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Articles 2281 - 2310 of 19454
Full-Text Articles in Entire DC Network
Identification Of Ttl Boundaries Using The Ozone-Water Vapor Relationship, Laura Pan
Identification Of Ttl Boundaries Using The Ozone-Water Vapor Relationship, Laura Pan
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Two sets of TTL boundary definitions have been proposed in the literature. One uses the static stability structure (Gettelman and Foster, 2002) and the other uses the radiative forcing mass flux criterion (Fu et al., 2007; Fueglistaler et al., 2009). In this work, we present a method to characterize the TTL boundaries using ozone–water vapor relationship. The result shows that the tracer behavior supports the level of the minimum stability to be the lower boundary of the transition layer and the cold point to be a good proxy of the upper boundary. Using this method, we characterize and compare the …
Ozone Variations Over The Northern Subtropical Region Revealed By Ozonesonde Observations In Hanoi, Shin-Ya Ogino
Ozone Variations Over The Northern Subtropical Region Revealed By Ozonesonde Observations In Hanoi, Shin-Ya Ogino
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Seasonal and subseasonal variations in the ozone mixing ratio (OMR) are investigated by using continuous seven-year ozonesonde data from Hanoi (21 0 N, 106 0 E), Vietnam. The mean seasonal variations for the seven years show large amplitude at the upper troposphere and lower stratosphere (UTLS) region (10–18 km) and at the lower troposphere (around 3 km) with standard deviations relative to the mean value of about 30% for both regions. In the UTLS region, the seasonal variation in the OMR shows a minimum in winter and a maximum in spring to summer. The variation seems to be caused by …
The Noaa H2o And O3 Data Base, Karen Rosenlof
The Noaa H2o And O3 Data Base, Karen Rosenlof
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
No abstract provided.
In-Situ Water Vapor And Ozone Measurements In Lhasa And Kunming During The Asian Summer Monsoon, Jianchun Bian, Laura L. Pan, Laura Paulik, Holger Vömel, Hongbin Chen, Daren Lu
In-Situ Water Vapor And Ozone Measurements In Lhasa And Kunming During The Asian Summer Monsoon, Jianchun Bian, Laura L. Pan, Laura Paulik, Holger Vömel, Hongbin Chen, Daren Lu
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Asian summer monsoon (ASM) anticyclone circulation is recognized to be a significant transport pathway for water vapor and pollutants to enter the stratosphere. Observational evidence, however, is largely based on satellite retrievals. We report the first coincident in situ measurements of water vapor and ozone within the ASM anticyclone. The combined water vapor and ozone sondes were launched from Kunming in August 2009 and Lhasa in August 2010. We present the key characteristics of these measurements, and provide a comparison to similar measurements from Alajuela, Costa Rica, an equatorial location, during the Tropical Composition, Cloud and Climate Coupling (TC4) campaign …
Development Of New Hydorometer Video Sonde (Hyvis) System For Ice Cloud Observation In Ttl Region, Kensaku Shimizu
Development Of New Hydorometer Video Sonde (Hyvis) System For Ice Cloud Observation In Ttl Region, Kensaku Shimizu
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Cirrus clouds in the TTL play an important role on the radiation budget and thus the understanding of their optical properties together with the microphysical processes associated with their formation is quite important. In spite of the progress in theoretical research on the TTL cirrus (e.g., Koop et al., 2000; Peter et al., 2006), observational research is not enough because of the difficulty due to its height and coldness. On the other hand, research of cirrus clouds at 10 km height has been carried out since 1990s using aircraft and hydrometer sondes such as HYVIS (Murakami and Orikasa, 1997) and …
Impact Of Abrupt Stratospheric Dynamical Change On Tropical Tropopause Layer, Nawo Eguchi, Kunihiko Kodera, Tomoe Nasuno
Impact Of Abrupt Stratospheric Dynamical Change On Tropical Tropopause Layer, Nawo Eguchi, Kunihiko Kodera, Tomoe Nasuno
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
We have studied the impact of stratospheric circulation change on water vapor in the Tropical Tropopause Layer (TTL) during the stratospheric sudden warming (SSW) events (e.g., Eguchi and Kodera, 2010). Increased Brewer-Dobson circulation associated with SSW produces cooling in the tropical lower stratosphere (LS). The cooling generally produces more cirrus clouds and decreases of the water vapor mixing ratio (WV) in the TTL, except for some regions over Africa and South American continents where penetrating clouds are expected. This time, we found a new stratospheric phenomenon which produces abrupt warming in the tropical stratosphere converse to the SSW event. The …
Volatility And Composition Of Ttl Aerosols By Balloon-Borne In-Situ Observation, Masahiko Hayashi
Volatility And Composition Of Ttl Aerosols By Balloon-Borne In-Situ Observation, Masahiko Hayashi
