A5047982152- Cryospheric studies and observations
- Geology and Paleoclimatology Research
- Polar Research and Ecology
- Arctic and Antarctic ice dynamics
- Landslides and related hazards
- Winter Sports Injuries and Performance
- Atmospheric chemistry and aerosols
- High Altitude and Hypoxia
- Climate change and permafrost
- Atmospheric and Environmental Gas Dynamics
- Geochemistry and Geologic Mapping
- Radioactivity and Radon Measurements
- Recycling and Waste Management Techniques
- Isotope Analysis in Ecology
- Heavy metals in environment
- Microplastics and Plastic Pollution
- Environmental and Cultural Studies in Latin America and Beyond
- Tree-ring climate responses
- Methane Hydrates and Related Phenomena
- Aeolian processes and effects
- Drilling and Well Engineering
- Arsenic contamination and mitigation
- Marine animal studies overview
- Atmospheric aerosols and clouds
- Microbial Community Ecology and Physiology
University of Maine
2012-2025
Virtual Corporation (United States)
2021
Institute of Biochemistry and Biophysics, Polish Academy of Sciences
2018
Polish Academy of Sciences
2004
Mount Everest was once a pristine environment. However, due to increased tourism, waste is accumulating on the mountain, with large proportion being made of plastic. This research aimed identify and characterize microplastic (MP) pollution near top highest mountain Earth could illustrate implications for environment people living below. Stream water snow were collected from multiple locations leading up to, including, Balcony (8,440 m.a.s.l). MPs detected at an ~30 MP L−1 in ~1 stream water,...
Abstract As the highest mountain on Earth, Mount Everest is an iconic peak that offers unrivalled natural platform for measuring ongoing climate change across full elevation range of Asia’s water towers. However, Everest’s extreme environment challenges data collection, particularly mountain’s upper slopes, where glaciers accumulate mass and mountaineers are most exposed. Weather stations have operated before, including world’s previous highest, but coverage has been sparse in space time....
Abstract Mountain glacier systems are decreasing in volume worldwide yet relatively little is known about their upper reaches (>5000 m). Here we show, based on the world’s highest ice core and automatic weather stations, significant increasing role that melting sublimation have mass loss of even Mt. Everest’s (South Col Glacier, 8020 Estimated contemporary thinning rates approaching ~2 m a −1 water equivalent (w.e.) indicate several decades accumulation may be lost an annual basis now has...
Antarctica is a region of the world where climate change visible in rapid melting glaciers. This particularly evident marginal zones, pace glacial retreat has systematically accelerated. The effective mapping these changes possible with use remote sensing methods. study assesses glacier margin positions between 1979 and 2018 Antarctic Specially Protected Area 128 (ASPA-128) on King George Island, South Shetland Islands, Antarctica. In 1979, 19.8 km2 area was glaciated. Over following 39...
Microorganisms are present in snow/ice of the Antarctic Plateau, but their biogeography and metabolic state under extreme local conditions poorly understood. Here, we show diversity distribution microorganisms air (1.5 m height) down to 4 depth at three distant latitudes along a 2578 km transect on East Plateau board an environmentally friendly, mobile platform. Results demonstrate widespread ice least depth. Data point geochemical bacterial geographic that correlate with wind trajectory...
Abstract The location and intensity of the austral westerlies strongly influence southern hemisphere precipitation heat transport with consequences for human society ecosystems. With future warming, global climate models project increased aridity in mid‐latitudes related to continued poleward contraction westerlies. We utilize Antarctic ice cores investigate past set stage prediction behaviour show that Holocene West core reconstructions atmospheric circulation sensitively record naturally...
Understanding the distribution of airborne uranium is important because it can result in both chemical and radiological toxicity. Ice cores offer most robust reconstruction past atmospheric levels toxic substances. Here we present first sub-annually dated, continuously sampled ice core documenting change U Southern Hemisphere. The was recovered from Detroit Plateau, northern Antarctic Peninsula, 2007 by a joint Brazilian-Chilean-US team. It displays significant increase concentration that...
Abstract. The sub-Antarctic is one of the most data-sparse regions on earth. A number glaciated Antarctic and islands have potential to provide unique ice core records past climate, atmospheric circulation, sea ice. However, very little known about glaciology these remote or their vulnerability warming temperature. Here we present melt histories density profiles from shallow (firn) cores (14 24 m) drilled three two coastal domes. Additionally, complementary ground-penetrating radar (GPR)...
Abstract. Although its Holocene glacier history is still subject to debate, the ongoing iconic decline of Kilimanjaro's largest remaining ice body, Northern Ice Field (NIF), has been documented extensively based on surface and photogrammetric measurements. The study presented here adds, for first time, ground-penetrating radar (GPR) data at centre frequencies 100 200 MHz investigate bed topography, thickness internal stratigraphy NIF. direct comparison GPR signal visible NIF's vertical walls...
