Results 61 to 70 of about 538,294 (297)

Transport and Mixing in Planetary Polar Vortices with Annular and Monopolar Potential Vorticity Structures

open access: yesThe Planetary Science Journal
Polar vortices are a common feature in the solar system, but their structure varies between planets. Although polar vortices are characterized by a coherent region of high potential vorticity (PV) in the polar regions, the meridional variation of PV ...
Jacob Shultis   +3 more
doaj   +1 more source

Using a large ensemble of simulations to assess the Northern Hemisphere stratospheric dynamical response to tropical volcanic eruptions and its uncertainty

open access: yesGeophysical Research Letters, 2016
The observed strengthening of the Northern Hemisphere (NH) polar vortex after tropical volcanic eruptions appears to be underestimated by coupled climate models.
Matthias Bittner   +3 more
doaj   +1 more source

Detection of air within the northern hemisphere polar vortex at Wakkanai and at Tsukuba, Japan [PDF]

open access: yes, 2003
P(論文)Intensive ozonesonde observations were conducted at Wakkanai(45.4°N , 141.7°E ), the northernmost city of Japan, during the period 15th to 24th February 2001.
Chubachi, Shigeru   +2 more
core   +1 more source

Protocol for quantifying miRNA trafficking across the endosomal membrane

open access: yesFEBS Open Bio, EarlyView.
An in vitro protocol measures miRNA uptake into endosomes isolated from mammalian cell extracts, which are free of subcellular contaminants. Performed at 37 °C in the presence of ATP, it ensures the import of single‐stranded miRNA into the endosomal lumen.
Syamantak Ghosh   +2 more
wiley   +1 more source

Siege in the Southern Stratosphere: Hunga Tonga‐Hunga Ha'apai Water Vapor Excluded From the 2022 Antarctic Polar Vortex

open access: yesGeophysical Research Letters, 2023
We use Aura Microwave Limb Sounder (MLS) trace gas measurements to investigate whether water vapor (H2O) injected into the stratosphere by the Hunga Tonga‐Hunga Ha'apai (HTHH) eruption affected the 2022 Antarctic stratospheric vortex.
Gloria L. Manney   +9 more
doaj   +1 more source

Ozone and water vapour in the austral polar stratospheric vortex and sub-vortex [PDF]

open access: yesAnnales Geophysicae, 2004
Abstract. In-situ measurements of ozone and water vapour, in the Antarctic lower stratosphere, were made as part of the APE-GAIA mission in September and October 1999. The measurements show a distinct difference above and below the 415K isentrope. Above 415K, the chemically perturbed region of low ozone and water vapour is clearly evident.
E. PEET   +4 more
openaire   +5 more sources

Arctic polar vortex dynamics during winters 2014/2015 and 2020/2021 [PDF]

open access: yes, 2023
The dynamic barrier of the polar vortex contributes to lowering the temperature inside the vortex in the lower stratosphere and prevents the penetration of air masses into the vortex. The presence of a dynamic barrier during winter is one of the criteria
E. S. Savelieva   +3 more
core   +1 more source

Structural and biochemical insights into the thermostable esterase Ta0887 from Thermoplasma acidophilum

open access: yesFEBS Open Bio, EarlyView.
In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey   +4 more
wiley   +1 more source

Climatology and trends in the forcing of the stratospheric zonal-mean flow [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
The momentum budget of the Transformed Eulerian-Mean (TEM) equation is calculated using the European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis (ERA-40) and the National Centers for Environmental Prediction (NCEP) Reanalysis 2 (R-2 ...
E. Monier, B. C. Weare
doaj   +1 more source

Simulation of Northern Winter Stratospheric Polar Vortex Regimes in CESM2-WACCM

open access: yesAtmosphere, 2023
The possible impact of various Arctic polar vortex regimes for the stratosphere on the Northern Hemisphere extratropics has not been fully understood.
Dong Guo   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy