Articles | Volume 13, issue 8
https://doi.org/10.5194/tc-13-2203-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-13-2203-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Water tracks intensify surface energy and mass exchange in the Antarctic McMurdo Dry Valleys
Tobias Linhardt
CORRESPONDING AUTHOR
Micrometeorology Group, University of Bayreuth, Bayreuth, Bavaria, Germany
Joseph S. Levy
Department of Geology, Colgate University, Hamilton, New York, USA
Christoph K. Thomas
Micrometeorology Group, University of Bayreuth, Bayreuth, Bavaria, Germany
Bayreuth Center of Ecology and Environmental Research (BayCEER), University of Bayreuth, Bayreuth, Bavaria, Germany
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Andrew W. Seidl, Aina Johannessen, Alena Dekhtyareva, Jannis M. Huss, Marius O. Jonassen, Alexander Schulz, Ove Hermansen, Christoph K. Thomas, and Harald Sodemann
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2024-293, https://doi.org/10.5194/essd-2024-293, 2024
Preprint under review for ESSD
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ISLAS2020 set out to measure the stable water isotopic composition of Arctic moisture. By not only measuring at different sites around Ny-Ålesund, Svalbard, but also measuring at variable heights above surface level, we aim to characterize processes that produce or modify the isotopic composition. We also collect precipitation samples from sites that were typically downstream of Ny-Ålesund, so as to capture the isotopic composition during removal from the atmospheric water cycle.
Eike Maximilian Esders, Christoph Georgi, Wolfgang Babel, Andreas Held, and Christoph Karl Thomas
Aerosol Research, 2, 235–243, https://doi.org/10.5194/ar-2-235-2024, https://doi.org/10.5194/ar-2-235-2024, 2024
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Our study explores how tiny plastic particles, known as microplastics (MPs), move through the air. We focus on their journey in a wind tunnel to mimic atmospheric transport. Depending on the air speed and the height of their release, they move downwards or upwards. These results suggest that MPs behave like mineral particles and that we can expect MPs to accumulate where natural dust also accumulates in the environment, offering insights for predicting the spread and impacts of MPs.
Julius Seidler, Markus N. Friedrich, Christoph K. Thomas, and Anke C. Nölscher
Atmos. Chem. Phys., 24, 137–153, https://doi.org/10.5194/acp-24-137-2024, https://doi.org/10.5194/acp-24-137-2024, 2024
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Here, we study the transport of ultrafine particles (UFPs) from an airport to two new adjacent measuring sites for 1 year. The number of UFPs in the air and the diurnal variation are typical urban. Winds from the airport show increased number concentrations. Additionally, considering wind frequencies, we estimate that, from all UFPs measured at the two sites, 10 %–14 % originate from the airport and/or other UFP sources from between the airport and site.
Eike Maximilian Esders, Sebastian Sittl, Inka Krammel, Wolfgang Babel, Georg Papastavrou, and Christoph Karl Thomas
Atmos. Chem. Phys., 23, 15835–15851, https://doi.org/10.5194/acp-23-15835-2023, https://doi.org/10.5194/acp-23-15835-2023, 2023
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Do microplastics behave differently from mineral particles when they are exposed to wind? We observed plastic and mineral particles in a wind tunnel and measured at what wind speeds the particles start to move. The results indicate that microplastics start to move at smaller wind speeds as they weigh less and are less sticky. Hence, we think that microplastics also move more easily in the environment.
Mohammad Abdoli, Karl Lapo, Johann Schneider, Johannes Olesch, and Christoph K. Thomas
Atmos. Meas. Tech., 16, 809–824, https://doi.org/10.5194/amt-16-809-2023, https://doi.org/10.5194/amt-16-809-2023, 2023
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In this study, we compute the distributed sensible heat flux using a distributed temperature sensing technique, whose magnitude, sign, and temporal dynamics compare reasonably well to estimates from classical eddy covariance measurements from sonic anemometry. Despite the remaining uncertainty in computed fluxes, the results demonstrate the potential of the novel method to compute spatially resolving sensible heat flux measurement and encourage further research.
