Rei Ueyama
YOU?
Author Swipe
View article: Atmospheric Turbulence in the Upper Troposphere and Lower Stratosphere From Airborne Observations During the DCOTSS Field Campaign
Atmospheric Turbulence in the Upper Troposphere and Lower Stratosphere From Airborne Observations During the DCOTSS Field Campaign Open
Turbulence in the upper troposphere and lower stratosphere (UTLS) plays an important role in total energy dissipation and in the transport and mixing of heat, momentum, and atmospheric constituents while also posing significant hazards to …
View article: Stratospheric Injection Lifetimes
Stratospheric Injection Lifetimes Open
Material injected to the stratosphere by volcanoes and pyrocumulonimbus clouds (pyroCbs) is observed to have different lifetimes depending on the altitude, latitude, season of the injection, and removal processes. We adopt a framework that…
View article: Examining the Linkages Between GPM Satellite‐Derived Precipitation Features Associated With Atmospheric Rivers and Rossby Wave Breaking
Examining the Linkages Between GPM Satellite‐Derived Precipitation Features Associated With Atmospheric Rivers and Rossby Wave Breaking Open
The properties of precipitation systems, defined as precipitation features (PFs), are examined in relation to atmospheric rivers (ARs) over the eastern Pacific and western US using 10 years of Global Precipitation Measurement (GPM) data fr…
View article: Hunga Tonga–Hunga Ha′apai Volcano Impact Model Observation Comparison (HTHH-MOC) project: experiment protocol and model descriptions
Hunga Tonga–Hunga Ha′apai Volcano Impact Model Observation Comparison (HTHH-MOC) project: experiment protocol and model descriptions Open
The 2022 Hunga volcanic eruption injected a significant amount of water vapor and a moderate amount of sulfur dioxide into the stratosphere, causing observable responses in the climate system. We have developed a model–observation comparis…
View article: Upper-level turbulence in the North American and Asian summer monsoon regions sampled in recent aircraft campaigns
Upper-level turbulence in the North American and Asian summer monsoon regions sampled in recent aircraft campaigns Open
View article: The Asian Summer Monsoon Chemical and Climate Impact Project (ACCLIP): An Overview
The Asian Summer Monsoon Chemical and Climate Impact Project (ACCLIP): An Overview Open
View article: On the Fate of Aerosols Produced by New Particle Formation in the Upper Troposphere and Lower Stratosphere
On the Fate of Aerosols Produced by New Particle Formation in the Upper Troposphere and Lower Stratosphere Open
New particle formation (NPF) in the upper troposphere and lower stratosphere (UTLS) has been suggested to contribute to cloud condensation nuclei in the troposphere, as well as for maintaining the stratospheric aerosol layer over the Asian…
View article: Regional contributions to the chemical composition of the Asian tropopause aerosol layer (ATAL)
Regional contributions to the chemical composition of the Asian tropopause aerosol layer (ATAL) Open
View article: Stratospheric Aerosol Plumes
Stratospheric Aerosol Plumes Open
View article: The Impacts of Gravity Waves and Wind Shear on the Lifecycle of Cirrus Clouds in the Tropical Tropopause Layer
The Impacts of Gravity Waves and Wind Shear on the Lifecycle of Cirrus Clouds in the Tropical Tropopause Layer Open
In this study, we use two‐dimensional simulations to investigate the impacts of wind shear and gravity wave temperature fluctuations on the lifecycle of thin cirrus clouds in the tropical tropopause layer (TTL). Initial conditions for the …
View article: On the Fate of Aerosols Produced by New Particle Formation in the Upper Troposphere and Lower Stratosphere
On the Fate of Aerosols Produced by New Particle Formation in the Upper Troposphere and Lower Stratosphere Open
View article: Highlighting the Impact of Anthropogenic OCS Emissions on the Stratospheric Sulfur Budget With In Situ Observations
Highlighting the Impact of Anthropogenic OCS Emissions on the Stratospheric Sulfur Budget With In Situ Observations Open
