Philipp Joppe
A5022964385- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Atmospheric aerosols and clouds
- Arctic and Antarctic ice dynamics
- Climate variability and models
- Ionosphere and magnetosphere dynamics
- Geophysics and Gravity Measurements
- Cryospheric studies and observations
- Meteorological Phenomena and Simulations
- Semiconductor Lasers and Optical Devices
- Vehicle emissions and performance
- Air Quality Monitoring and Forecasting
- Photonic and Optical Devices
- Earthquake Detection and Analysis
- Isotope Analysis in Ecology
- Catalytic Processes in Materials Science
- Copper Interconnects and Reliability
Max Planck Institute for Chemistry
2024-2025
Johannes Gutenberg University Mainz
2022-2025
Max Planck Society
2024
Abstract New particle formation (NPF) in the tropical upper troposphere is a globally important source of atmospheric aerosols 1–4 . It known to occur over Amazon basin, but nucleation mechanism and chemical precursors have yet be identified 2 Here we present comprehensive situ aircraft measurements showing that extremely low-volatile oxidation products isoprene, particularly certain organonitrates, drive NPF Amazonian troposphere. The organonitrates originate from OH-initiated isoprene...
Abstract. Global warming is amplified in the Arctic. However, numerical models struggle to represent key processes that determine Arctic weather and climate. To collect data help constrain models, HALO–(𝒜𝒞)3 aircraft campaign was conducted over Norwegian Greenland seas, Fram Strait, central Ocean March April 2022. The focused on one specific challenge posed by namely reasonable representation of transformations air masses during their meridional transport into out via northward moist-...
Abstract. The global warming is amplified in the Arctic. To collect data that help to constrain weather and climate models, which often do not realistically represent enhanced Arctic warming, HALO-(AC)³ aircraft campaign was conducted March April 2022 over Norwegian Greenland Seas, Fram Strait, central Ocean. Observations were made areas of open ocean, marginal sea ice zone, ice. Two low-flying one long-range, high-altitude research have been employed. Whenever possible, three flown...
Abstract. In this study, we present a fully automated aerosol mass spectrometer (AMS) that is operated during regular passenger aircraft flights in the CARIBIC (Civil Aircraft for Regular Investigation of Atmosphere Based on an Instrument Container) part European Research Infrastructure IAGOS (In-service Global Observing System – www.iagos.org). The instrument, termed CARIBIC-AMS, able to measure concentration non-refractory species, namely sulfate, nitrate, ammonium, and organics, particle...
Abstract Lightning is the most important source of nitric oxide (NO) in tropical upper troposphere and controls formation tropospheric ozone (). It associated with deep convection occurs mostly over continents. The Chemistry Atmosphere Field Experiment Pacific (CAFE Pacific) was conducted early 2024 from Cairns, Australia, taking airborne measurements across Australian continent surrounding maritime regions. Based on cloud top properties, lightning data situ observations NO, carbon monoxide,...
The chemical composition, especially of aerosol particles, in the extratropical upper troposphere and lower stratosphere (exUTLS) plays a crucial role radiation budget atmosphere. This composition is affected by large-scale dynamics troposphere, additionally small-scale processes. effects particle number concentration as well lowermost (exLMS) are major research topic recent years. measurements presented this study were taken during TPEx campaign (Tropopause gradients mixing Experiment)...
The extratropical transition layer (ExTL), located above the tropopause, is an atmospheric region characterized by vertical gradients in composition, transitioning between tropospheric and deeper stratospheric properties. Since tropopause constitutes a mixing barrier under adiabatic conditions, existence of ExTL evidence diabatic processes influencing this region.Although not usually thought to occur cirrus clouds can be cause via radiative latent (microphysical) effects. Here we present two...
Convective overshoot can result in irreversible mixing of air from the troposphere into stratosphere, thereby influencing radiation balance this climate-sensitive region by altering greenhouse gas concentrations, particularly water vapor, and inducing ice aerosol particles stratosphere. This study examines cloud microphysical properties trace signatures associated with a convective event observed during TPex (TropoPause composition gradients Experiment) campaign June 2024 over southern...
