Zobrazeno 1 - 10
of 188
pro vyhledávání: '"David J. Hofmann"'
Publikováno v:
Eos, Transactions American Geophysical Union. 90:472
David J. Hofmann, a pioneer in stratospheric aerosol and ozone research, passed away in Boulder, Colo., on 11 August 2009. He was 72. Dave, a frequent contributor to AGU publications and meetings, was elected an AGU Fellow in 2006. His long and proli
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7f3bc64ca248ea22346c60a65ffebfd
https://doi.org/10.1029/2009eo490005
https://doi.org/10.1029/2009eo490005
Publikováno v:
International Journal of Remote Sensing. 30:3995-4008
Since 1986, the Earth System Research Laboratory and its predecessors have been making weekly balloon ozone soundings at the South Pole Station in Antarctica. During the springtime ozone hole period, the sounding frequency is increased to 2–3 per w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d305ebbeef0fa5c47b888389f99cd7ff
https://doi.org/10.1080/01431160902821932
https://doi.org/10.1080/01431160902821932
Autor:
John E. Barnes, David J. Hofmann
Publikováno v:
Geophysical Research Letters. 28:2895-2898
The stratospheric aerosol layer above Mauna Loa Observatory (MLO), Hawaii, has been at low background levels for the past 5 years. This is the first time that an extended non-volcanic background aerosol period has been observed since modern measureme
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0804eaa0a7a5efb5921df86c294dd8b6
https://doi.org/10.1029/2001gl013127
https://doi.org/10.1029/2001gl013127
Publikováno v:
Geophysical Research Letters. 27:3453-3456
Stratospheric water vapor concentrations measured at two midlatltude locations in the northern hemisphere show water vapor amounts have increased at a rate of 1-1.5% yr'1 (0.05-0.07 ppmv yr"1) for the past 35 years. At Washington, D.C., meas- urement
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebd7649011dd7f1b8387ac8fff89d2b6
https://doi.org/10.1029/2000gl012133
https://doi.org/10.1029/2000gl012133
Publikováno v:
Atmospheric Environment. 43:2084-2086
Carbon dioxide is increasing in the atmosphere and is of considerable concern in global climate change because of its greenhouse gas warming potential. The rate of increase has accelerated since measurements began at Mauna Loa Observatory in 1958 whe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::450b3f04a417e55f6b0d24389853d8d3
https://doi.org/10.1016/j.atmosenv.2008.12.028
https://doi.org/10.1016/j.atmosenv.2008.12.028
Publikováno v:
Geophysical Research Letters. 25:2433-2436
The University of Wyoming balloonborne condensation nuclei (CN) record for 1973–1997 was analyzed to determine possible effects of commercial aircraft on the 8.6–12.7 km altitude range of the atmosphere, which includes the primary commercial airl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::daf56b58a9c19bbe983eee89c7f16fb2
https://doi.org/10.1029/98gl01776
https://doi.org/10.1029/98gl01776
Autor:
John E. Barnes, David J. Hofmann
Publikováno v:
Geophysical Research Letters. 24:1923-1926
Dual-wavelength aerosol lidar backscatter measurements at Mauna Loa Observatory are used to monitor and characterize the 15–30 km stratospheric aerosol layer. The decay of aerosol loading following the El Chichon, Mexico (17°N) and Pinatubo, Phili
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9dfd87200a6a97e57ff05db7928af61f
https://doi.org/10.1029/97gl01943
https://doi.org/10.1029/97gl01943
Publikováno v:
Journal of Geophysical Research: Atmospheres. 102:19265-19273
A UV spectroradiometer was installed at Mauna Loa Observatory (MLO), Hawaii, in July 1995. This instrument, based on a commercially available double monochromator, uses a diffuser mounted as a horizontal receptor inside a quartz dome and views the wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcbb1db6fb535c11badec33c80169fc2
https://doi.org/10.1029/97jd01391
https://doi.org/10.1029/97jd01391
Publikováno v:
Journal of Geophysical Research: Atmospheres. 102:8931-8943
Ten years of ozonesonde data at the south pole are used to investigate trends and search for indicators that can be used to detect Antarctic ozone recovery in the future. These data indicate that there have been no systematic winter temperature trend
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62cac94caeba7b68969451cb33b0e78b
https://doi.org/10.1029/96jd03749
https://doi.org/10.1029/96jd03749
Autor:
Christos Zerefos, Andreas Volz-Thomas, William J. Randel, David J. Hofmann, B. H. Subbaraya, Richard D. McPeters, Neil R. P. Harris, Lane Bishop, Joseph M. Zawodny, James B. Kerr, M. Prendez, Johannes Staehelin, Gérard Ancellet
Publikováno v:
Journal of Geophysical Research: Atmospheres. 102:1571-1590
Current understanding of the long-term ozone trends is described. Of particular concern is an assessment of the quality of the available measurements, both ground and satellite based. Trends in total ozone have been calculated for the ground-based ne
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc01980243ae5beefc6522e47b53a441
https://doi.org/10.1029/96jd02440
https://doi.org/10.1029/96jd02440