Optical Remote Sensing of the Atmosphere最新文献_第10页

Implications of Aerosol Phenomenology on Sensor and Algorithm Design 气溶胶现象学对传感器和算法设计的影响

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1993.thb.6

Steven D. Westerman

引用次数: 0

Pinatubo Cloud Over Garmisch-Partenkirchen

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1991.otue18

H. Jäger

引用次数: 0

Recent Developments and Field Tests of the NASA Langley Research Center Airborne Water Vapor DIAL System 美国宇航局兰利研究中心机载水汽刻度盘系统的最新发展和现场测试

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1995.tuc27

N. S. Higdon, T. Chyba, P. Ponsardin, R. Deyoung, E. Browell

引用次数: 1

The U.S. EPA airborne UV-DIAL system 美国环保局机载UV-DIAL系统

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1991.owe11

H. Moosmüller, D. Diebel, D. H. Bundy, M. Bristow, C. Edmonds, R. M. Turner, V. Kovalev, R. P. Haas, J. Mcelroy

引用次数: 2

N2O Vertical Profiles Retrieved from Ground-based Solar Absorption Spectra Taken at McMurdo Station During Austral Spring of 1989 1989年南方春季麦克默多站地面太阳吸收光谱反演的N2O垂直剖面

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1995.tuc5

X. Liu, F. Murcray

{"title":"N2O Vertical Profiles Retrieved from Ground-based Solar Absorption Spectra Taken at McMurdo Station During Austral Spring of 1989","authors":"X. Liu, F. Murcray","doi":"10.1364/orsa.1995.tuc5","DOIUrl":"https://doi.org/10.1364/orsa.1995.tuc5","url":null,"abstract":"N2O can be a tracer of atmospheric air motion due to its long life time. Ground-based FTIR solar spectra contain information on the vertical distributions of N2O due to pressure-broadening of absorption lines. We have combined the Chahine-Twomey' relaxation method with a line-by-line layer-by-layer radiative transfer code to retrieve N2O VMR profiles from ground-based solar absorption spectra. The spectra were taken at McMurdo station during the austral spring of 1989 with a 0.02 wavenumber resolution FTIR spectrometer. Since N2O is released from troposphere and is photolyzed in the stratosphere, the line shape of its absorption is mainly due Lorentz broadening. The 0.02 wavenumber resolution is high enough for us to retrieve N2O VMR profiles up to 25 kilometers. Figure 1 shows a typical observed N2O solar spectrum near 1993.15 wavenumber (solid line) and a calculated spectrum using our profile retrieval program. The best fit is obtained by iteratively adjusting N2O VMR profile according to the formulation of Chahine and Twomey. A contour plot of N2O VMR versus altitude and julian day number is shown in Figure 2. The lower tropospheric N2O VMRs have an average value around 310 ppb. Correlations of the N2O contour with that of temperature shows interesting features of tropospheric and lower stratospheric air motions. We have also compared the total N2O column amounts retrieved from this profile retrieval method and from the PC version of the non-linear least square spectral fitting algorithm (SFIT). The temporal variations of the N2O total column amounts retrieved from two methods show excellent correlation.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"31 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":"133168949","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: 1

The Development of New Techniques For Remote Measurements of Atmospheric Gases 大气气体远程测量新技术的发展

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1990.tud6

P. Woods, B. W. Jolliffe, M. Milton, T. J. Mcllveen, N. Swann, D. Stuart

引用次数: 0

Comparison of Re-calibrated TOMS Total Ozone Data with Dobson Network 重新校准的TOMS总臭氧数据与Dobson网络的比较

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1990.wa8

C. Wellemeyer, Ramdas R. Singh, R. Mcpeters, R. Hudson

引用次数: 0

Barium Ion Lidar: Analysis of a lidar system for measuring temperatures in the middle thermosphere (200-500 km) 钡离子激光雷达:测量中层热层(200-500公里)温度的激光雷达系统分析

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1995.tuc25

R. Collins, H. Stenbaek-Nielsen

引用次数: 0

Absolute Frequency Wind Measurements for Doppler-Rayleigh Lidar 多普勒-瑞利激光雷达绝对频率风测量

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1995.tua2

J. Friedman, P. Castleberg, Jyn Cho, C. Tepley, M. Kelley

{"title":"Absolute Frequency Wind Measurements for Doppler-Rayleigh Lidar","authors":"J. Friedman, P. Castleberg, Jyn Cho, C. Tepley, M. Kelley","doi":"10.1364/orsa.1995.tua2","DOIUrl":"https://doi.org/10.1364/orsa.1995.tua2","url":null,"abstract":"The Doppler-Rayleigh lidar at Arecibo Observatory has been in operation since May 1990 obtaining wind data in the region of the atmosphere between 10 and 60 km altitude where it is difficult to measure atmospheric properties by balloons, satellites, or radars. An injection-seeded Nd:YAG laser coupled with a Fabry-Perot etalon receiver are capable of giving a frequency resolution of about 20 MHz. The etalon is pressure tuned in discrete steps about the center frequency of the transmitter. To get the horizontal component of the wind vector, the laser is pointed 30° off the zenith to the north or south and to the east or west. A zero wind marker for reference is obtained by pointing the lidar vertically. It is assumed that vertical winds are substantially smaller than horizontal and not measurable by the lidar. Long term drifts in the center frequency caused by both drift in the seed laser and in the etalon receiver are compensated for by taking out the drift of the fringes measured in the vertical direction. This uncertainty in frequency drift of the system and the need to depend on the assumption of zero vertical wind velocities are weaknesses in the measurements, and they render the uncertainty of Doppler shift measurements to be much greater than 20 MHz.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"79 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":"115527076","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

Atmospheric Remote Sensing with the Eos Multi-angle Imaging SpectroRadiometer 利用Eos多角度成像光谱辐射计进行大气遥感

Optical Remote Sensing of the Atmosphere Pub Date : 1900-01-01 DOI: 10.1364/orsa.1990.md5

D. Diner

{"title":"Atmospheric Remote Sensing with the Eos Multi-angle Imaging SpectroRadiometer","authors":"D. Diner","doi":"10.1364/orsa.1990.md5","DOIUrl":"https://doi.org/10.1364/orsa.1990.md5","url":null,"abstract":"The Multi-angle Imaging SpectroRadiometer (MISR) experiment is an Instrument Investigation selected for flight aboard the first NASA Earth Observing System polar platform, Eos-A. The purpose of the MISR investigation is to study the effects of geophysical processes and human activities on the Earth’s ecology and climate. Scientific objectives include study of the climatic and environmental impacts of atmospheric aerosols, characterization of heterogeneous cloud fields and their impact on the shortwave radiation budget, and investigation of biosphere-atmosphere interactions and ecosystem change. A detailed understanding of the causes and effects of regional and global change will require long-term monitoring of the Earth system. MISR is a unique component of the Eos instrument suite in that it will systematically acquire multispectral images of the angular reflectance signatures of terrestrial scenes. Theoretical simulations, ground-based measurements, and remotely-sensed observations of aerosol-laden atmospheres, cloud fields, and vegetated landscapes demonstrate the necessity of multi-angle data for climatological and biogeophysical studies. While the spectral coverage and resolution of nadir-viewing imaging spectrometers provide invaluable information on chemical composition, the angular variation of reflectance furnishes the means of inferring physical quantities related to geometric and optical structure, radiative energy transfer, and biosphere-atmosphere mass exchange.","PeriodicalId":320202,"journal":{"name":"Optical Remote Sensing of the Atmosphere","volume":"12 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":"115539002","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