Abstract. The HALO–(𝒜𝒞)3 aircraft campaign was carried out in March and April 2022 over the Norwegian Greenland seas, Fram Strait, central Arctic Ocean. Three research – High Altitude Long Range Research Aircraft (HALO), Polar 5, 6 performed 54 partly coordinated flights on 23 flight days areas of open ocean, marginal sea ice zone (MIZ), ice. general objective to quantify evolution air mass properties during moist warm-air intrusions (WAIs) cold-air outbreaks (CAOs). To obtain a...
Abstract. Aerosol particles in the extratropical upper troposphere and lower stratosphere (exUTLS) play a crucial role for Earth‘s radiative budget. High temporal spatial resolution measurements exUTLS are important to study mixing processes their climate impact. Here, we present from TPEx mission (Tropopause composition gradients Experiment) an aircraft June 2024 over Europe. The measurement platform, Learjet 35A, was equipped with in-situ trace gas aerosol filter samplers offline analysis....
Abstract. The HALO–(AC)3 aircraft campaign was carried out in March and April 2022 over the Norwegian Greenland Seas, Fram Strait, central Arctic Ocean. Three research aircraft, High Altitude Long Range Research Aircraft (HALO), Polar 5, 6, performed 54 partly coordinated flights on 23 flight days areas of open ocean, marginal sea ice zone (MIZ), ice. general objective to quantify evolution air mass properties during moist warm intrusions (WAIs) cold outbreaks (CAOs). To gain a comprehensive...
Abstract. The chemical composition of the upper troposphere/lower stratosphere region (UTLS) is influenced by horizontal transport air masses, vertical within convective systems and warm conveyor belts, rapid turbulent mixing, as well photochemical production or loss species. This results in formation extratropical transition layer (ExTL), which defined structure CO has been studied until now mostly means trace gas correlations. Here, we extend analysis to include aerosol particles derive...
Lightning is the most important source of nitric oxide (NO) in tropical upper troposphere and controls formation tropospheric ozone (O3). It associated with deep convective processes occurs mostly (∼90%) over continents. The Chemistry Atmosphere Field Experiment Pacific (CAFE Pacific) was conducted early 2024 from Cairns, Australia, taking airborne measurements across Australian continent surrounding maritime regions. Based on cloud top properties, lightning data situ observations NO, O3...
Abstract. The composition of the upper troposphere/lower stratosphere region (UTLS) is influenced by horizontal transport, vertical transport within convective systems and warm conveyor belts, rapid turbulent mixing, as well photochemical production or loss species. This results in formation extratropical transition layer (ExTL), which has been defined structure CO profiles studied now mostly means trace gas correlations. Here, we extend analysis to aerosol particles derive ozone sulfate...
The composition of the upper troposphere/lower stratosphere region (UTLS) is influenced by long-range or regional transport in troposphere and stratosphere, vertical within convective systems warm conveyor belts, rapid turbulent mixing, as well photochemical production loss species. This results formation extratropical transition layer, which has been defined structure CO profiles studied now mostly means trace gas correlations. Here, we extend analysis to aerosol particles derive ozone...
<p><span>The lowermost stratosphere (LMS) plays an important role in determining the Earth's energy budget. </span><span>The chemical species that absorb and re-emit radiation LMS have a large spatial temporal variability, which is controlled by mixing transport processes. </span><span>T</span><span>he troposphere...
<p><span>The extratropical transition layer or ExTL has been recognized about 20 years ago as part of the upper troposphere / lower stratosphere (UTLS) extratropics. This region encompasses tropopause and shows chemical characteristics both, troposphere. Tracer-tracer correlations show this ambiguous character integral effect numerous different processes contributing to transport subsequent mixing. The exhibits a composition which is remarkably distinct from...