Results 51 to 60 of about 700 (138)

Tropical Cyclones Drive Enhanced Inorganic Iodine in the Mid‐Latitude Upper Troposphere

Geophysical Research Letters, Volume 53, Issue 10, 28 May 2026.
Abstract Halogens deplete tropospheric and stratospheric ozone, but the role of iodine is still elusive. Atmospheric iodine mainly originates from marine inorganic (I2, HOI) and organic (CH3I, CH2I2, CH2IBr, and CH2ICl) emissions. We report on airborne measurements of atmospheric iodine oxide (IO) concentrations up to 15 km altitude from two flights of
Karolin Voss, Bärbel Vogel, Thorsten Diederich, Andreas Engel, Jens‐Uwe Grooß, Timo Keber, Flora Kluge, Meike K. Rotermund, Tanja Schuck, Benjamin Weyland, André Butz, Klaus Pfeilsticker   +11 more
wiley   +1 more source

Quantifying contributions to the recent temperature variability in the tropical tropopause layer [PDF]

Atmospheric Chemistry and Physics, 2015
The recently observed variability in the tropical tropopause layer (TTL), which features a warming of 0.9 K over the past decade (2001–2011), is investigated with a number of sensitivity experiments from simulations with NCAR's CESM-WACCM chemistry–
W. Wang, K. Matthes, T. Schmidt
doaj   +1 more source

Attributing Upper‐Tropospheric Warm Biases in CMIP6 Models to Ice Cloud‐Radiation Interaction Deficiencies Over Tropical Oceans

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract We assess the impact of hydrometeor radiative effects on tropical and subtropical Pacific air temperature anomalies (TAA) using Coupled Model Intercomparison Project Phase 6 (CMIP6) model simulations and satellite data. CMIP6 models are grouped by their treatment of frozen hydrometeors: SON2 (explicit cloud and falling ice), SON1 (simplified),
J.‐L. F. Li, Wei‐Liang Lee, Kuan‐Man Xu, J. H. Jiang, Yi‐Hui Wang, Yu‐Cian Tsai, S‐P. Ho, Qing Yue, Graeme Stephens, Jia‐Yuh Yu, Huiwen Chuang   +10 more
wiley   +1 more source

Dust Decline Amplifies High‐Cloud Ice‐to‐Liquid Transition and Buffers the Radiative Feedback Under Warming

Geophysical Research Letters, Volume 53, Issue 9, 16 May 2026.
Abstract The response of the cloud phase to global warming is a critical yet poorly constrained component of Earth's climate sensitivity. While rising temperatures drive a thermodynamic transition from ice to liquid clouds, the role of ice‐nucleating particles in modulating this shift remains underexplored.
Yang Wang, Tianrong Chai, Jiming Li, Lu Feng, Jialing Jian, Jianping Huang, Greg M. McFarquhar   +6 more
wiley   +1 more source

When Thunderstorms Reach the Stratosphere: Why Storm Structure May Matter for Climate

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 9, 16 May 2026.
Abstract Deep convection that overshoots the tropopause provides one of the fastest pathways for exchanging air between the troposphere and the stratosphere. Using extensive in situ observations from the dynamics and chemistry of the summer stratosphere (DCOTSS) campaign, Shepherd et al.
Francesco Cairo
wiley   +1 more source

The Impact of Cloud Radiative Effects on the Tropical Tropopause Layer Temperatures

Atmosphere, 2018
A single-column radiative-convective model (RCM) is a useful tool to investigate the physical processes that determine the tropical tropopause layer (TTL) temperature structures.
Qiang Fu, Maxwell Smith, Qiong Yang
doaj   +1 more source

Climatic Higher‐Order Balanced Winds Beyond Geostrophic and Gradient Wind Fields

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract We present a novel approach to derive three‐dimensional Climatic Higher‐Order Balanced (CHOB) wind fields from thermodynamic state variables in the free troposphere and stratosphere. The CHOB method is developed for monthly synoptic‐scale wind field estimation, utilizing commonly used balanced winds (geostrophic and gradient wind) enhanced by ...
I. Nimac, J. Unegg, J. Danzer
wiley   +1 more source

GNSS-RO investigation of tropopause dynamics surrounding the geomagnetic storm of 10–13 May 2024

Bibechana
The tropopause is the transitional layer between the troposphere and stratosphere, which has its significance in the weather monitoring and forecasting, aviation technology, and other various fields.
Tulashi Gautam, Madhu Sudan Paudel, Basu Dev Ghimire, Narayan Prasad Chapagain   +3 more
doaj   +1 more source

Analysis of Radar Characteristics and Evolution Mechanisms of Supercells Inducing Three Strong Tornado Events Under Extratropical Cyclone Background

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract On the afternoon of 5 July 2024, under the influence of an extratropical cyclone, a rare triple‐tornado event struck Heze City, Shandong Province, comprising the Dongming tornado (EF3), the Juancheng tornado (EF2), and the Yuncheng tornado (EF3). These tornadoes resulted in five fatalities and substantial economic damage.
Jiwen Zhang, Anhua Jing, Yanzhen Kang, Yongqiang Jiang, Chaohui Chen, Hongrang He, Jie Ding   +6 more
wiley   +1 more source

Enhanced Aerosol Mass in the Tropical Tropopause Layer Linked to Ozone Abundance

Geophysical Research Letters
Aerosol particles play a critical role in the tropical tropopause layer (TTL) through cloud formation and heterogeneous chemistry, influencing the radiative and chemical balance of the stratosphere.
Shang Liu, Troy D. Thornberry, Pengfei Yu, Sarah Woods, Karen H. Rosenlof, Ru‐Shan Gao   +5 more
doaj   +1 more source