Max Planck Institute for Chemistry

Biomass Burning in Australia: No Evidence for Carbonyl Sulfide (OCS) Enhancement in Fire Plumes From In‐Situ Measurements During SouthTRAC

Abstract Determining the atmospheric abundance and the emission sources of carbonyl sulfide (OCS) plays a crucial role for the sulfur budget in the atmosphere. In addition to its main anthropogenic and biogenic sources, biomass burning is assumed to be an essential, but not well...

Linking molecular composition of organic aerosols to reactive oxygen species formation using an MCR-VK framework

Abstract. Reactive oxygen species (ROS) formation by atmospheric fine particulate matter (PM) is widely implicated in adverse health effects, yet the molecular determinants of particle-level ROS formation remain poorly constrained, largely due to the chemical complexity of organi...

Nd isotopes as a paleocirculation tracer: consideration of sedimentary context and assessment through a north-south Atlantic transect

Authigenic neodymium (Nd) isotope ratios have been extensively used over the past two decades to reconstruct past changes in the global ocean circulation. Nevertheless, their effectiveness as a water mass tracer is currently strongly disputed based on the potential for modificati...

Multidisciplinary insights into Late Pleistocene-Holocene palaeoenvironment at the archaeo-palaeontological Loltún Cave site in Yucatán, Mexico

Abstract A lack of well-dated archaeological and palaeontological sequences containing proxy-based palaeoenvironmental information has hindered the reconstruction of long-term human-biodiversity interactions in Mexico. Here, we re-evaluate the stratigraphy of the Huechil Chamber...

Addendum: Magnetic field screening in hydrogen-rich high-temperature superconductors

In our paper 1 , we studied the magnetic response of H 3 S and LaH 10 superconductors to an applied magnetic field using Superconducting Quantum Interference Device (SQUID) magnetometry. Prof. Hirsch, in his Matters Arising entitled “On the Author Correction to “Magnetic field sc...

Hot-springs through time, and how to find them

Hot-springs have fascinated geologists including James Hutton for centuries. Here we synthesise data collected over timescales from centuries to days to reveal rules governing hot-springs, including where and when they occur. Data reveal waters dominantly sourced from the surface...

Size‐Resolved Particle Effective Density in the Free Troposphere at Mt. Hua, China: Influence of Chemical Aging and Sources

Abstract Effective density ( ρ eff ) is a key physical property of atmospheric particles, yet it has rarely been investigated in free tropospheric environments. It is largely determined by chemical compositions and particle morphology, providing valuable insights into atmospheric...

A new balloon-borne system for measuring the vertical variability of aerosol optical properties using low-cost sensors

This study presents a newly developed balloon-borne AeroSonde system equipped with calibrated low-cost optical particulate matter sensors (SPS30) for vertically resolved aerosol optical measurements. Calibration of the sensors against reference instruments (Aurora 4000 nephelomet...

Increasing nitrogen loading in the Gulf of Mexico undermines coral reef resilience

The ongoing global decline of coral reefs underscores the need to identify key mechanisms driving reef deterioration. The Flower Garden Banks (FGB) reefs in the northern Gulf are widely regarded as some of the healthiest in the continental United States, but recent disease outbre...

Upward transport and segregation of ice-nucleating particles in deep convective clouds

Abstract. Ice-nucleating particles (INPs) play a crucial role in Earth’s weather and climate by influencing cloud properties and precipitation. However, their abundance in the free troposphere, vertical distribution, and transport mechanisms are not well-characterized. This study...

Sea surface warming suppresses primary sea spray aerosol number production

Abstract. Sea spray aerosol (SSA) influences climate through direct and indirect interactions with radiation. However, the magnitudes of these interactions remain poorly constrained, in part due to a lack of understanding of the influences of sea surface temperature (SST) on SSA...

Buffering of atmospheric nanoparticle growth by temperature-dependent shifts in molecular composition, volatility and diffusivity

Abstract. Aerosols have a profound influence on climate and human health, but new particle formation in the atmosphere has remained a scientific conundrum. In particular, the growth rates of atmospheric nanoparticles are often smaller and less dependent on condensable vapor conce...

The influence of El Niño-Southern Oscillation on cool-season precipitation variability in the arid Middle East

Abstract. Interannual variability in precipitation across the Middle East is of high societal and environmental relevance given the region's arid climate and limited water resources. While previous studies have linked the El Niño-Southern Oscillation (ENSO) to interannual precipi...

Impact of South American biomass burning emissions on elevated South Atlantic upper tropospheric ozone

Abstract. During the SOUTHTRAC mission in autumn 2019 elevated mixing ratios of carbon monoxide (CO), carbon dioxide CO2, nitrogen oxide (NO) and total reactive nitrogen NOy were observed during a flight at the beginning of October. The potential plume extended over more than 100...