Results 71 to 80 of about 746 (167)

Transport of water vapor in the tropical tropopause layer [PDF]

Geophysical Research Letters, 2002
A trajectory model coupled to a simple micro‐physical model is used to explore the observed relationship between convection, water vapor and cirrus clouds in the tropical tropopause layer (TTL). Horizontal transport associated with the local Hadley circulation leads to water vapor minima in the winter hemisphere separated from the convective regions ...
A. Gettelman, W. J. Randel, F. Wu, S. T. Massie   +3 more
openaire   +1 more source

A Novel Methodology for Probing the Observed Influence of the QBO on Tropical Tropospheric Climate

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract The stratospheric Quasi‐Biennial Oscillation (QBO) is characterized by descending bands of wind and temperature anomalies in the tropical stratosphere with a mean period of ∼28 months. Numerous studies have argued that the QBO has a significant impact on tropical tropospheric climate.
Ying‐Ju Chen, David W. J. Thompson
wiley   +1 more source

Could Narrow Bipolar Events Serve as a Distinct Lightning Proxy for Revealing Overshooting Thunderclouds Development?

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Narrow bipolar events (NBEs) are often generated in overshooting thunderclouds (OT) penetrating the stratosphere. However, how and under what conditions OT produces such discharges remains unclear. With 3‐year lightning observations and simultaneous cloud top brightness temperature measurements over South China, we developed a more accurate OT
Baojun Wu, Feifan Liu, Baoyou Zhu, Gaopeng Lu, Wenhao Xu, Ming Luo, Weitao Lyu, Jiuhou Lei   +7 more
wiley   +1 more source

Height‐Dependent Sensitivity of Cloud Scales to Surface Temperature Anomaly Observed by Active Satellites

Geophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract As a key macrophysical property, cloud horizontal scale plays a critical role in cloud radiative effect (CRE), precipitation and convective structures. Until now, however, how cloud scales vary with surface temperature anomaly and their subsequent impacts on CRE and precipitation remains unclear.
Lijie Zhang, Jiming Li, Zhenyu Cao, Sihang Xu, Qiudi Xu, Bida Jian, Yang Wang, Yuan Wang   +7 more
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

Ozone Transport‐Radiation Feedbacks in the Tropical Tropopause Layer

Geophysical Research Letters, 2019
AbstractThe tropical tropopause layer (TTL) temperature balance is of considerable interest for its control over the amount of water entering the stratosphere. The upwelling branch of the Brewer‐Dobson circulation (BDC) directly affects these temperatures through adiabatic cooling.
Edward J. Charlesworth, Thomas Birner, John R. Albers   +2 more
openaire   +1 more source

Imprint of the Quasi‐Biennial Oscillation on the Ionosphere and Thermosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) is a dominant mode of stratospheric variability and is known to modulate the variability of the ionosphere‐thermosphere (IT) system. However, the extent of its influence on the ionosphere‐thermosphere system remains uncertain due to weak signals and confounding with similar periodicities in solar flux.
D. Singh, L. P. Goncharenko, S. R. Zhang
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

Numerical Water Tracers in the Atmospheric Component of the Energy Exascale Earth System Model: Implementation and Changes in Moisture Origin

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 4, April 2026.
Abstract Numerical water tracers are implemented in the Energy Exascale Earth System Model version 2. Simulations performed with the water‐tag‐enabled model for both pre‐industrial and future greenhouse gas concentrations reveal a marked increase in the role of mid‐latitude and southern subtropical regions as exporters of atmospheric moisture—to the ...
Alexandre Audette, Nicole Feldl, Hansi Singh, Kyle Heyblom, Hailong Wang, Jesse Nusbaumer, Hui Wan, Kai Zhang   +7 more
wiley   +1 more source

Changes of the Tropical Tropopause Layer under Global Warming

Journal of Climate, 2017
Abstract This paper investigates changes in the tropical tropopause layer (TTL) in response to carbon dioxide increase and surface warming separately in an atmospheric general circulation model, finding that both effects lead to a warmer tropical tropopause. Surface warming also results in an upward shift of the tropopause.
Pu Lin, David Paynter, Yi Ming, V. Ramaswamy   +3 more
openaire   +1 more source