Wolfgang Fischer, Christoph K. Thomas, Nikita Zimov, and Mathias Göckede
Biogeosciences, 19, 1611–1633, https://doi.org/10.5194/bg-19-1611-2022, https://doi.org/10.5194/bg-19-1611-2022, 2022
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Arctic permafrost ecosystems may release large amounts of carbon under warmer future climates and may therefore accelerate global climate change. Our study investigated how long-term grazing by large animals influenced ecosystem characteristics and carbon budgets at a Siberian permafrost site. Our results demonstrate that such management can contribute to stabilizing ecosystems to keep carbon in the ground, particularly through drying soils and reducing methane emissions.
Karl Lapo, Anita Freundorfer, Antonia Fritz, Johann Schneider, Johannes Olesch, Wolfgang Babel, and Christoph K. Thomas
Earth Syst. Sci. Data, 14, 885–906, https://doi.org/10.5194/essd-14-885-2022, https://doi.org/10.5194/essd-14-885-2022, 2022
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The layer of air near the surface is poorly understood during conditions with weak winds. Further, it is even difficult to observe. In this experiment we used distributed temperature sensing to observe air temperature and wind speed at thousands of points simultaneously every couple of seconds. This incredibly rich data set can be used to examine and understand what drives the mixing between the atmosphere and surface during these weak-wind periods.
Teresa Vogl, Amy Hrdina, and Christoph K. Thomas
Biogeosciences, 18, 5097–5115, https://doi.org/10.5194/bg-18-5097-2021, https://doi.org/10.5194/bg-18-5097-2021, 2021
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The relaxed eddy accumulation technique is a method used for measuring fluxes of chemical species in the atmosphere. It relies on a proportionality factor, β, which can be determined using different methods. Also, different techniques for sampling can be used by only drawing air into the measurement system when vertical wind velocity exceeds a certain threshold. We compare different ways to obtain β and different threshold techniques to direct flux measurements for three different sites.
Marie-Louise Zeller, Jannis-Michael Huss, Lena Pfister, Karl E. Lapo, Daniela Littmann, Johann Schneider, Alexander Schulz, and Christoph K. Thomas
Earth Syst. Sci. Data, 13, 3439–3452, https://doi.org/10.5194/essd-13-3439-2021, https://doi.org/10.5194/essd-13-3439-2021, 2021
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The boundary layer (BL) is well understood when convectively mixed, yet we lack this understanding when it becomes stable and no longer follows classic similarity theories. The NYTEFOX campaign collected a unique meteorological data set in the Arctic BL of Svalbard during polar night, where it tends to be highly stable. Using innovative fiber-optic distributed sensing, we are able to provide unique insight into atmospheric motions across large distances resolved continuously in space and time.
Olli Peltola, Karl Lapo, Ilkka Martinkauppi, Ewan O'Connor, Christoph K. Thomas, and Timo Vesala
Atmos. Meas. Tech., 14, 2409–2427, https://doi.org/10.5194/amt-14-2409-2021, https://doi.org/10.5194/amt-14-2409-2021, 2021
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We evaluated the suitability of fiber-optic distributed temperature sensing (DTS) for observing spatial (>25 cm) and temporal (>1 s) details of airflow within and above forests. The DTS measurements could discern up to third-order moments of the flow and observe spatial details of coherent flow motions. Similar measurements are not possible with more conventional measurement techniques. Hence, the DTS measurements will provide key insights into flows close to roughness elements, e.g. trees.
Karl Lapo, Anita Freundorfer, Lena Pfister, Johann Schneider, John Selker, and Christoph Thomas
Atmos. Meas. Tech., 13, 1563–1573, https://doi.org/10.5194/amt-13-1563-2020, https://doi.org/10.5194/amt-13-1563-2020, 2020
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Most observations of the atmosphere are
point observations, which only measure a small area around the sensor. This limitation creates problems for a number of disciplines, especially those that focus on how the surface and atmosphere exchange heat, mass, and momentum. We used distributed temperature sensing with fiber optics to demonstrate a key breakthrough in observing wind direction in a distributed way, i.e., not at a point, using small structures attached to the fiber-optic cables.
