Pressure Measurements Using an Airborne Differential Absorption Lidar. Part 1; Analysis of the Systematic Error Sources

Pressure Measurements Using an Airborne Differential Absorption Lidar. Part 1; Analysis of the Systematic Error Sources PDF Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723875502
Category : Science
Languages : en
Pages : 52

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Book Description
Remote airborne measurements of the vertical and horizontal structure of the atmospheric pressure field in the lower troposphere are made with an oxygen differential absorption lidar (DIAL). A detailed analysis of this measurement technique is provided which includes corrections for imprecise knowledge of the detector background level, the oxygen absorption fine parameters, and variations in the laser output energy. In addition, we analyze other possible sources of systematic errors including spectral effects related to aerosol and molecular scattering interference by rotational Raman scattering and interference by isotopic oxygen fines.Flamant, Cyrille N. and Schwemmer, Geary K. and Korb, C. Laurence and Evans, Keith D. and Palm, Stephen P.Goddard Space Flight CenterREMOTE SENSING; ATMOSPHERIC PRESSURE; PRESSURE MEASUREMENT; VERTICAL DISTRIBUTION; DIFFERENTIAL ABSORPTION LIDAR; RAMAN SPECTRA; AEROSOLS; TROPOSPHERE; SYSTEMATIC ERRORS; OPTICAL RADAR

Pressure Measurements Using an Airborne Differential Absorption Lidar. Part 1; Analysis of the Systematic Error Sources

Pressure Measurements Using an Airborne Differential Absorption Lidar. Part 1; Analysis of the Systematic Error Sources PDF Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781723875502
Category : Science
Languages : en
Pages : 52

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Book Description
Remote airborne measurements of the vertical and horizontal structure of the atmospheric pressure field in the lower troposphere are made with an oxygen differential absorption lidar (DIAL). A detailed analysis of this measurement technique is provided which includes corrections for imprecise knowledge of the detector background level, the oxygen absorption fine parameters, and variations in the laser output energy. In addition, we analyze other possible sources of systematic errors including spectral effects related to aerosol and molecular scattering interference by rotational Raman scattering and interference by isotopic oxygen fines.Flamant, Cyrille N. and Schwemmer, Geary K. and Korb, C. Laurence and Evans, Keith D. and Palm, Stephen P.Goddard Space Flight CenterREMOTE SENSING; ATMOSPHERIC PRESSURE; PRESSURE MEASUREMENT; VERTICAL DISTRIBUTION; DIFFERENTIAL ABSORPTION LIDAR; RAMAN SPECTRA; AEROSOLS; TROPOSPHERE; SYSTEMATIC ERRORS; OPTICAL RADAR

Differential Absorption Lidars for Remote Sensing of Atmospheric Pressure and Temperature Profiles

Differential Absorption Lidars for Remote Sensing of Atmospheric Pressure and Temperature Profiles PDF Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723559754
Category :
Languages : en
Pages : 260

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Book Description
A near infrared differential absorption lidar technique is developed using atmospheric oxygen as a tracer for high resolution vertical profiles of pressure and temperature with high accuracy. Solid-state tunable lasers and high-resolution spectrum analyzers are developed to carry out ground-based and airborne measurement demonstrations and results of the measurements presented. Numerical error analysis of high-altitude airborne and spaceborne experiments is carried out, and system concepts developed for their implementation. Korb, C. Laurence and Schwemmer, Geary K. and Famiglietti, Joseph and Walden, Harvey and Prasad, Coorg Goddard Space Flight Center NASA-TM-104618, NAS 1.15:104618, REPT-95B00061, NIPS-96-08347 RTOP 460-28-40...

Differential Absorption Lidars for Remote Sensing of Atmospheric Pressure and Temperature Profiles

Differential Absorption Lidars for Remote Sensing of Atmospheric Pressure and Temperature Profiles PDF Author:
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 262

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Laser Radar II

Laser Radar II PDF Author: Robert C. Harney
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 208

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Tropospheric Ozone

Tropospheric Ozone PDF Author: Ivar S.A. Isaksen
Publisher: Springer Science & Business Media
ISBN: 9400929137
Category : Science
Languages : en
Pages : 433

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Book Description
The main objective of the workshop was to increase our knowledge of ozone formation and distribution in the troposphere, its relation to precursor (NO~ and HC species) distribution, how it is affected by transport processes in the troposphere, and to show how the increasing levels of ozone can cause environmental problem. The focus was on the interaction of ozone on regional and global scales. There is mounting evidence that such interactions occur and that the ozone levels are increasing in most of the Northern Hemisphere tropo sphere. A likely source of ozone increase is human activity. As result of this, tropospheric climate may change significantly within a few decades, either through direct effects by ozone itself or indirectly through its effect on other radiatively active trace species. Further more, ozone may have adverse effects on vegetation over large continental areas due to enhanced levels which have been measured to take place. As it is well known that ozone plays a key role in the oxidation of a large number of chemical species in the troposphere, natural as well as man-made, the atmospheric distribution of important trace species like sulfur dioxide, nitrogen oxides and hydrocarbons could be markedly changed as a result of ozone changes. The rapidly increasing interest in tropospheric ozone, and the key role ozone plays in several atmospheric areas as well the obvious increase in the tropospheric concentration of ozone made ozone a natural choice as a topic for the workshop.

Electrical & Electronics Abstracts

Electrical & Electronics Abstracts PDF Author:
Publisher:
ISBN:
Category : Electrical engineering
Languages : en
Pages : 1904

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Physics Briefs

Physics Briefs PDF Author:
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 704

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Error Analysis of Airborne LiDAR Retro-Reflection Measurements

Error Analysis of Airborne LiDAR Retro-Reflection Measurements PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31

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Book Description
LiDAR data was collected by the Airborne 1 Corporation for the Naval Research Laboratory over a ground set-up that included nine retro-reflective panels. The results of the LiDAR experiment are very promising, demonstrating the ability to discriminate the retro-reflective panels from the grassy background. Interestingly, although a high-discrimination capability was demonstrated, the LiDAR data also exhibited strong signal fluctuations. We investigate the error contributors and their potential effects on measured LiDAR signal levels through an analysis of the system noise, atmospheric properties, and analysis of potential sampling variances, related to system and test parameters of the data collect. The analysis techniques explored with this NRL LiDAR data set aid in planning of future tests and further development of the actively-illuminated taggant concepts.

Meteorological and Geoastrophysical Abstracts

Meteorological and Geoastrophysical Abstracts PDF Author:
Publisher:
ISBN:
Category : Atmospheric chemistry
Languages : en
Pages : 964

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Covering the world's literature on meteorology, climatology, atmospheric chemistry and physics, physical oceanography, hydrology, glaciology, and related environmental sciences.

Airborne differential absorption lidar for water vapour measurements in the upper troposphere and lower startosphere in the spectral region around 940 nm

Airborne differential absorption lidar for water vapour measurements in the upper troposphere and lower startosphere in the spectral region around 940 nm PDF Author: Gorazd Poberaj
Publisher:
ISBN:
Category :
Languages : en
Pages : 122

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