experiment and hardware are given by Roche et al (1) and Burriesci et al. (2). In the OSA Topical Meeting on Optical Remote Sensing of the Atmosphere in 1990 we presented three papers, (3,4,5) that described our progress up to that time in defining the system spectral transmission. In this paper, we describe refinements to CLAES characterization since then. These have come from further work with the pre-launch cold test data and from on-flight data. The spectral transmission characterization described here is currently being used in CLAES retrieval software. Figure (1) shows a schematic diagram of the spectrometer. In normal operation the CLAES instrument achieves a 0.2-0.65 cm-1 spectral resolution by passing the radiation through one of nine passband blocking filters (FWHM ~10 cm-1) mounted in a filter wheel, and one of four Fabry-Perot etalons which are mounted in a paddle wheel to provide for spectral scanning by tilting. The transmitted radiation then falls on a focal plane array consisting of a main array of 20 elements and an HCI array of 3 elements. The main detector array is used by eight spectral channels from 5.3 to 12.8 μm and takes atmospheric data in 20-2.5 km vertical increments. The 3-element HCL array is used only by the 3.5 μm channel where each detector spans approximately 16 km for S/N augmentation.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"10 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":"114852921","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}
R. Farley, J. Meriwether, R. McNutt, P. Dao, W. Moskowitz, G. Davidson, I. Mikkelsen, M. Larsen
{"title":"Raman/Rayleigh lidar measurements during a major stratwarm in Greenland","authors":"R. Farley, J. Meriwether, R. McNutt, P. Dao, W. Moskowitz, G. Davidson, I. Mikkelsen, M. Larsen","doi":"10.1364/orsa.1991.otua4","DOIUrl":"https://doi.org/10.1364/orsa.1991.otua4","url":null,"abstract":"Rayleigh lidar observations of atmospheric temperatures below 30 km are contaminated by the Mie backscattering from the sulphate stratospheric aerosols that normally exist between 12 and 25 km. Consequently, the fact that nitrogen Raman lidar returns for vibrational and rotational Raman backscattering are red-shifted offers the opportunity to extend the Rayleigh lidar measurements to lower altitudes by joining the two relative density profiles at a height where the Mie backscattering contamination may be ignored. This technique was applied by us previously with the aim of providing an improved means of normalizing lidar measurements of upper atmosphere densities against simultaneous balloon measurements. Because lower stratosphere temperatures below 195 °K will support the production of polar stratospheric clouds (PSC) designated as Type 2 nitric acid trihydrate (NAT) and for temperatures below the frost point, nominally 190 °K, the production of Type 1 water ice PSCs. To study the possible formation and evolution of these polar stratospheric clouds, we undertook to make measurements of temperatures in the winter Arctic with a Raman augmentation of our mobile Rayleigh lidar facility. While the results did not show any indications of the production of PSCs, the profiles did show substantial dynamic activity in connection with the progression of a major stratospheric warming.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"38 2 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":"124268078","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}
{"title":"A compact CO2-lidar system for the detection of atmospheric pollutants","authors":"T. Stuffler, H. W. Schrötter","doi":"10.1364/orsa.1995.tuc18","DOIUrl":"https://doi.org/10.1364/orsa.1995.tuc18","url":null,"abstract":"A mobile, tunable CO2-lidar system using the DAS-technique (Differential Absorption Spectroscopy) has been developed at the University of Munich. The system measures path integrated concentrations of atmospheric pollutants on a distance of up to 5 km. It represents a second generation of CO2-lidars at the Ludwig-Maximilians-University in Munich.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"16 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":"125612577","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}
{"title":"Development of an All-Solid-State Raman Laser for Ozone DIAL Measurements","authors":"C. L. McCray, T. Chyba","doi":"10.1364/orsa.1997.owc.14","DOIUrl":"https://doi.org/10.1364/orsa.1997.owc.14","url":null,"abstract":"In order to measure atmospheric ozone with the DIAL technique, the laser transmitter must generate suitable on-line and off-line wavelength pulse pairs. Preliminary experiments1 at NASA LaRC suggested that the solid state Raman shifting material, Ba(NO3)2, could be utilized to produce these pulse pairs. A Raman oscillator pumped at 532 nm by a frequency-doubled Nd:YAG laser can create first Stokes laser output at 563 nm and second Stokes output at 599 nm. With a frequency doubler, UV output at 281 nm and 299 nm can be subsequently obtained. This all-solid state system can be very compact and has the potential to be very efficient and reliable. Such attributes are essential for the next generation of airborne or space-borne lidar systems.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"48 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":"125720161","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}
F. Murcray, D. Murcray, S. David, R. Blatherwick, J. Kosters, F. Murcray, A. Goldman, C. Rinsland
