Results 51 to 60 of about 10,329 (228)

On the abundance of non-cometary HCN on Jupiter

, 2010
Using one-dimensional thermochemical/photochemical kinetics and transport models, we examine the chemistry of nitrogen-bearing species in the Jovian troposphere in an attempt to explain the low observational upper limit for HCN.
Achterberg, Allen, Allen, Atkinson, Atkinson, Atkinson, Atreya, Aubrey Sperier, Bar-Nun, Bar-Nun, Barshay, Baulch, Baulch, Baulch, Bjoraker, Bosco, Bossard, Burcat, Burgdorf, Bétrémieux, Bétrémieux, Bézard, Bézard, Bézard, Cadle, Carlson, Channon Visscher, Chase, Cheng, Cravens, Curtis, Dagaut, Davidson, Davis, De La Haye, de Pater, de Pater, Demissy, Desch, Drossart, Dunn, Edgington, Edgington, Fagerström, Fegley Jr., Fegley, Jr., Fegley, Jr., Ferris, Ferris, Ferris, Ferris, Ferris, Ferris, Flasar, Fletcher, Folkner, Fouchet, Gardner, Gardner, Gehring, Gibson, Gladstone, Granik, Greathouse, Greenspan, Griffith, Griffith, Griffith, Groth, Groth, Hack, Hennig, Horne, Hunten, Hwang, Imanaka, Irwin, Jodkowski, Julianne I. Moses, Kaye, Kaye, Kaye, Kaye, Keane, Kuhn, Kunde, Lammertsma, Landry, Lara, Lebonnois, Lee, Lellouch, Lellouch, Lellouch, Lellouch, Lellouch, Lesclaux, Lewis, Lewis, Lewis, Lewis, Lewis, Liang, Liang, Lindal, Lippincott, Little, Lodders, Lovas, Marten, Matthews, Matthews, McNesby, Michael, Miller, Miller, Monks, Moreno, Moreno, Moses, Moses, Moses, Moskaleva, Nesbitt, Niemann, Nishi, Nixon, Orton, Podolak, Prinn, Prinn, Prinn, Raulin, Romani, Scala, Seiff, Simon-Miller, Smith, Sromovsky, Sromovsky, Stribling, Strobel, Strobel, Sudarsky, Thomas C. Keane, Tokunaga, Toupance, Vaghjiani, Vervack, Jr., Visscher, Visscher, von Zahn, Vuitton, Vuitton, Vuitton, Waite, Jr., Waite, Jr., Waschewsky, Weisstein, West, Wildt, Williams, Woeller, Wong, Wong, Wong, Wong, Yelle, Yelle, Yung   +169 more
core   +1 more source

The Impact of Oceanic Feedbacks on Stratosphere‐Troposphere Coupling in an Idealized Model

Journal of Geophysical Research: Atmospheres, 2023
AbstractStratospheric temperature perturbations (STPs) caused by for example, variations in stratospheric ozone, are an important driver of changes in tropospheric dynamics, particularly pertinent to the long‐term climatic evolution of the Southern Hemisphere. However, the impact of ocean feedbacks on this interaction has not been fully examined.
Natasha E. Trencham, Arnaud Czaja, Joanna D. Haigh   +2 more
openaire   +1 more source

Impact of small‐scale gravity waves on tracer transport

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We extend a gravity wave (GW) parametrization to calculate the tracer transport due to the GW–Stokes drift and next‐order effects, where the approach is validated by comparing coarse‐resolution simulations with parametrized GWs to high‐resolution, wave‐resolving reference simulations.
Irmgard Knop, Stamen Dolaptchiev, Ulrich Achatz   +2 more
wiley   +1 more source

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).
Cagnazzo, Chiara, Cairo, Francesco, D'Amato, Francesco, Di Donfrancesco, Guido, Fierli, Federico, Manzini, Elisa, Palazzi, Elisa, Ravegnani, Fabrizio, Schiller, Cornelius, Volk, C.-Michael   +9 more
core   +5 more sources

The 1986–1989 ENSO cycle in a chemical climate model [PDF]

Atmospheric Chemistry and Physics, 2006
A pronounced ENSO cycle occurred from 1986 to 1989, accompanied by distinct dynamical and chemical anomalies in the global troposphere and stratosphere.
S. Brönnimann, M. Schraner, B. Müller, A. Fischer, D. Brunner, E. Rozanov, E. Rozanov, T. Egorova   +7 more
doaj  

Tropopause-level planetary wave source and its role in two-way troposphere–stratosphere coupling [PDF]

Weather and Climate Dynamics, 2020
Atmospheric planetary waves play a fundamental role in driving stratospheric dynamics, including sudden stratospheric warming (SSW) events. It is well established that the bulk of the planetary wave activity originates near the surface.
L. Boljka, T. Birner
doaj   +1 more source

A mechanistic model study of slowly propagating coupled stratosphere‐troposphere variability [PDF]

Journal of Geophysical Research: Atmospheres, 2000
Observational studies reveal the oscillatory nature of coupled stratosphere‐troposphere variability, which is characterized by a slowly downward propagating anomalous zonal‐mean zonal wind during the winter. The term “slowly” is employed compared to the rapid variation associated with stratospheric sudden warmings. In fact, strong stratospheric warming
Kunihiko Kodera, Yuhji Kuroda
openaire   +1 more source

Assessing the impact of model biases on subseasonal forecast skill

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Relaxation experiments where the nudging was performed towards bias‐corrected integrations of the same model display significantly improved skill at weeks 3 and 4, particularly in the northern extratropics. This indicates that there is a large potential for improving dynamical subseasonal forecasting skill by improved treatment of model biases.
Frédéric Vitart, Magdalena Balmaseda
wiley   +1 more source

Using a causal effect network approach to quantify the impact of ENSO teleconnections on summer monsoon precipitation over the Himalayas and key regional circulations

Quarterly Journal of the Royal Meteorological Society, EarlyView.
We quantified the causal effect (CE) of linkages between four monthly climate indices ENSO, SMHP, RWC, and MHC for 1940–2022 with a time lag of one month. The results show CE values from (1) ENSO to SMHP of −0.33$$ -0.33 $$ to −0.44$$ -0.44 $$ (i.e., a one standard deviation (SD) increase in ENSO causes a decrease in SMHP of −0.33$$ -0.33 $$ to −0.44$$
Grzegorz Muszynski, Andrew Orr, Indrani Roy, Giorgia Di Capua, Hamish D. Pritchard, J. Scott Hosking   +5 more
wiley   +1 more source

Performance evaluation of regional weather predictions with the Model for Prediction Across Scales – Atmosphere (MPAS‐A) over the Maritime Continent

Quarterly Journal of the Royal Meteorological Society, EarlyView.
As part of the ongoing efforts to develop next‐generation forecasting systems at the Meteorological Service Singapore, this study presents the setup and evaluation of the SINGV_NG(MPAS) system. Overall, the SINGV_NG(MPAS) system outperforms European Centre for Medium‐Range Weather Forecasts (ECMWF) deterministic forecasts in capturing heavy rainfall ...
I‐Han Chen, Pratiman Patel, Kalli Furtado, Wei Wang, Zhiquan Liu, Dale Barker, Jimy Dudhia, Hugh Zhang   +7 more
wiley   +1 more source