Carbonyl sulfide (OCS) is an important atmospheric sulfur species that plays a dominant role in the formation of (nonvolcanic) stratospheric sulfate aerosol in the middle stratosphere. Major uncertainties in surface sources and sinks and i…
View article: Transport by Asian Summer Monsoon Convection to the Upper Troposphere and Lower Stratosphere During ACCLIP (2022)
Transport by Asian Summer Monsoon Convection to the Upper Troposphere and Lower Stratosphere During ACCLIP (2022) Open
The Asian Summer Monsoon (ASM) has garnered attention in recent years for its impacts on the composition of the upper troposphere and lower stratosphere (UTLS) via deep convection. A recent observational effort into this mechanism, the Asi…
View article: Hunga Tonga-Hunga Ha’apai Volcano Impact Model Observation Comparison (HTHH-MOC) Project: Experiment Protocol and Model Descriptions
Hunga Tonga-Hunga Ha’apai Volcano Impact Model Observation Comparison (HTHH-MOC) Project: Experiment Protocol and Model Descriptions Open
The 2022 Hunga volcanic eruption injected a significant amount of water vapor and a moderate amount of sulfur dioxide into the stratosphere causing observable responses in the climate system. We have developed a model-observation compariso…
View article: Black Carbon Reflects Extremely Efficient Aerosol Wet Removal in Monsoonal Convective Transport
Black Carbon Reflects Extremely Efficient Aerosol Wet Removal in Monsoonal Convective Transport Open
View article: Evolution of the Climate Forcing During the Two Years After the Hunga Tonga‐Hunga Ha'apai Eruption
Evolution of the Climate Forcing During the Two Years After the Hunga Tonga‐Hunga Ha'apai Eruption Open
We calculate the climate forcing for the 2 ys after the 15 January 2022, Hunga Tonga‐Hunga Ha'apai (Hunga) eruption. We use satellite observations of stratospheric aerosols, trace gases and temperatures to compute the tropopause radiative …
View article: Airborne observations of upper troposphere and lower stratosphere composition change in active convection producing above-anvil cirrus plumes
Airborne observations of upper troposphere and lower stratosphere composition change in active convection producing above-anvil cirrus plumes Open
Tropopause-overshooting convection in the midlatitudes provides a rapid transport pathway for air from the lower troposphere to reach the upper troposphere and lower stratosphere (UTLS) and can result in the formation of above-anvil cirrus…
View article: Evolution of the Climate Forcing During the Two Years after the Hunga Tonga-Hunga Ha'apai Eruption
Evolution of the Climate Forcing During the Two Years after the Hunga Tonga-Hunga Ha'apai Eruption Open
We calculate the climate forcing for the two years after the January 15, 2022, Hunga Tonga-Hunga Ha’apai (Hunga) eruption. We use satellite observations of stratospheric aerosols, trace gases and temperatures to compute the tropopause radi…
View article: Evolution of the Climate Forcing During the Two Years after the Hunga Tonga-Hunga Ha'apai Eruption
Evolution of the Climate Forcing During the Two Years after the Hunga Tonga-Hunga Ha'apai Eruption Open
The Jan. 15, 2022, Hunga eruption increased aerosols and H2O in the southern hemisphere stratosphere and then dispersed throughout 2022/3.• Stratospheric water vapor, ozone, temperature, and aerosol optical depth contribute to the change i…
View article: East Asian summer monsoon delivers large abundances of very short-lived organic chlorine substances to the lower stratosphere
East Asian summer monsoon delivers large abundances of very short-lived organic chlorine substances to the lower stratosphere Open
Deep convection in the Asian summer monsoon is a significant transport process for lifting pollutants from the planetary boundary layer to the tropopause level. This process enables efficient injection into the stratosphere of reactive spe…
View article: How do wind shear and gravity waves affect the evolution of optically thin cirrus in the tropical tropopause layer?