Armin Sigmund, Korbinian Freier, Till Rehm, Ludwig Ries, Christian Schunk, Anette Menzel, and Christoph K. Thomas
Atmos. Chem. Phys., 19, 12477–12494, https://doi.org/10.5194/acp-19-12477-2019, https://doi.org/10.5194/acp-19-12477-2019, 2019
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Air masses at the Schneefernerhaus mountain site at Zugspitze Mountain, Germany, were classified with respect to the atmospheric layer from which they originated and their degree of pollution. Measurements of several gases, particulate matter, and standard meteorological quantities indicated that polluted air was lifted to the site in 31 % of cases and clean air descended to the site in approximately 14 % cases while most of the remaining cases were ambiguous.
Anne Klosterhalfen, Alexander Graf, Nicolas Brüggemann, Clemens Drüe, Odilia Esser, María P. González-Dugo, Günther Heinemann, Cor M. J. Jacobs, Matthias Mauder, Arnold F. Moene, Patrizia Ney, Thomas Pütz, Corinna Rebmann, Mario Ramos Rodríguez, Todd M. Scanlon, Marius Schmidt, Rainer Steinbrecher, Christoph K. Thomas, Veronika Valler, Matthias J. Zeeman, and Harry Vereecken
Biogeosciences, 16, 1111–1132, https://doi.org/10.5194/bg-16-1111-2019, https://doi.org/10.5194/bg-16-1111-2019, 2019
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To obtain magnitudes of flux components of H2O and CO2 (e.g., transpiration, soil respiration), we applied source partitioning approaches after Scanlon and Kustas (2010) and after Thomas et al. (2008) to high-frequency eddy covariance measurements of 12 study sites covering various ecosystems (croplands, grasslands, and forests) in different climatic regions. We analyzed the interrelations among turbulence, site characteristics, and the performance of both partitioning methods.
Thomas Foken, Wolfgang Babel, and Christoph Thomas
Atmos. Meas. Tech., 12, 971–976, https://doi.org/10.5194/amt-12-971-2019, https://doi.org/10.5194/amt-12-971-2019, 2019
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Recently reported trends of carbon dioxide uptake pose the question of whether trends may be the result of the limited digitalization of gas analysers and sonic anemometers used in the 1990s. Modifying a 12 bit digitalization and the instrument error reported for the R2 and R3 sonic anemometers found elsewhere, the influence of these deficits in comparison to the now commonly used 16 bit digitalization were quantified. Both issues have an effect only on trace gas fluxes of small magnitude.
Armin Sigmund, Lena Pfister, Chadi Sayde, and Christoph K. Thomas
Atmos. Meas. Tech., 10, 2149–2162, https://doi.org/10.5194/amt-10-2149-2017, https://doi.org/10.5194/amt-10-2149-2017, 2017
Related subject area
Discipline: Frozen ground | Subject: Energy Balance Obs/Modelling
A new Stefan equation to characterize the evolution of thermokarst lake and talik geometry
Convective heat transfer of spring meltwater accelerates active layer phase change in Tibet permafrost areas
The surface energy balance in a cold and arid permafrost environment, Ladakh, Himalayas, India
Noriaki Ohara, Benjamin M. Jones, Andrew D. Parsekian, Kenneth M. Hinkel, Katsu Yamatani, Mikhail Kanevskiy, Rodrigo C. Rangel, Amy L. Breen, and Helena Bergstedt
The Cryosphere, 16, 1247–1264, https://doi.org/10.5194/tc-16-1247-2022, https://doi.org/10.5194/tc-16-1247-2022, 2022
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New variational principle suggests that a semi-ellipsoid talik shape (3D Stefan equation) is optimum for incoming energy. However, the lake bathymetry tends to be less ellipsoidal due to the ice-rich layers near the surface. Wind wave erosion is likely responsible for the elongation of lakes, while thaw subsidence slows the wave effect and stabilizes the thermokarst lakes. The derived 3D Stefan equation was compared to the field-observed talik thickness data using geophysical methods.
Yi Zhao, Zhuotong Nan, Hailong Ji, and Lin Zhao
The Cryosphere, 16, 825–849, https://doi.org/10.5194/tc-16-825-2022, https://doi.org/10.5194/tc-16-825-2022, 2022
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Convective heat transfer (CHT) is important in affecting thermal regimes in permafrost regions. We quantified its thermal impacts by contrasting the simulation results from three scenarios in which the Simultaneous Heat and Water model includes full, partial, and no consideration of CHT. The results show the CHT commonly happens in shallow and middle soil depths during thawing periods and has greater impacts in spring than summer. The CHT has both heating and cooling effects on the active layer.
