Article
Meteorology & Atmospheric Sciences
Masahiro Minowa, Pedro Skvarca, Koji Fujita
Summary: The mass budget of southern Patagonian glaciers is heavily affected by surface ablation, with an average point surface mass balance of -16.3 m water equivalent (w.e.) yr -1 between 1996 and 2020. The analysis found that the mean annual temperature has increased at a rate of 0.28C decade -1 over the study period. The largest contribution to the surface energy balance was the sensible heat flux.
JOURNAL OF CLIMATE
(2023)
Article
Geosciences, Multidisciplinary
Benjamin D. Boatwright, James W. Head
Summary: Inverted fluvial channels on Mars provide evidence of flowing liquid water in the early period, which is important for studying the planet's climate and landform evolution.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Geography, Physical
Nathan D. Stansell, Bryan G. Mark, Joseph M. Licciardi, Donald T. Rodbell, Jonathan G. Fairman, Forrest S. Schoessow, Tal Y. Shutkin, Mary Sorensen
Summary: Limited knowledge about early Holocene climate variability in the tropical Andes hinders the evaluation of potential links between low and high latitude oceanic-atmospheric dynamics. This study uses a physically-based glacier model to reconstruct and interpret early Holocene-aged paleoglaciers in the Cordillera Blanca, Peru. The results indicate periods of colder and wetter conditions during the early Holocene, despite an overall trend of warmer and drier climate.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Jan Kavan, Mateusz C. C. Strzelecki
Summary: The consequences of accelerating climatic warming on Arctic landscape evolution are far-reaching. Glacier retreat in Svalbard has led to the formation of new coastal landscapes and a shift from marine-terminating to land-based glaciers. These changes have significant implications for fjord circulation, marine ecosystems, biogeochemical cycles, and coastal CO2 budget.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Multidisciplinary Sciences
Joseph S. Levy, Caleb Fassett, John W. Holt, Reid Parsons, Will Cipolli, Timothy A. Goudge, Michelle Tebolt, Lily Kuentz, Jessica Johnson, Fairuz Ishraque, Bronson Cvijanovich, Ian Armstrong
Summary: Glacial landforms on Mars, such as lobate debris aprons, may have experienced multiple cycles of ice deposition and continuous flow, similar to terrestrial glaciers. Studies have found that boulders atop Martian glacial landforms are clustered in bands, with more bands appearing at higher latitudes, longer debris apron lengths, and pole-facing flow orientations. This suggests a correlation between latitude and boulder clustering, indicating ice mass-balance operates on a global scale on Mars.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Geosciences, Multidisciplinary
Jianghu Lan, Jun Cheng, Sakonvan Chawchai, Xingxing Liu, Peng Cheng, Yitao Liu, Smith Leknettip, Hong Yan, Youbin Sun, Jibao Dong, Hai Xu, Xiaolin Ma, Haiwei Zhang, Fengyan Lu, Libin Ma, Liangcheng Tan, Zhengyu Liu
Summary: This research reveals a significant shift in the seasonal rainfall regime from summer to winter in the Thai-Malay Peninsula during the Holocene, as a result of changes in summer and winter monsoons. The findings suggest that climate change around the boundaries of rainfall regimes in the tropics and possibly worldwide could cause instability in the seasonal rainfall regime, which is crucial for shaping ecological environments in the past and future.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Environmental Sciences
Daniele Bocchiola, Francesco Chirico, Andrea Soncini, Roberto Sergio Azzoni, Guglielmina Adele Diolaiuti, Antonella Senese
Summary: This study mapped the flow velocity and calving rates of the Perito Moreno Glacier in the Argentinian Patagonia using satellite images. The results showed that the glacier's flow velocity and calving rates vary seasonally, with the highest values observed in summer. The calving rates were slightly lower than previous studies, indicating a generally stable state of the glacier.
Article
Geography, Physical
Joanna Charton, Deborah Verfaillie, Vincent Jomelli, Bernard Francou
Summary: Rock glaciers in the French Alps were dated using Be-10, with mean ages of 11.8 +/- 0.5 kyrs and 11.6 +/- 0.6 kyrs. One of the glaciers was determined to be talus-derived, while the origin of the other was less clear. These glaciers became inactive during the transition period between the Younger Dryas and the Holocene, with estimated temperatures significantly lower than in the 1980s.
