Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Geary K. Schwemmer"'
Publikováno v:
Optics and Lasers in Engineering. 44:881-902
We have developed and investigated the use of holographic optical elements (HOEs) and holographic transmission gratings for scanning lidar telescopes. For example, rotating a flat HOE in its own plane with the focal spot on the rotation axis makes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71aa516c1448a3e82d187a70d6d46c42
https://doi.org/10.1016/j.optlaseng.2005.06.011
https://doi.org/10.1016/j.optlaseng.2005.06.011
Autor:
Demetrius Venable, Geary K. Schwemmer, P. Di Girolamo, David N. Whiteman, B. Mielke, J. Comer, Igor Veselovskii, S. H. Melfi, T. Van Hove, Kurt Rush, Bruce M. Gentry, Belay Demoz, Keith Evans, M. Cadirola, Zhien Wang
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 23:157-169
The NASA Goddard Space Flight Center (GSFC) Scanning Raman Lidar (SRL) participated in the International H2O Project (IHOP), which occurred in May and June 2002 in the midwestern part of the United States. The SRL received extensive optical modificat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12866c1ebb59ad544b99ce5fc434eccc
https://doi.org/10.1175/jtech1838.1
https://doi.org/10.1175/jtech1838.1
Autor:
Zhien Wang, R-F. Lin, Keith Evans, Igor Veselovskii, Belay Demoz, Syed Ismail, R. A. Ferrare, Geary K. Schwemmer, D. N. Whiteman, Andreas Behrendt, J. Wang, Bruce M. Gentry, Edward V. Browell, J. Comer, Volker Wulfmeyer, P. Di Girolamo, D. Sabatino
Publikováno v:
Journal of Atmospheric and Oceanic Technology. 23:170-183
The NASA GSFC Scanning Raman Lidar (SRL) participated in the International H2O Project (IHOP) that occurred in May and June 2002 in the midwestern part of the United States. The SRL system configuration and methods of data analysis were described in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa32fca97a0124562f37f6a9de02815f
https://doi.org/10.1175/jtech1839.1
https://doi.org/10.1175/jtech1839.1
Autor:
D. N. Whiteman, D. O'c. Starr, Andrew Lare, Geary K. Schwemmer, Belay Demoz, R. A. Ferrare, Scott E. Bisson, John E. M. Goldsmith, Keith Evans
Publikováno v:
Monthly Weather Review. 133:1525-1543
Detailed observations of the interactions of a cold front and a dryline over the central United States that led to dramatic undulations in the boundary layer, including an undular bore, are investigated using high-resolution water vapor mixing ratio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a62b4dc2b707c830491aff9974db3830
https://doi.org/10.1175/mwr2932.1
https://doi.org/10.1175/mwr2932.1
Autor:
Konstantin P. Novoselov, Anand Radhakrishnan Mylapore, Coorg R. Prasad, Sangwoo Lee, Geary K. Schwemmer, Nikhil Mehta, In Heon Hwang, Alexander Achey, Mikhail Yakshin, Narasimha S. Prasad
Publikováno v:
Laser Radar Technology and Applications XIX; and Atmospheric Propagation XI.
In this paper, we describe the development of a three-beam elastic lidar that utilizes aerosol backscatter correlation to measure three-component wind profiles for detecting and tracking aircraft wake vortices; turbulence intensity and wind shear pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4e685a08cba1e4b06b86755f43cd699
https://doi.org/10.1117/12.2053066
https://doi.org/10.1117/12.2053066
Autor:
Geary K. Schwemmer, Nikhil Mehta, Mikhail Yakshin, Anand Radhakrishnan Mylapore, Sangwoo Lee, In Heon Hwang, Alexander Achey, Thomas F. Hanisco, Coorg R. Prasad
Publikováno v:
Laser Radar Technology and Applications XIX; and Atmospheric Propagation XI.
In this paper, we describe the development of a prototype differential absorption fluorescence lidar for nighttime tropospheric formaldehyde (H 2 CO) concentration profiling. H 2 CO has a strong absorption band in the 352-357nm region and fluoresces
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e277dcaad2849c16ab2e6b8f4d40141
https://doi.org/10.1117/12.2053420
https://doi.org/10.1117/12.2053420
Autor:
Geary K. Schwemmer, Russell Philbrick, Jie Lei, Sangwoo Lee, Coorg R. Prasad, Guangkun Li, In Heon Hwang, Narasimha S. Prasad
Publikováno v:
Applied optics. 52(35)
The vertical profile of atmospheric temperature is a principal state variable to study atmospheric stability. A lidar system, constructed using a 355 nm Nd:YAG laser transmitter, measures the temperature profile using the rotational Raman technique.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6830eb65d0ab65f6413e6fa800d244a3
https://pubmed.ncbi.nlm.nih.gov/24513899
https://pubmed.ncbi.nlm.nih.gov/24513899
Autor:
Vincent G. Brackett, Beat Schmid, Peter V. Hobbs, Lorraine A. Remer, John M. Livingston, Brent N. Holben, R. A. Ferrare, D. N. Whiteman, Geary K. Schwemmer, Keith Evans, P. B. Russell, S. H. Melfi, Edward Browell, Susan Kooi, Syed Ismail, Alexander Smirnov, Marian B. Clayton
Publikováno v:
ResearcherID
We compare aerosol optical thickness (AOT) and precipitable water vapor (PWV) measurements derived from ground and airborne lidars and sun photometers during the Tropospheric Aerosol Radiative Forcing Observational Experiment. Such comparisons are im
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d63c4f795f4b6abbaf963ac1e2a0b6d1
https://doi.org/10.1029/1999jd901202
https://doi.org/10.1029/1999jd901202
Autor:
Thomas D. Wilkerson, David Guerra, Albert D. Wooten, Geary K. Schwemmer, Sandipan S. Chaudhuri
Publikováno v:
Journal of Geophysical Research: Atmospheres. 104:22287-22292
A ground-based atmospheric lidar system that utilizes a holographic optical telescope and scanner has been developed and successfully operated to obtain atmospheric backscatter profiles. The Prototype Holographic Atmospheric Scanner for Environmental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4de3cc248ebb4c720be7479d9088f43b
https://doi.org/10.1029/1999jd900324
https://doi.org/10.1029/1999jd900324
Publikováno v:
Journal of Applied Meteorology. 37:308-324
A new technique for retrieving near-surface moisture and profiles of mixing ratio and potential temperature through the depth of the marine atmospheric boundary layer (MABL) using airborne lidar and multichannel infrared radiometer data is presented.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15ac2a438aed63d18c7118b4be56629b
https://doi.org/10.1175/1520-0450-37.3.308
https://doi.org/10.1175/1520-0450-37.3.308