A5007491799- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Atmospheric Ozone and Climate
- Atmospheric and Environmental Gas Dynamics
- Environmental and biological studies
- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Air Quality Monitoring and Forecasting
- Fluid Dynamics and Turbulent Flows
- Lichen and fungal ecology
- Indoor Air Quality and Microbial Exposure
- Turbomachinery Performance and Optimization
- Quantum and electron transport phenomena
- Quantum many-body systems
- Remote Sensing in Agriculture
- Climate variability and models
- Geography and Environmental Studies
- Cold Atom Physics and Bose-Einstein Condensates
- Air Quality and Health Impacts
- Heat Transfer Mechanisms
- Bryophyte Studies and Records
- Water Quality Monitoring and Analysis
- Fire effects on ecosystems
- Meteorological Phenomena and Simulations
- Oxidative Organic Chemistry Reactions
Max Planck Institute for Chemistry
2016-2025
German Meteorological Service
2024-2025
Max Planck Institute for Biogeochemistry
2015-2021
University of Bonn
2016-2020
National Institute of Amazonian Research
2015-2018
Norwegian University of Science and Technology
2014
Max Planck Society
2013
Alfried Krupp Hospital
2006
Universität der Bundeswehr München
1999-2002
University of Duisburg-Essen
1998
Abstract. The Amazon Basin plays key roles in the carbon and water cycles, climate change, atmospheric chemistry, biodiversity. It has already been changed significantly by human activities, more pervasive change is expected to occur coming decades. therefore essential establish long-term measurement sites that provide a baseline record of present-day climatic, biogeochemical, conditions will be operated over decades monitor region, as perturbations increase future. Tall Tower Observatory...
Abstract. Size-resolved long-term measurements of atmospheric aerosol and cloud condensation nuclei (CCN) concentrations hygroscopicity were conducted at the remote Amazon Tall Tower Observatory (ATTO) in central Basin over a 1-year period full seasonal cycle (March 2014–February 2015). The provide climatology CCN properties characteristic Amazonian rain forest site.The continuously cycled through 10 levels supersaturation (S = 0.11 to 1.10 %) span particle size range from 20 245 nm. mean...
Abstract. The Amazonian rainforest is a large tropical ecosystem, which one of the last pristine continental terrains. This ecosystem ideally located for study diel and seasonal behaviour biogenic volatile organic compounds (BVOCs) in absence local human interference. In this study, we report first atmospheric BVOC measurements at Tall Tower Observatory (ATTO) site, central Amazonia. A quadrupole proton-transfer-reaction mass spectrometer (PTR-MS), with seven ambient air inlets, positioned...
Abstract. Size-resolved measurements of atmospheric aerosol and cloud condensation nuclei (CCN) concentrations hygroscopicity were conducted over a full seasonal cycle at the remote Amazon Tall Tower Observatory (ATTO, March 2014–February 2015). In preceding companion paper, we presented annually seasonally averaged data parametrizations (Part 1; Pöhlker et al., 2016a). present study 2), analyze key features implications CCN properties for following characteristic conditions: Empirically...
The hydroxyl radical (OH) removes most atmospheric pollutants from air. loss frequency of OH radicals due to the combined effect all gas-phase reactive species is a measureable quantity termed total reactivity. Here we present reactivity observations in pristine Amazon rainforest air, as function season, time-of-day and height (0-80 m). Total low during wet (10 s(-1)) high dry season (62 s(-1)). Comparison individually measured trace gases reveals strong variation unaccounted for reactivity,...
Abstract. The Amazon rainforest is a sensitive ecosystem experiencing the combined pressures of progressing deforestation and climate change. Its atmospheric conditions oscillate between biogenic biomass burning (BB) dominated states. further represents one few remaining continental places where atmosphere approaches pristine during occasional wet season episodes. Tall Tower Observatory (ATTO) has been established in central Amazonia to investigate complex interactions atmosphere. Physical...
We propose how a fermionic quantum gas confined to an optical lattice and coupled cavity can self-organize into state where the spontaneously emerging field amplitude induces artificial magnetic field. The fermions form either chiral insulator or liquid carrying currents. feedback mechanism via dynamical enables robust fast switching in time of phases, output be employed for direct nondestructive measurement current.
Abstract. In the Amazonian atmosphere, aerosol coarse mode comprises a complex, diverse, and variable mixture of bioaerosols emitted from rain forest ecosystem, long-range transported Saharan dust (we use Sahara as shorthand for source regions in Africa north Equator), marine aerosols Atlantic Ocean, smoke particles deforestation fires. For forest, are significance with respect to biogeochemical hydrological cycling, well ecology biogeography. However, knowledge on physicochemical biological...
Abstract. The Amazon rain forest experiences the combined pressures from human-made deforestation and progressing climate change, causing severe potentially disruptive perturbations of ecosystem's integrity stability. To intensify research on critical aspects Amazonian biosphere–atmosphere exchange, Tall Tower Observatory (ATTO) has been established in central Basin. Here we present a multi-year analysis backward trajectories to derive an effective footprint region observatory, which spans...