John Mohd Wani, Renoj J. Thayyen, Chandra Shekhar Prasad Ojha, and Stephan Gruber
The Cryosphere, 15, 2273–2293, https://doi.org/10.5194/tc-15-2273-2021, https://doi.org/10.5194/tc-15-2273-2021, 2021
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We study the surface energy balance from a cold-arid permafrost environment in the Indian Himalayan region. The GEOtop model was used for the modelling of surface energy balance. Our results show that the variability in the turbulent heat fluxes is similar to that reported from the seasonally frozen ground and permafrost regions of the Tibetan Plateau. Further, the low relative humidity could be playing a critical role in the surface energy balance and the permafrost processes.
Cited articles
Adlam, L. S., Balks, M. R., Seybold, C. A., and Campbell, D. I.: Temporal and
spatial variation in active layer depth in the McMurdo Sound Region,
Antarctica, Antarct. Sci., 22, 45–52, https://doi.org/10.1017/S0954102009990460, 2010. a, b
Arblaster, J. M. and Meehl, G. A.: Contributions of External Forcings to
Southern Annular Mode Trends, J. Climate, 19, 2896–2905,
https://doi.org/10.1175/JCLI3774.1, 2006. a
Aubinet, M., Grelle, A., Ibrom, A., Rannik, Ü., Moncrieff, J., Foken, T.,
Kowalski, A. S., Martin, P. H., Berbigier, P., Bernhofer, C., Clement, R.,
Elbers, J., Granier, A., Grünwald, T., Morgenstern, K., Pilegaard, K.,
Rebmann, C., Snijders, W., Valentini, R., and Vesala, T.: Estimates of the
Annual Net Carbon and Water Exchange of Forests: The EUROFLUX Methodology,
edited by: Fitter, A. H. and Raffaelli,
D. G., Adv. Ecol. Res., 30 113–175,
https://doi.org/10.1016/S0065-2504(08)60018-5, 1999. a
Baldocchi, D. D.: Assessing the eddy covariance technique for evaluating carbon
dioxide exchange rates of ecosystems: past, present and future, Glob. Change
Biol., 9, 479–492, https://doi.org/10.1046/j.1365-2486.2003.00629.x, 2003. a
Ball, B. A. and Levy, J.: The role of water tracks in altering biotic and
abiotic soil properties and processes in a polar desert in Antarctica, J.
Geophys. Res.-Biogeo., 120, 270–279, https://doi.org/10.1002/2014JG002856, 2015. a, b, c, d
Ball, B. A., Barrett, J. E., Gooseff, M. N., Virginia, R. A., and Wall, D. H.:
Implications of meltwater pulse events for soil biology and biogeochemical
cycling in a polar desert, Polar Res., 30, 14555,
https://doi.org/10.3402/polar.v30i0.14555, 2011. a, b, c
Barrett, J. E., Virginia, R. A., Lyons, W. B., McKnight, D. M., Priscu, J. C.,
Doran, P. T., Fountain, A. G., Wall, D. H., and Moorhead, D. L.:
Biogeochemical stoichiometry of Antarctic Dry Valley ecosystems, J. Geophys.
Res., 112, G01010, https://doi.org/10.1029/2005JG000141, 2007. a
Barrett, J. E., Virginia, R. A., Wall, D. H., Doran, P. T., Fountain, A. G.,
Welch, K. A., and Lyons, W. B.: Persistent effects of a discrete warming
event on a polar desert ecosystem, Glob. Change Biol., 14, 2249–2261,
https://doi.org/10.1111/j.1365-2486.2008.01641.x, 2008. a, b
Bockheim, J. G., Campbell, I. B., and McLeod, M.: Permafrost distribution and
active-layer depths in the McMurdo Dry Valleys, Antarctica, Permafrost
Periglac., 18, 217–227, https://doi.org/10.1002/ppp.588, 2007. a, b
Buelow, H. N., Winter, A. S., van Horn, D. J., Barrett, J. E., Gooseff,
M. N., Schwartz, E., and Takacs-Vesbach, C. D.: Microbial Community Responses
to Increased Water and Organic Matter in the Arid Soils of the McMurdo Dry
Valleys, Antarctica, Front. Microbiol., 7, 1040,
https://doi.org/10.3389/fmicb.2016.01040, 2016. a
Campbell, I. B., Claridge, G. G. C., Campbell, D. I., and Balks, M. R.: The
Soil Environment of the Mcmurdo Dry Valleys, Antarctica, in: Ecosystem
Dynamics in a Polar Desert: the Mcmurdo Dry Valleys, Antarctica, edited by:
Priscu, J. C., Antar. Res. S., 14, 297–322, https://doi.org/10.1029/AR072p0297, 1998. a
Chapman, W. L. and Walsh, J. E.: A Synthesis of Antarctic Temperatures, J.