{"title":"NDSC Infrared Observations at Mauna Loa, Hawaii","authors":"F. Murcray, D. Murcray, S. David, R. Blatherwick, J. Kosters, F. Murcray, A. Goldman, C. Rinsland","doi":"10.1364/orsa.1993.thc.4","DOIUrl":"https://doi.org/10.1364/orsa.1993.thc.4","url":null,"abstract":"Since May 1991, the University of Denver is involved in high resolution infrared atmospheric measurements at Mauna Loa, Hawaii, one of the Network for Detection of Stratospheric Change (NDSC) primary sites, using a BOMEM DA3.002 interferometer. Additional measurements for monitoring and intercomparisons are made at Denver, with a BRUKER IFS HR and BOMEM DA3.002 interferometers. More recently, the involvement has been extended to several complementary NDSC sites.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"65 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":"125747598","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}
{"title":"A Combined Lidar, Long-path Extinction and In-situ Aerosol Experiment in Southern Ontario","authors":"R. Hoff","doi":"10.1364/orsa.1993.tub.1","DOIUrl":"https://doi.org/10.1364/orsa.1993.tub.1","url":null,"abstract":"During August, 1992, a number of colocated optical and chemical experiments were performed at the Center for Atmospheric Research Experiments at Egbert (north of Toronto), Ontario, Canada. These experiments were symbiotic in that they were designed to address a number of atmospheric research problems of interest to Canada, including the need to determine: (1) the deposition velocity of polynuclear aromatic hydrocarbons and trace metals, (2) the size distribution and hygroscopic behaviour of particles affecting eastern Canadian visibility, (3)the evolution of nitrogen chemistry at nighttime, (4) the formation of particulate nitrate from gaseous precursors, and (5) the need to understand the photochemical particle production processes in early morning sunrise events. This work involved AES scientists as well as scientists from Germany visiting Canada under a bilateral exchange program. This paper will present the initial results from these experiments.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","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":"122278352","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}
{"title":"Trace Gas Remote Sounding with the High Resolution Dynamics Limb Sounder (HERDLS)","authors":"J. Gille","doi":"10.1364/orsa.1997.otha.1","DOIUrl":"https://doi.org/10.1364/orsa.1997.otha.1","url":null,"abstract":"HIRDLS is a 21-channel infrared limb scanning radiometer for determining the distributions of 10 trace species from the upper troposphere to the mesosphere.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"45 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":"115900289","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}
{"title":"Microwave observations of precipitable water","authors":"S. Tjemkes, G. Stephens","doi":"10.1364/orsa.1990.wd10","DOIUrl":"https://doi.org/10.1364/orsa.1990.wd10","url":null,"abstract":"Global warming is a contemporary topic of great scientific and social interest. Current models predict a temperature increase as large as 4 K when the atmospheric concentration of carbon dioxide is doubled. The coupling of the hydrological cycle with the initial forcing by carbon dioxide appears to be crucial in these calculations. At present however, it is not evident that the hydrological cycle is correctly modeled. And a comparison of the various components of this cycle with observations is needed. In this presentation observations are presented which could be used to validate the water vapor distributions computed by general circulation models. A method for retrieving precipitable water from observations by the Special Sensor Microwave/Imager (SSM/I) over the global oceans is described. Preliminary results of the retrieved precipitable water and near surface wind velocities for September 1987 are described","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"279 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131958699","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}
{"title":"Recent Profiles of Atmospheric Backscatter","authors":"M. Post, A. Weickmann, G. Mcnice","doi":"10.1364/orsa.1990.tud11","DOIUrl":"https://doi.org/10.1364/orsa.1990.tud11","url":null,"abstract":"The prevalence of atmospheric aerosols on a global basis has recently become a topic of great importance for climatologists and for researchers attempting to establish the feasibility of satellite-based measuring systems that use aerosols as tracers, as well as for those attempting to explain the interfering effects of aerosols on their measurements. In 1981 we began acquiring a large set of backscatter profiles with our 10.6 μm wavelength pulsed, coherent lidar near Boulder, Colorado. By 1984 more than 600 profiles were archived and analyzed, and several papers1-2 summarized the findings. Between 1985 and 1988 a void occurred in our data taking because we upgraded the transceiver from a lower powered hybrid design3 to a higher powered injection-seeded design4, and because of a change in our program objectives. Fortunately during this period the Jet Propulsion Laboratory began taking similar data5. In 1987 we renewed our systematic observations at the behest of NASA for its Laser Atmospheric Wind System (LAWS) studies6, and in the fall of 1988 we traveled to the Mauna Loa volcano in Hawaii to study the clean Pacific troposphere, in conjunction with the Global Backscatter Experiment (GLOBE7) program. Concurrently, our group operated a pulsed ruby lidar8 to acquire biweekly profiles of backscatter in the troposphere and stratosphere over Boulder. Recently we coordinated data taking between the two lidar systems, and we combined our observations on one occasion with observations from the University of Wyoming’s balloon backscatter instrument9.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"39 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":"132352921","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}