Abstract. New particle formation (NPF), referring to the nucleation of molecular clusters and their subsequent growth into cloud condensation nuclei (CCN) size range, is a globally significant climate-relevant source atmospheric aerosols. Classical NPF exhibiting continuous from few nanometers Aitken mode around 60–70 nm widely observed in planetary boundary layer (PBL) world but not central Amazonia. Here, classical events are rarely within PBL, instead, begins upper troposphere (UT),...
Abstract Smoke from vegetation fires affects air quality, atmospheric cycling, and the climate in Amazon rain forest. A major unknown has remained quantity of long-range transported smoke Africa relation to local regional fire emissions. Here we quantify abundance, seasonality, properties African central Amazonia. We show that it accounts for ~ 60% black carbon concentrations during wet season 30% dry season. The influences aerosol-radiation interactions across entire Amazon, with strongest...
The Amazon rainforest in Brazil and the megacity of Beijing China are two most strongly contrasting habitats on Earth. In both locations, volatile chemicals emitted into atmosphere affecting local atmospheric chemistry, air quality ecosystem health. this study, total reactivity available for reaction with atmosphere's primary oxidant OH radical, has been measured directly locations along individual organic compounds(VOC), nitrogen oxides(NOx), ozone(O3) carbon dioxide(CO2). Peak daily...
Abstract. Speciated monoterpene measurements in rainforest air are scarce, but they essential for understanding the contribution of these compounds to overall reactivity volatile organic compound (VOC) emissions towards main atmospheric oxidants, such as hydroxyl radicals (OH), ozone (O3) and nitrate (NO3). In this study, we present chemical speciation gas-phase monoterpenes measured tropical at Amazon Tall Tower Observatory (ATTO, Amazonas, Brazil). Samples VOCs were collected by two...
Abstract. The tropical forests are Earth's largest source of biogenic volatile organic compounds (BVOCs) and thus also the atmospheric sink region for hydroxyl radical (OH). However, OH above is poorly understood, as past studies have revealed large unattributed fractions total reactivity. We present first reactivity compound (VOC) measurements made at Amazon Tall Tower Observatory (ATTO) 80, 150, 320 m ground level, covering two dry seasons, one wet season, transition season in 2018–2019....
The atmospheric boundary layer height (zi) is a key parameter in the vertical transport of mass, energy, moisture, and chemical species between surface free atmosphere. There lack long-term continuous observations zi, however, particularly for remote regions, such as Amazon forest. Reanalysis products, ERA5, can fill this gap by providing temporally spatially resolved information on zi. In work, we evaluate ERA5 estimates zi (zi-ERA5) two locations corrected them means ceilometer,...
Abstract. The Amazon rainforest plays a crucial role in the global climate system, hydrological cycle, and earth's energy balance. As one of planet's least industrialized regions, it allows investigation organic aerosol formation constituents under almost pristine conditions. Nevertheless, human activities are known to affect this ecosystem – especially during dry season. In study, ambient samples collected at Tall Tower Observatory (ATTO) two wet seasons were characterized by...
Abstract The relationship between the electric field of storms and surface ozone (O 3 ) levels in Amazon Tall Tower Observatory (ATTO) region was investigated. Our findings reveal that concentrations increase with rise absolute (| E z |) clouds. This phenomenon is linked to amplification downdraft magnitudes, which are similarly associated | |. Detailed analysis also indicated stronger downdrafts correlate higher levels. Consequently, |‐downdrafts‐O interaction forms a coupled system,...
Abstract. The Amazon rain forest plays an important role in the biogeochemistry, water cycle, and climate of South American continent Earth system. Tall Tower Observatory (ATTO) has been established to study quantify forest-atmosphere interactions under natural conditions, as well transformation ecosystem a result increasing perturbations related deforestation change. Here, we present design first results custom-made Robotic Lift system, RoLi, installed automatically measure high-resolution...
Due to logistical challenges, long-term human space exploration missions require a life support system capable of regenerating all the essentials for survival. Higher plants can be utilized provide continuous supply fresh food, atmosphere revitalization, and clean water humans. Plants adapt extreme environments on Earth, model have been shown grow develop through full cycle in microgravity. However, more knowledge about long term effects extraterrestrial environment plant growth development...
As part of the Observations and Modeling Green Ocean Amazon (GoAmazon 2014/5) Experiment, detailed aerosol trace gas measurements were conducted near Manaus, a metropolis located in central Basin. Measurements particles gases done downwind Manaus at sites T2 (Tiwa Hotel) T3 (Manacapuru), distance 8 70 km from respectively. Based on in-plume closer to (site T2), chemical signatures city emissions used improve interpretation pollutant levels site. We derived physical properties for city's...
Abstract. This study evaluates the effect of weather events on aerosol particle size distribution (PSD) at Amazon Tall Tower Observatory (ATTO). research combines in situ measurements PSD and remote sensing data lightning density, brightness temperature, cloud top height, liquid water, rain rate vertical velocity. Measurements were obtained by scanning mobility sizers (SMPSs), new generation GOES satellites (GOES-16), SIPAM S-band radar LAP 3000 wind profiler recently installed ATTO-Campina...