Article
Multidisciplinary Sciences
D. T. Rodbell, R. G. Hatfield, M. B. Abbott, C. Y. Chen, A. Woods, J. S. Stoner, D. McGee, P. M. Tapia, M. Bush, B. L. Valero-Garces, S. B. Lehmann, S. Z. Mark, N. C. Weidhaas, A. L. Hillman, D. J. Larsen, G. Delgado, S. A. Katz, K. E. Solada, A. E. Morey, M. Finkenbinder, B. Valencia, A. Rozas-Davila, N. Wattrus, S. M. Colman, M. G. Bustamante, J. Kueck, S. Pierdominici
Summary: This study presents a continuous and independently dated archive of tropical glaciation spanning 700,000 years, using a piston core from Lake Junin. The research finds that tropical glaciers were influenced by changes in global ice volume with an approximately 100,000-year periodicity. An increase in the extent of tropical Andean glaciers relative to global ice volume occurred between 200,000 and 400,000 years ago, during sustained intervals of regionally elevated hydrologic balance that modified the regular approximately 23,000-year pacing of monsoon-driven precipitation. Millennial-scale variations in the extent of tropical Andean glaciers during the last glacial cycle were driven by variations in regional monsoon strength that were linked to temperature perturbations in Greenland ice cores.
Article
Geosciences, Multidisciplinary
Yaojun Li, Yongjian Ding, Donghui Shangguan, Fengjing Liu, Qiudong Zhao
Summary: The study reveals that the rate of glacier mass loss has been accelerating globally over the past few decades, with a high level of consistency between the acceleration and temperature suggesting a significant impact of climate warming. Alaska glaciers showed the highest acceleration in mass change, while Central Europe exhibited the highest acceleration during 1961-2016.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Nicholas G. Heavens
Summary: The study uses global climate models to simulate the historical situation of tropical mountain glaciers. It finds that the simulations underestimate the equilibrium line altitudes, with errors in large-scale model precipitation and ELA reconstruction uncertainty being the main contributors to this bias.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Multidisciplinary Sciences
V Jomelli, D. Swingedouw, M. Vuille, V Favier, B. Goehring, J. Shakun, R. Braucher, I Schimmelpfennig, L. Menviel, A. Rabatel, L. C. P. Martin, P-H Blard, T. Condom, M. Lupker, M. Christl, Z. He, D. Verfaillie, A. Gorin, G. Aumaitre, D. L. Bourles, K. Keddadouche
Summary: Based on cosmic-ray exposure chronologies, the study reveals that glaciers in the tropical Andes and the north Atlantic regions showed variations on millennial timescales during the Holocene, distinct from other regions. Transient climate simulations and a semi-empirical model also suggest that the Atlantic Meridional Ocean Overturning Circulation (AMOC) plays a significant role in driving glacier changes in these regions. The findings highlight the importance of understanding past AMOC behavior as a potential driver of glacier variations.
NATURE COMMUNICATIONS
(2022)
Article
Environmental Sciences
Daniel Ruiz-Carrascal, Daniel Gonzalez-Duque, Isabel Restrepo-Correa
Summary: One way to deduce the vertical changes in Colombian high-altitude paramo environments is by inferring the fluctuations in the local freezing level height. In this research, the authors used remote sensing, field-based geomorphological mapping, and time-series reconstruction to reconstruct the changes in freezing level height in glacier-covered areas of the northern Andes. By analyzing paleo-reconstructions of sea surface temperatures and other climate data, the authors were able to infer the past glacier advances and compare them with present-day trends. This study provides insights into past climatic changes and contributes to the understanding of natural and anthropogenic climate change signals in the region.