Climate, 20, 4096–4117, https://doi.org/10.1175/JCLI4236.1, 2007. a
Christensen, J. H., Krishna Kumar, K., Aldrian, E., An, S.-I., Cavalcanti, I. F. A., de Castro, M., Dong, W., Goswami, P., Hall, A., Kanyanga, J. K., Kitoh, A., and Kossin, J.: Climate Phenomena and their Relevance
for Future Regional Climate Change, in: Climate change 2013, edited by:
Stocker, T. F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S. K., Boschung, J., Nauels, A., Xia, Y., Bex, V., and Midgley, P. M.:
Cambridge University Press, Cambridge, UK and New York, USA, 1217–1308,
https://doi.org/10.1017/CBO9781107415324.028, 2013. a, b
Comte, J., Culley, A. I., Lovejoy, C., and Vincent, W. F.: Microbial
connectivity and sorting in a High Arctic watershed, ISME J., 12, 2988–3000,
https://doi.org/10.1038/s41396-018-0236-4, 2018. a
Conovitz, P. A., MacDonald, L. H., and McKnight, D. M.: Spatial and Temporal
Active Layer Dynamics along Three Glacial Meltwater Streams in the McMurdo
Dry Valleys, Antarctica, Arct. Antarct. Alp. Res., 38, 42–53,
https://doi.org/10.1657/1523-0430(2006)038[0042:SATALD]2.0.CO;2, 2006. a, b
Convey, P.: The influence of environmental characteristics on life history
attributes of Antarctic terrestrial biota, Biol. Rev., 71, 191–225,
https://doi.org/10.1111/j.1469-185X.1996.tb00747.x, 1996. a
Doran, P. T.: Valley floor climate observations from the McMurdo dry valleys,
Antarctica, 1986–2000, J. Geophys. Res., 107, ACL-13,
https://doi.org/10.1029/2001JD002045, 2002. a
Doran, P. T., Priscu, J. C., Lyons, W. B., Walsh, J. E., Fountain, A. G.,
McKnight, D. M., Moorhead, D. L., Virginia, R. A., Wall, D. H., Clow, G. D.,
Fritsen, C. H., McKay, C. P., and Parsons, A. N.: Antarctic climate cooling
and terrestrial ecosystem response, Nature, 415, 517–520,
https://doi.org/10.1038/nature710, 2002. a
Doran, P. T., McKay, C. P., Fountain, A. G., Nylen, T., McKnight, D. M., Jaros,
C., and Barrett, J. E.: Hydrologic response to extreme warm and cold summers
in the McMurdo Dry Valleys, East Antarctica, Antarct. Sci., 20, 1103,
https://doi.org/10.1017/S0954102008001272, 2008. a, b
Foken, T.: The energy balance closure problem: an overview, Ecol. Appl., 18,
1351–1367, https://doi.org/10.1890/06-0922.1, 2008. a
Foken, T., Göckede, M., Mauder, M., Mahrt, L., Amiro, B., and Munger, W.:
Post-Field Data Quality Control, in: Handbook of Micrometeorology, edited byL
Lee, X., Law, B., and Massman, W., Atmospheric and Oceanographic Sciences
Library, Springer Science + Business Media Inc, Dordrecht, 181–208,
2004. a
Foken, T., Mauder, M., Liebethal, C., Wimmer, F., Beyrich, F., Leps, J.-P.,
Raasch, S., DeBruin, H. A. R., Meijninger, W. M. L., and Bange, J.: Energy
balance closure for the LITFASS-2003 experiment, Theor. Appl. Climatol., 101,
149–160, https://doi.org/10.1007/s00704-009-0216-8, 2010. a
Fountain, A. G., Nylen, T. H., Monaghan, A., Basagic, H. J., and Bromwich, D.:
Snow in the McMurdo Dry Valleys, Antarctica, Int. J. Climatol., 39, 633–642, https://doi.org/10.1002/joc.1933, 2009. a, b
