Ingo Wohltmann
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View article: How ENSO affects ozone, RHi and transport dynamics at the UTLS above Palau and the Tropical West Pacific
How ENSO affects ozone, RHi and transport dynamics at the UTLS above Palau and the Tropical West Pacific Open
The Upper Troposphere/Lower Stratosphere (UT/LS) above the Tropical West Pacific (TWP) is an important pathway into the global stratosphere, influencing stratospheric chemistry and atmospheric dynamics overall. Its composition and dynamics…
View article: ENSO impact on mid-tropospheric composition above the Tropical Western Pacific via air mass transport
ENSO impact on mid-tropospheric composition above the Tropical Western Pacific via air mass transport Open
The Tropical West Pacific (TWP) is the key entry point of air into the stratosphere during Northern Hemispheric winter. Thus, the local air composition can influence global atmospheric chemistry and dynamics. Its interannual variability is…
View article: Air Mass Transport to the UTLS above the Tropical West Pacific
Air Mass Transport to the UTLS above the Tropical West Pacific Open
The Tropical West Pacific (TWP) is the key entry point of air into the stratosphere during Northern Hemispheric winter. Our previous work showed how transport to the TWP troposphere is modulated by the movement of the Intertropical Converg…
View article: The Chemical Effect of Increased Water Vapor From the Hunga Tonga‐Hunga Ha'apai Eruption on the Antarctic Ozone Hole
The Chemical Effect of Increased Water Vapor From the Hunga Tonga‐Hunga Ha'apai Eruption on the Antarctic Ozone Hole Open
The eruption of the Hunga Tonga‐Hunga Ha'apai volcano on 15 January 2022 was one of the most explosive eruptions of the last decades. The amount of water vapor injected into the stratosphere was unprecedented in the observational record, i…
View article: The effect of increased water vapor from the Hunga Tonga-Hunga Ha'apai eruption on the Antarctic ozone hole
The effect of increased water vapor from the Hunga Tonga-Hunga Ha'apai eruption on the Antarctic ozone hole Open
The eruption of the Hunga Tonga-Hunga Ha’apai volcano on 15 January 2022 was one of the most explosive eruptions of the last decades. The unprecedented amount of water vapor injected into the stratosphere increased the stratospheric water …
View article: Comment on egusphere-2023-1518
Comment on egusphere-2023-1518 Open
Abstract. Due to the unique local air chemistry, the transport history of tropospheric air masses above the remote tropical West Pacific (TWP) is reflected by local ozone (O3) and relative humidity (RH) characteristics. In boreal winter, t…
View article: Air Mass Transport to the Tropical West Pacific Troposphere inferred from Ozone and Relative Humidity Balloon Observations above Palau
Air Mass Transport to the Tropical West Pacific Troposphere inferred from Ozone and Relative Humidity Balloon Observations above Palau Open
Due to the unique local air chemistry, the transport history of tropospheric air masses above the remote tropical West Pacific (TWP) is reflected by local ozone (O3) and relative humidity (RH) characteristics. In boreal winter, the TWP is …
View article: ATLAS Backward Trajectory Dataset for the Palau Atmospheric Observatory Balloon-borne ozonesonde record 2016-2019
ATLAS Backward Trajectory Dataset for the Palau Atmospheric Observatory Balloon-borne ozonesonde record 2016-2019 Open
The ATLAS Backward Trajectory Dataset for the Palau Atmospheric Observatory (PAO) Balloon-borne ozonesonde record V1.0 provides backward trajectory data in NetCDF format calculated by the transport module of the Lagrangian Chemistry and Tr…
View article: ATLAS Backward Trajectory Dataset for the Palau Atmospheric Observatory Balloon-borne ozonesonde record 2016-2019
ATLAS Backward Trajectory Dataset for the Palau Atmospheric Observatory Balloon-borne ozonesonde record 2016-2019 Open
The ATLAS Backward Trajectory Dataset for the Palau Atmospheric Observatory (PAO) Balloon-borne ozonesonde record V1.0 provides backward trajectory data in NetCDF format calculated by the transport module of the Lagrangian Chemistry and Tr…
View article: Model calculations of the contribution of tropospheric SO2 to the stratospheric aerosol layer
Model calculations of the contribution of tropospheric SO2 to the stratospheric aerosol layer Open
The stratospheric aerosol layer is important for stratospheric chemistry, climate change and in geo-engineering. Yet the processes governing the transport of sulfur to the stratosphere are poorly quantified. We present model calculations o…
View article: Neural representation of the stratospheric ozone chemistry
Neural representation of the stratospheric ozone chemistry Open
In climate modeling, the stratospheric ozone layer is typically only considered in a highly simplified form due to computational constraints. For climate projections, it would be of advantage to include the mutual interactions between stra…
View article: Transport parameterization of the Polar SWIFT model (version 2)
Transport parameterization of the Polar SWIFT model (version 2) Open
The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in general circulation models (GCMs) and earth system models (ESMs) to enable the s…
View article: Reply on RC3
Reply on RC3 Open
Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in general circulation models (GCMs) and earth system models (ESMs) to en…
View article: Reply to editors comment from prereview gmd-2022-13
Reply to editors comment from prereview gmd-2022-13 Open
Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in general circulation models (GCMs) and earth system models (ESMs) to en…
View article: Reply on RC1
Reply on RC1 Open
Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in General Circulation Models (GCMs) and Earth System Models (ESMs) to en…
View article: Reply on RC2
Reply on RC2 Open
Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in general circulation models (GCMs) and earth system models (ESMs) to en…
View article: Comment on gmd-2022-13
Comment on gmd-2022-13 Open
Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in General Circulation Models (GCMs) and Earth System Models (ESMs) to en…
View article: Comment on gmd-2022-13
Comment on gmd-2022-13 Open
Abstract. The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in general circulation models (GCMs) and earth system models (ESMs) to en…
View article: Comment on gmd-2022-13
Comment on gmd-2022-13 Open
The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in General Circulation Models (GCMs) and Earth System Models (ESMs) to enable the s…
View article: Transport parameterization of the Polar SWIFT model (version 2)
Transport parameterization of the Polar SWIFT model (version 2) Open
The Polar SWIFT model is a fast scheme for calculating the chemistry of stratospheric ozone depletion in the polar vortex in winter. It is intended for use in General Circulation Models (GCMs) and Earth System Models (ESMs) to enable the s…
View article: SWIFT-AI: Significant Speed-up in Modelling the Stratospheric Ozone Layer
SWIFT-AI: Significant Speed-up in Modelling the Stratospheric Ozone Layer Open
<p>Common representations of the stratospheric ozone layer in climate modeling are widely considered only in a very simplified way. Neglecting the mutual interactions of ozone with atmospheric temperature and dynamics has the effect …
View article: Chemical Evolution of the Exceptional Arctic Stratospheric Winter 2019/2020 Compared to Previous Arctic and Antarctic Winters
Chemical Evolution of the Exceptional Arctic Stratospheric Winter 2019/2020 Compared to Previous Arctic and Antarctic Winters Open
The winter 2019/2020 showed the lowest ozone mixing ratios ever observed in the Arctic winter stratosphere. It was the coldest Arctic stratospheric winter on record and was characterized by an unusually strong and long‐lasting polar vortex…
View article: Origin of Tropospheric Air Masses in the Tropical West Pacific and related transport processes inferred from balloon-borne Ozone and Water Vapour observations from Palau
Origin of Tropospheric Air Masses in the Tropical West Pacific and related transport processes inferred from balloon-borne Ozone and Water Vapour observations from Palau Open
<p>Motivated by previous measurements of very low tropospheric ozone concentrations in the Tropical West Pacific (TWP) and the implied low oxidizing capacity of this key region for transport into the stratosphere in boreal winter (e.…
View article: The sensitivity of chemical loss of Arctic ozone to future levels of GHGs
The sensitivity of chemical loss of Arctic ozone to future levels of GHGs Open
<p>The chemical loss of ozone during Arctic winter and spring due to anthropogenic halogens is driven by temperature at high latitudes, with more loss occurring during cold years with meteorological conditions that are favourable for…
View article: Near&#8208;Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020
Near‐Complete Local Reduction of Arctic Stratospheric Ozone by Severe Chemical Loss in Spring 2020 Open
<p>In the Antarctic ozone hole, ozone mixing ratios have been decreasing to extremely low values of 0.01&#8211;0.1 ppm in nearly all spring seasons since the late 1980s, corresponding to 95&#8211;99% local chemical loss. In c…
View article: Reviewer comment on acp-2021-11
Reviewer comment on acp-2021-11 Open
The features of dynamical processes and changes in the ozone layer in the Arctic stratosphere during the winter-spring season 2019–2020 are analyzed using ozonesondes, reanalysis data and numerical experiments with a chemistry-transport mo…
View article: Origin of Tropospheric Air Masses in the Tropical West Pacific identified by Balloon-borne Ozone and Water Vapor Measurements from Palau
Origin of Tropospheric Air Masses in the Tropical West Pacific identified by Balloon-borne Ozone and Water Vapor Measurements from Palau Open
Motivated by previous measurements of very low tropospheric ozone concentrations in the Tropical West Pacific (TWP) and the implied low oxidizing capacity of this key region for transport into the stratosphere (e.g. Rex et al. 2014), we se…
View article: Pollution trace gas distributions and their transport in the Asian monsoon upper troposphere and lowermost stratosphere during the StratoClim campaign 2017
Pollution trace gas distributions and their transport in the Asian monsoon upper troposphere and lowermost stratosphere during the StratoClim campaign 2017 Open
We present the first high-resolution measurements of pollutant trace gases in the Asian summer monsoon upper troposphere and lowermost stratosphere (UTLS) from the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) dur…