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Tandem optical particle counters (OPC) were launched by balloon, from Biak 1 0 S, 136 0 E in January 2011 and 2012. One of the tandem OPC directly observed size distribution of aerosols of 0.3 – 7 µm in diameter, and another one observed size distributions in heated conditions of 100 0 , 150 0 , and 200 0 C through thermodenuder, to observe volatility of TTL aerosols. Most of TTL aerosol smaller than 0.8 µm in diameter show high volatility, suggesting to be composed of sulfuric acid or sulfate. There also exist non-volatile particles larger than 0.8 µm in …
Cloud-Top Height Dataset By Geostationary Satellite Split Window Measurements Trained With Cloudsat Data, Noriyuki Nishi
Cloud-Top Height Dataset By Geostationary Satellite Split Window Measurements Trained With Cloudsat Data, Noriyuki Nishi
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Lookup tables for estimating the cloud-top height (CTOP) and visible optical thickness of uppertropospheric clouds by the infrared brightness temperature (TB) at 10.8 μm (T11) and its difference from TB at 12 μm (DT11-12) measured by geostationary satellites are developed (Hamada and Nishi 2010, JAMC). These lookup tables were constructed by regressing the cloud radar measurements by the CloudSat satellite over the infrared measurements by the Japanese geostationary multifunctional transport satellite MTSAT-1R and MTSAT-2. The CTOP is available at http://database.rish.kyoto-u.ac.jp/arch/ctop/ since July 2005. The data have good precision for cirrus clouds (τ > ~3) that have large DT11-12 values and are …
Quantifying The Deep Convective Temperature Signal Within The Tropical Tropopause Layer (Ttl), Thomas Birner
Quantifying The Deep Convective Temperature Signal Within The Tropical Tropopause Layer (Ttl), Thomas Birner
U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs
Dynamics on a vast range of spatial and temporal scales, from individual convective plumes to planetary-scale circulations, play a role in driving the temperature variability in the tropical tropopause layer (TTL). Here, we aim to better quantify the deep convective temperature signal within the TTL using multiple datasets. First, we investigate the link between ozone and temperature in the TTL using the Southern Hemisphere Additional Ozonesondes (SHADOZ) dataset. Low ozone concentrations in the TTL are indicative of deep convective transport from the boundary layer. We confirm the usefulness of ozone as an indicator of deep convection by identifying a typical …
October 2012 Academic Affairs Minutes, University Of Nebraska At Kearney Academic Affairs Committee
October 2012 Academic Affairs Minutes, University Of Nebraska At Kearney Academic Affairs Committee
Academic Affairs Committee Minutes
No abstract provided.
The Fierce Green Fire: Vol. 3 Issue 6, Wofford College Environmental Studies Program
The Fierce Green Fire: Vol. 3 Issue 6, Wofford College Environmental Studies Program
The Fierce Green Fire
No abstract provided.
Development Of Tungsten Based Ceramic-Metallic Nuclear Fuel Containing Uranium Oxide For Nuclear Cryogenic Propulsion Stage Project, Jaewon Choi
Von Braun Symposium Student Posters
No abstract provided.
Evaluation Of Space-Based Support Through Servir During And After The 2009 Floods And Landslides In El Salvador, Eric R. Anderson, D Irwin, F Delgado, M Diaz, G Molina, Emil Cherrington
Evaluation Of Space-Based Support Through Servir During And After The 2009 Floods And Landslides In El Salvador, Eric R. Anderson, D Irwin, F Delgado, M Diaz, G Molina, Emil Cherrington
Von Braun Symposium Student Posters
No abstract provided.
Thermal Detection Of Inaccessible Corrosion, Matthew Charnley, Andrew Rzeznik
Thermal Detection Of Inaccessible Corrosion, Matthew Charnley, Andrew Rzeznik
Mathematical Sciences Technical Reports (MSTR)
In this paper, we explore the mathematical inverse problem of detecting corroded material on the reverse side of a partially accessible metal plate. We will show how a linearization can be used to simplify the initial problem and explain a regularization method used to obtain acceptable results for the corrosion profile. We will also state and perform some calculations for the full three-dimensional problem for possible future work.
Education Program Changes 10/18/12, Curriculum Committee
Education Program Changes 10/18/12, Curriculum Committee
Curriculum Committee Reports
No abstract provided.
The Scarlet - Volume Xcii, No. 3 (October 18, 2012), Scarlet Staff
The Scarlet - Volume Xcii, No. 3 (October 18, 2012), Scarlet Staff
The Scarlet (Student Newspaper) (2011-present)
The October 18, 2012 edition of The Scarlet (est. 1939), Clark University's student-run newspaper. The Scarlet is intellectually and editorially independent of the University.
Unh Celebrates Commercialization Growth; Recognizes Success Of Mathematician Kevin Short, Erika Mantz
Unh Celebrates Commercialization Growth; Recognizes Success Of Mathematician Kevin Short, Erika Mantz
Media Relations
No abstract provided.