How do wind shear and gravity waves affect the evolution of optically thin cirrus in the tropical tropopause layer? Open
Past investigations have shown that gravity waves can affect both when/where cirrus form in the Tropical Tropopause Layer (TTL) and the ice concentrations produced by homogeneous freezing nucleation. Here, we use high-resolution two-…
View article: The Impact of Gravity Waves on the Evolution of Tropical Anvil Cirrus Microphysical Properties
The Impact of Gravity Waves on the Evolution of Tropical Anvil Cirrus Microphysical Properties Open
Anvil cirrus generated by deep convection covers large fractions of the tropics and has important impacts on the Earth's radiation budget and climate. In situ measurements made with high‐altitude aircraft indicate a rapid transition in ice…
View article: Comment on egusphere-2023-2603
Comment on egusphere-2023-2603 Open
Abstract. Tropopause-overshooting convection in the midlatitudes provides a rapid transport pathway for air from the lower troposphere to reach the upper troposphere and lower stratosphere (UTLS), and can result in the for…
View article: Detailed Examination of Upper Troposphere Lower Stratosphere Composition Change from DCOTSS Airborne Observations of Active Convection on 31 May 2022
Detailed Examination of Upper Troposphere Lower Stratosphere Composition Change from DCOTSS Airborne Observations of Active Convection on 31 May 2022 Open
Tropopause-overshooting convection in the midlatitudes provides a rapid transport pathway for air from the lower troposphere to reach the upper troposphere and lower stratosphere (UTLS), and can result in the formation of above-anvil cirru…
View article: The Estimated Climate Impact of the Hunga Tonga‐Hunga Ha'apai Eruption Plume
The Estimated Climate Impact of the Hunga Tonga‐Hunga Ha'apai Eruption Plume Open
On 15 January 2022, the Hunga Tonga‐Hunga Ha'apai (HT) eruption injected SO 2 and water into the middle stratosphere. The SO 2 is rapidly converted to sulfate aerosols. The aerosol and water vapor anomalies have persisted in the Southern H…
View article: Extreme Altitudes of Stratospheric Hydration by Midlatitude Convection Observed During the DCOTSS Field Campaign
Extreme Altitudes of Stratospheric Hydration by Midlatitude Convection Observed During the DCOTSS Field Campaign Open
Water vapor's contribution to Earth's radiative forcing is most sensitive to changes in its lower stratosphere concentration. One recognized pathway for rapid increases in stratospheric water vapor is tropopause‐overshooting convection. Si…
View article: Convective Impact on the Global Lower Stratospheric Water Vapor Budget
Convective Impact on the Global Lower Stratospheric Water Vapor Budget Open
Water vapor in the stratosphere is primarily controlled by temperatures in the tropical upper troposphere and lower stratosphere. However, the direct impact of deep convection on the global lower stratospheric water vapor budget is still a…
View article: Chemical composition and processing of aerosol particles in the Asian Tropopause Aerosol Layer inferred from airborne measurements during the ACCLIP campaign
Chemical composition and processing of aerosol particles in the Asian Tropopause Aerosol Layer inferred from airborne measurements during the ACCLIP campaign Open
The presence of aerosol particles in the upper troposphere/lower stratosphere (UTLS) region plays an important role for the Earth’s radiative balance and the formation of cirrus clouds. In recent years, a substantial amount of organi…
View article: An Examination of ACCLIP (2022) Airborne Observations in the Context of their Trajectory-derived Convective Influence
An Examination of ACCLIP (2022) Airborne Observations in the Context of their Trajectory-derived Convective Influence Open
The Asian summer monsoon (ASM) has long been known as a weather system, but only recently has its role in atmospheric composition come to be explored in detail. During boreal summer, an anticyclone forms in the upper troposphere and …
View article: The Dynamical Background to the 2022 Asian Summer Monsoon Chemical and Climate Impacts Project (ACCLIP)
The Dynamical Background to the 2022 Asian Summer Monsoon Chemical and Climate Impacts Project (ACCLIP) Open
The Asian summer monsoon Chemical and Climate Impact Project (ACCLIP) used the NSF/NCAR Gulfstream V (GV) research aircraft, the NASA WB-57f research aircraft, the Korean NARA King Air, and a broad set of balloon launches to investigate at…