Investigation of organic compounds in ice cores can potentially unlock a wealth new information these climate archives. We present results from the first ever core drilled on sub-Antarctic island Bouvet, representing climatologically important but understudied region. analyze suite novel and more familiar core, alongside commonly measured ions. Methanesulfonic acid shows significant, positive correlation to winter sea concentration, as does fatty compound, oleic acid. Both may be sourced...
Global audiences are captivated by climbers pushing themselves to the limits in hypoxic environment of Mount Everest. However, air pressure sets oxygen abundance, meaning it varies with weather and climate warming. This presents safety issues for mountaineers but also an opportunity public engagement around change. Here we blend new observations from Everest ERA5 reanalysis (1979-2019) model results address both perspectives. We find that plausible warming could generate subtle...
Ice core records provide a robust tool for reconstructing past climate variability and improving our understanding of the relative contributions natural anthropogenic emissions into atmosphere. In particular, heavy metal pollution from poses significant health environmental risk. We present sub-annually dated, continuously sampled Tupungatito ice (TPG-12) data set that documents change in atmospheric Central Chile. Results well-preserved record display pollutant concentrations coincident...
Abstract The maritime Antarctic is characterised by highly variable weather conditions throughout the year, as well over multi-year periods. annual variability of constitutes an important basis for biological and geographical studies, allowing monitoring functioning changes environment west coast Admiralty Bay (King George Island, South Shetlands, Antarctica). Year-round meteorological observations (1.2006-12.2006) measured: atmospheric pressure, wind speed direction, cloud cover, air...
Abstract The tropical Andes of southern Peru and northern Bolivia have several major mountain summits suitable for ice core paleoclimatic investigations. However, incomplete understanding the controls on isotopic (δD, δ18O) composition precipitation a paucity field observations in this region continue to limit ice-core-based paleoclimate reconstructions. This study examines four years daily δD δ18O from citizen scientist network northeastern margin Altiplano, identify subseasonal...
In April and May 2019, as part of National Geographic Rolex's Perpetual Planet Everest Expedition, an interdisciplinary scientific effort conducted a suite research on the mountain recognized many changing dynamics, including emergent risks resulting from natural anthropogenic changes to biological system. this Primer, diverse teams highlight ecosystem human health, geologic hazards, climbing conditions that could affect local community, climbers, trekkers in future. We bring together...
This case study provides a framework for future monitoring and evidence human source pollution in the Khumbu region, Nepal. We analyzed chemical composition (major ions, major/trace elements, black carbon, stable water isotopes) of pre-monsoon stream (4300–5250 m) snow (5200–6665 samples collected from Mt. Everest, Lobuche, Imja Valley during 2019 season, addition to shallow ice core recovered Glacier (5300 m). In agreement with previous work, aerosol deposition is dominated by dust...
Investigation of organic compounds in ice cores can potentially unlock a wealth new information these climate archives. We present results from the first ever core drilled on sub‐Antarctic island Bouvet, representing climatologically important but understudied region. analyze suite novel and more familiar core, alongside commonly measured ions. Methanesulfonic acid shows significant, positive correlation to winter sea concentration, as does fatty compound, oleic acid. Both may be sourced...
Abstract. The sub-Antarctic is one of the most data sparse regions on earth. A number glaciated Antarctic and islands have potential to provide unique ice core records past climate, atmospheric circulation sea ice. However, very little known about glaciology these remote or their vulnerability warming temperatures. Here we present ground penetrating radar (GPR), melt histories density profiles from shallow cores (14 24 m) drilled three two coastal domes. This includes first ever Bouvet...
ABSTRACT We present the first snow/ice chemistry and ice radar results ever collected from South Georgia as part of an initial reconnaissance with ultimate goal assessing feasibility a core to reconstruct past climate in Atlantic. is well situated capture record atmospheric chemical composition over Atlantic variability position intensity austral westerlies. The question how preserved can be recovered region experiencing accelerated melting? presented this paper offer only preliminary step...
It is estimated that the explosive Hudson volcano eruption in Southern Chile injected approximately 2.7 km3 of basalt and trachyandesite tephra into troposphere between August 8-15, 1991. The signal has been detected Antarctica at eastern sector South Pole snow. In this work, we track volcanic plume using a dispersion model, remote sensing, re-analysis high-resolution ice core analysis from Detroit Plateau Antarctic Peninsula sedimentary records shallow lakes King George Island (KGI)....
Abstract. Although its Holocene glacier history is still subject to debate, the ongoing iconic decline of Kilimanjaro's largest remaining ice body, Northern Ice Field (NIF), has been documented extensively based on surface and photogrammetric measurements. The study presented here adds, for first time, ground-penetrating radar (GPR) data at center frequencies 100 200 MHz investigate bedrock topography, thickness internal stratigraphy NIF. direct comparison GPR signal visible NIF's vertical...