JOURNAL OF MOUNTAIN SCIENCE
(2022)
Article
Environmental Sciences
Georg Veh, Natalie Luetzow, Varvara Kharlamova, Dmitry Petrakov, Romain Hugonnet, Oliver Korup
Summary: Thousands of glacier lakes have formed in high mountains since the early 20th century following glacier retreat. Some of these lakes have released large amounts of water and sediment with disastrous consequences downstream. However, it is unclear whether the reported rise in glacier lake outburst floods (GLOFs) is due to a warming atmosphere or simply increased research efforts. This study finds that the number of reported GLOFs has decreased since the 1970s, coinciding with changes in annual air temperatures and number of field-based glacier surveys. The findings suggest a weak coupling between temperature-driven glacier processes and GLOF occurrences, or the possibility of overlooked outbursts.
Article
Environmental Sciences
Jakob Abermann, Manuel Theurl, Elisabeth Frei, Bernhard Hynek, Wolfgang Schoener, Karl W. Steininger
Summary: Glaciers are seen as symbols of pristine high mountain landscapes by humans, attracting millions of visitors annually and providing crucial ecosystem services. Despite the high costs exceeding three times the revenue from tourism, artificial management can still conserve glaciers with abundant water availability under ongoing climate change.
REGIONAL ENVIRONMENTAL CHANGE
(2022)
Article
Meteorology & Atmospheric Sciences
Hamish D. Prince, Nicolas J. Cullen, Peter B. Gibson, Jono Conway, Daniel G. Kingston
Summary: Extreme precipitation events in New Zealand have devastating impacts on the local society and environment. An automated atmospheric river detection technique is used to study extreme precipitation climatology, revealing seasonal and regional variations. AR events have the highest impact on the western coast of New Zealand, with precipitation totals exceeding 1000 mm.
JOURNAL OF CLIMATE
(2021)
Article
Meteorology & Atmospheric Sciences
Elena Kropac, Thomas Moelg, Nicolas J. Cullen, Emily Collier, Carolyne Pickler, Jenny Turton
Summary: The study demonstrates the significant impact of atmospheric rivers on New Zealand's glaciers and highlights the benefits of mesoscale atmospheric modeling for advancing the understanding of the glacier-climate relationship in New Zealand.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Meteorology & Atmospheric Sciences
Bibi Nariefa Abrahim, Nicolas James Cullen, Jonathan Paul Conway
Summary: High-altitude observations of mountain meteorology in the Southern Alps are rare but important for detecting changes in seasonal snow and glacier extent. A unique in situ analysis of surface meteorology, including radiative forcing from clouds, was conducted near Brewster Glacier in the Southern Alps of New Zealand over the period 2010-2020. The study found that winter snow covers Brewster Glacier between June and November, with rainfall accounting for more than half of total precipitation.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2022)
Article
Geography, Physical
Andrew M. Lorrey, Lauren Vargo, Heather Purdie, Brian Anderson, Nicolas J. Cullen, Pascal Sirguey, Andrew Mackintosh, Andrew Willsman, Gregor Macara, Warren Chinn
Summary: This study uses a four-decade summer snowline dataset in New Zealand to create a climatological reference series. The findings show that there has been a trend of increasing snowlines in the region since the 1990s, which has intensified in recent decades. It is projected that by the 2025-2034 decade, the average snowline elevation in New Zealand will be at least 200 meters higher than normal.
JOURNAL OF GLACIOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
Morgan J. Bennet, Daniel G. Kingston, Nicolas J. Cullen
Summary: Attention is being focused on land-atmosphere interactions in the hydrological cycle to understand extreme hydrometeorological events, especially with the identification of compound and seesaw events. Soil moisture data from three reanalysis products were compared to station observations in New Zealand, revealing strong coupling between soil moisture and temperature in energy-limited regions. Additionally, a series of seesaw events were detected for the first time in New Zealand, coinciding with areas of atmospheric river activity.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2023)
Article
Environmental Sciences
Felix Cook, Robert O. Smith, Moninya Roughan, Nicolas J. Cullen, Nick Shears, Melissa Bowen
Summary: Marine heatwaves (MHWs) have extensive effects on marine species and ecosystems. Previous studies on MHWs have focused on open-ocean environments, neglecting the nearshore coastal ocean. This study investigates MHWs in shallow water marine ecosystems (SWMEs) using long-term ocean temperature records from New Zealand, revealing the influence of local atmospheric conditions on MHW occurrence.
