Results 61 to 70 of about 2,581 (220)

Diagnostics of the tropical tropopause layer from in-situ observations and CCM data [PDF]

, 2009
A suite of diagnostics is applied to in-situ aircraft measurements and one Chemistry-Climate Model (CCM) data to characterize the vertical structure of the Tropical Tropopause Layer (TTL).
Fierli, F., Manzini, Elisa, C. Schiller, E. Manzini, C. Cagnazzo, Di Donfrancesco, Guido, Volk, C.-Michael, Volk, C.M., Di Donfrancesco, G., Schiller, Cornelius, C. M. Volk, Cagnazzo, C., F. D'Amato, Schiller, C., F. Cairo, E. Palazzi, F. Fierli, Cairo, Francesco, Cagnazzo, Chiara, Palazzi, E., Vok, C.M., Cairo, F., D'Amato, F., Palazzi, Elisa, Volk, C., Ravegnani, F., D'Amato, Francesco, F. Ravegnani, Ravegnani, Fabrizio, Manzini, E., Fierli, Federico, G. Di Donfrancesco, DiDonfrancesco, G.   +32 more
core   +1 more source

A high-altitude balloon experiment to probe stratospheric electric fields from low latitudes [PDF]

Annales Geophysicae, 2017
The Earth's electrical environment hosts a giant electrical circuit, often referred to as the global electric circuit (GEC), linking the various sources of electrical generators located in the lower atmosphere, the ionosphere and the magnetosphere ...
S. Gurubaran, M. Shanmugam, K. Jawahar, K. Emperumal, P. Mahavarkar, S. K. Buduru   +5 more
doaj   +1 more source

Laboratory Characterization of Cryogenic Frost‐Point Hygrometers Using an Upper Air Simulator

Meteorological Applications, Volume 33, Issue 3, May/June 2026.
Cryogenic frost‐point hygrometers (CFHs) are widely used to accurately measure water vapor pressure in the upper atmosphere. The performance of CFHs has been thoroughly evaluated using an Upper Air Simulator (UAS), a controlled laboratory system designed to generate and regulate frost‐point levels across a range of temperatures.
Sang‐Wook Lee, Seonwoong Kim, Sunghun Kim, Young‐Suk Lee, Yong‐Gyoo Kim   +4 more
wiley   +1 more source

Past Field Experiments of Solar Radiation Modification: A Review of the Scientific and Technical Aspects for Governance

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract As global warming intensifies, Solar Radiation Modification (SRM) has drawn increasing scientific and policy interest as a potential means to temporarily offset climate impacts. This review examines past SRM (or SRM‐like) field experiments, categorized into three primary techniques: Tropospheric and Stratospheric Aerosol Injection (SAI ...
I. Hernandez‐Galindo, A. Määttänen, B. H. Redmond Roche, O. Boucher, P. J. Irvine, J. C. Moore   +5 more
wiley   +1 more source

Differentiating Solar Radiation Modification Field Experiments: Scale, Technical Characteristics, and Governance Implications

Earth's Future, Volume 14, Issue 5, May 2026.
Abstract Proposed solar radiation modification (SRM) field experiments are receiving growing scientific and policy attention, with several localized experiments having occurred or under development. While they may be critical for improving technical understanding and reducing uncertainties, SRM field experiments remain controversial and inadequately ...
B. H. Redmond Roche, I. Hernandez‐Galindo, A. Määttänen, J. C. Moore, O. Boucher, B. M. Dollner, A. Duffey, B. Gasparini, J. Henneberger, A. N. Koyun, D. McGrath, I. Steinke, J. Vinders, D. Visioni, P. J. Irvine   +14 more
wiley   +1 more source

More evidence for very short-lived substance contribution to stratospheric chlorine inferred from HCl balloon-borne in situ measurements in the tropics [PDF]

Atmospheric Chemistry and Physics, 2010
Volume mixing ratio (vmr) vertical profiles of hydrogen chloride (HCl) are retrieved from in situ measurements performed by a balloon-borne infrared tunable diode laser absorption spectrometer (SPIRALE) during two balloon flights in the tropics (Teresina,
Y. Mébarki, V. Catoire, N. Huret, G. Berthet, C. Robert, G. Poulet   +5 more
doaj  

Influence of Variations in Gravity Wave Properties on Cirrus Ice Number Concentrations Produced by Homogeneous Freezing in the Tropical Tropopause Layer

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract In this study, we examine the impact of variations in gravity wave properties on the ice crystal number concentrations in the tropical tropopause layer (TTL). Analysis of quasi‐Lagrangian superpressure balloon measurements from the Stratéole‐2 campaign shows that high‐frequency waves dominate the occurrence of relatively large vertical wind ...
E. J. Jensen, M. Corcos, B. Kärcher
wiley   +1 more source

Midlatitude ClO during the maximum atmospheric chlorine burden : in situ balloon measurements and model simulations [PDF]

, 2005
Chlorine monoxide (ClO) plays a key role in stratospheric ozone loss processes at midlatitudes. We present two balloonborne in situ measurements of ClO conducted in northern hemisphere midlatitudes during the period of the maximum of total inorganic ...
R. Müller, Toohey, D., Müller, Rolf, Stroh, Fred, Müller, R., Vogel, Bärbel, F. Stroh, Grooß, J.-U., J.-U. Grooß, Woyke, Thomas, D. Toohey, Engel, Andreas, T. Woyke, Stroh, F., Engel, A., A. Engel, Vogel, B., Woyke, Th., Toohey, Darin W., B. Vogel, Woyke, T., Grooß, Jens-Uwe   +21 more
core   +1 more source

Design and In-Flight Performance of the Power Converter Module and the Pressurised Enclosure for a Scientific Payload Onboard a Stratospheric Balloon

Aerospace
This paper addresses the technical requirements and challenges encountered in the design and development of a customised power electronics board for a stratospheric balloon payload.
José Luis Gasent-Blesa, Esteban Sanchis-Kilders, Agustín Ferreres, David Gilabert, Julián Blanco Rodríguez, Juan B. Ejea   +5 more
doaj   +1 more source

Spatiotemporal variations of stratospheric aerosol size between 2002 and 2005 from measurements with SAGE III/M3M [PDF]

Atmospheric Chemistry and Physics
Stratospheric aerosol size distribution parameters are derived from the multiple-wavelength aerosol extinction retrievals of the SAGE III/M3M instrument (Stratospheric Aerosol and Gas Experiment III on the Russian satellite Meteor-3M) and analyzed for ...
F. Wrana, T. Deshler, C. Löns, L. W. Thomason, L. W. Thomason, C. von Savigny   +5 more
doaj   +1 more source