Long-Lived Electron Spins In A Modulation Doped (100) Gaas Quantum Well, John S. Colton, D. Meyer, K Clark, D. Craft, J. Cutler, T. Park, P. White
Long-Lived Electron Spins In A Modulation Doped (100) Gaas Quantum Well, John S. Colton, D. Meyer, K Clark, D. Craft, J. Cutler, T. Park, P. White
Faculty Publications
We have measured T1 spin lifetimes of a 14 nm modulation-doped (100) GaAs quantum well using a time-resolved pump-probe Kerr rotation technique. The quantum well was selected by tuning the wavelength of the probe laser. T1 lifetimes in excess of 1 Us were measured at 1.5 K and 5.5 T, exceeding the typical T2 lifetimes that have been measured in GaAs and II-VI quantum wells by orders of magnitude. We observed effects from nuclear polarization, which were largely removable by simultaneous nuclear magnetic resonance, along with two distinct lifetimes under some conditions that likely result from probing two differently localized …
Development And Test Of A Vlf-Receiver For Monitoring Solar Flares, Liz Klar, Chris Phillips, Akito D. Kawamura, Eric Zirnstein
Development And Test Of A Vlf-Receiver For Monitoring Solar Flares, Liz Klar, Chris Phillips, Akito D. Kawamura, Eric Zirnstein
Von Braun Symposium Student Posters
No abstract provided.
Hindu Kush Himalayan Food Security: Using Nasa Data In Dssat, Claire Herdy, Lee Ellenburg
Hindu Kush Himalayan Food Security: Using Nasa Data In Dssat, Claire Herdy, Lee Ellenburg
Von Braun Symposium Student Posters
No abstract provided.
Yield-Biomass Correlation Assessment: Satellite-Based Temperature Analysis & Vegetation Indices At Ingenio Santa Rosa, Panama, Travis Rael, Victor Tapia
Yield-Biomass Correlation Assessment: Satellite-Based Temperature Analysis & Vegetation Indices At Ingenio Santa Rosa, Panama, Travis Rael, Victor Tapia
Von Braun Symposium Student Posters
5th Wernher von Braun Memorial Symposium
Analysis Of Stacked Linear Transformer Drivers For Application In Nuclear Fusion Propulsion, Patrick Giddens
Analysis Of Stacked Linear Transformer Drivers For Application In Nuclear Fusion Propulsion, Patrick Giddens
Von Braun Symposium Student Posters
No abstract provided.
Charger Times Vol. 1, No. 7, 2012-10-18, University Of Alabama In Huntsville
Charger Times Vol. 1, No. 7, 2012-10-18, University Of Alabama In Huntsville
Charger Times (2012-2014)
No abstract provided.
The Role Of Space Systems During The April 2011 Multiple Tornado Outbreak, Emma Kiele Fry
The Role Of Space Systems During The April 2011 Multiple Tornado Outbreak, Emma Kiele Fry
Von Braun Symposium Student Posters
No abstract provided.
Erosion Vulnerability In The Zarati Subwatershed And Its Impact Of Water Quality, Savanna Guelde, Alicia Mata, Troy Atchison
Erosion Vulnerability In The Zarati Subwatershed And Its Impact Of Water Quality, Savanna Guelde, Alicia Mata, Troy Atchison
Von Braun Symposium Student Posters
No abstract provided.
The Effects Of Land Cover Change On Water Quality In The Bay Of Parita, Panama, Nikki Wright, Elinor Crook
The Effects Of Land Cover Change On Water Quality In The Bay Of Parita, Panama, Nikki Wright, Elinor Crook
Von Braun Symposium Student Posters
No abstract provided.
The Pan American (2012-10-18), Karen Antonacci
The Pan American (2012-10-18), Karen Antonacci
UTPA Archives - The Pan American Newspaper
Vol. 69, No. 8
Sunvelope: A Nevada Company Revolutionizes Solar Hot Water Collectors, Nevada Institute For Renewable Energy Commercialization (Nirec)
Sunvelope: A Nevada Company Revolutionizes Solar Hot Water Collectors, Nevada Institute For Renewable Energy Commercialization (Nirec)
Nevada Newsflash
Solar hot water is just not sexy to the general public—and that’s created a challenge for Pete Mokler, director of marketing at Sunvelope Solar. “Our technology can deliver more energy units per dollar invested—whether counted in therms, BTUs, or kilowatt hours—than photovoltaic, wind, geothermal and biomass,” says Mokler, “but you say ‘solar hot water’ and people yawn.”
Development Of A Lightweight, Monolithic, Aspheric Mirror Utlizing Fdm Technology, Josiah Thomas
Development Of A Lightweight, Monolithic, Aspheric Mirror Utlizing Fdm Technology, Josiah Thomas
Von Braun Symposium Student Posters
No abstract provided.
Remote Sensing The Environmental Effects Of Reforestation: Multi- And Hyperspectral Temporal Analysis For Punjab, India, Melanie Phillips
Remote Sensing The Environmental Effects Of Reforestation: Multi- And Hyperspectral Temporal Analysis For Punjab, India, Melanie Phillips
Von Braun Symposium Student Posters
No abstract provided.