FRONTIERS IN CLIMATE
(2022)
Article
Geography, Physical
Marte G. Hofsteenge, Nicolas J. Cullen, Carleen H. Reijmer, Michiel van den Broeke, Marwan Katurji, John F. Orwin
Summary: This study investigates the impact of foehn events on the energy balance in the McMurdo Dry Valleys. It is found that foehn events enhance meltwater production and increase melt rates through reduced albedo. Additionally, foehn winds cause a continuous input of sensible heat flux and extra heat losses through turbulent mixing.
Article
Geography, Physical
Jonathan P. Conway, Jakob Abermann, Liss M. Andreassen, Mohd Farooq Azam, Nicolas J. Cullen, Noel Fitzpatrick, Rianne H. Giesen, Kirsty Langley, Shelley MacDonell, Thomas Moelg, Valentina Radic, Carleen H. Reijmer, Jean-Emmanuel Sicart
Summary: Clouds play a crucial role in the climate system and their impact on glacier melt varies in different climates. By analyzing datasets from 16 mountain glaciers around the world, this study reveals the complex relationships between clouds, meteorology, radiation, and surface energy balance. The results highlight the importance of considering the effect of clouds on net radiation when assessing glacier response to climate change.
Article
Geosciences, Multidisciplinary
Aubrey Miller, Pascal Sirguey, Simon Morris, Perry Bartelt, Nicolas Cullen, Todd Redpath, Kevin Thompson, Yves Buhler
Summary: Accurate digital elevation models (DEMs) are crucial for natural hazard models. This study uses satellite photogrammetry and topographic lidar to generate high-resolution DEMs and investigates the sensitivity of simulation results to the source and spatial resolution of the DEM.
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2022)
Proceedings Paper
Multidisciplinary Sciences
Harald Schellander, Michael Winkler, Tobias Hell
Summary: The European Committee for Standardization defines zones and calculation criteria for snow loads in different European regions, with inconsistencies in national borders being a common issue. A new methodology for deriving a snow load map for Austria has been proposed, which is more accurate and does not require zoning.
ADVANCES IN SCIENCE AND RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
Michael Winkler, Harald Schellander, Stefanie Gruber
Summary: A new semiempirical multi-layer model, Delta SNOW, is introduced for simulating SWE and snow density solely from snow depth time series, showing promising results with a median bias and root mean square error for SWE of -3.0 and 30.8 kg m(-2), and +0.3 and 36.3 kg m(-2) for peak SWE. This model provides a means to derive robust SWE estimates from historical snow depth data and has the potential to generate distributed SWE from remotely sensed snow depth distribution estimates with some modifications.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2021)
Article
Geography, Physical
Michael Matiu, Alice Crespi, Giacomo Bertoldi, Carlo Maria Carmagnola, Christoph Marty, Samuel Morin, Wolfgang Schoener, Daniele Cat Berro, Gabriele Chiogna, Ludovica De Gregorio, Sven Kotlarski, Bruno Majone, Gernot Resch, Silvia Terzago, Mauro Valt, Walter Beozzo, Paola Cianfarra, Isabelle Gouttevin, Giorgia Marcolini, Claudia Notarnicola, Marcello Petitta, Simon C. Scherrer, Ulrich Strasser, Michael Winkler, Marc Zebisch, Andrea Cicogna, Roberto Cremonini, Andrea Debernardi, Mattia Faletto, Mauro Gaddo, Lorenzo Giovannini, Luca Mercalli, Jean-Michel Soubeyroux, Andrea Susnik, Alberto Trenti, Stefano Urbani, Viktor Weilguni
Summary: This study presents an Alpine-wide analysis of snow depth in the European Alps, incorporating data from over 2000 stations in six countries. The analysis reveals decreasing trends in snow depth for most stations from November to May over the past few decades. Different regions within the Alps show varying trends, challenging the generalization of results across the entire mountain range.
Article
Geography, Physical
Angus J. Dowson, Pascal Sirguey, Nicolas J. Cullen
Article
Geosciences, Multidisciplinary
Thomas Moelg, Douglas R. Hardy, Emily Collier, Elena Kropac, Christina Schmid, Nicolas J. Cullen, Georg Kaser, Rainer Prinz, Michael Winkler
EARTH SYSTEM DYNAMICS
(2020)