Fountain, A. G., Levy, J. S., Gooseff, M. N., and van Horn, D.: The McMurdo
Dry Valleys: A landscape on the threshold of change, Geomorphology, 225,
25–35, https://doi.org/10.1016/j.geomorph.2014.03.044, 2014. a, b
Göckede, M.: Die Verwendung des footprint-Modells nach SCHMID (1997) zur
stabilitätsabhängigen Bestimmung der Rauhigkeitslänge,
Arbeitsergebnisse, Universität Bayreuth, Abt. Mikrometeorologie,
available at: https://epub.uni-bayreuth.de/267/ (last access: 9 May 2017), 2001. a
Gooseff, M. N., Van Horn, D., Sudman, Z., McKnight, D. M., Welch, K. A., and Lyons, W. B.: Stream biogeochemical and suspended sediment responses to permafrost degradation in stream banks in Taylor Valley, Antarctica, Biogeosciences, 13, 1723–1732, https://doi.org/10.5194/bg-13-1723-2016, 2016. a
Gooseff, M. N., Barrett, J. E., Adams, B. J., Doran, P. T., Fountain, A. G.,
Lyons, W. B., McKnight, D. M., Priscu, J. C., Sokol, E. R., Takacs-Vesbach,
C., Vandegehuchte, M. L., Virginia, R. A., and Wall, D. H.: Decadal ecosystem
response to an anomalous melt season in a polar desert in Antarctica, Nature
ecology & evolution, 1, 1334–1338, https://doi.org/10.1038/s41559-017-0253-0, 2017. a, b, c, d, e
Guglielmin, M. and Cannone, N.: A permafrost warming in a cooling Antarctica?,
Climatic Change, 111, 177–195, https://doi.org/10.1007/s10584-011-0137-2, 2012. a
Harris, K. J., Carey, A. E., Lyons, W. B., Welch, K. A., and Fountain, A. G.:
Solute and isotope geochemistry of subsurface ice melt seeps in Taylor
Valley, Antarctica, Geoderma, 119, 548–555, https://doi.org/10.1130/B25913.1, 2007. a, b
Hastings, S. J., Luchessa, S. A., Oechel, W. C., and Tenhunen, J. D.: Standing
biomass and production in water drainages of the foothills of the Philip
Smith Mountains, Alaska, Ecography, 12, 304–311,
https://doi.org/10.1111/j.1600-0587.1989.tb00850.x, 1989. a
Heindel, R. C., Spickard, A. M., and Virginia, R. A.: Landscape-scale soil
phosphorus variability in the McMurdo Dry Valleys, Antarct. Sci., 29,
252–263, https://doi.org/10.1017/S0954102016000742, 2017. a
IPCC: Climate Change 2014: Synthesis Report: Contribution of Working Groups I,
II and III to the Fifth Assessment Report of the Intergovernmental Panel on
Climate Change, Intergovernmental Panel on Climate Change, Geneva,
Switzerland, 2014. a
Kennedy, A. D.: Water as a Limiting Factor in the Antarctic Terrestrial
Environment: A Biogeographical Synthesis, Arctic Alpine Res., 25, 308–315,
https://doi.org/10.2307/1551914, 1993. a
Leclerc, M. Y. and Foken, T.: Footprints in Micrometeorology and Ecology,
Springer Berlin Heidelberg, Berlin, Heidelberg,
https://doi.org/10.1007/978-3-642-54545-0, 2014. a
Levy, J.: How big are the McMurdo Dry Valleys? Estimating ice-free area using
Landsat image data, Antarct. Sci., 25, 119–120,
https://doi.org/10.1017/S0954102012000727, 2013. a
Levy, J.: A hydrological continuum in permafrost environments: The
morphological signatures of melt-driven hydrology on Earth and Mars,
Geomorphology, 240, 70–82, https://doi.org/10.1016/j.geomorph.2014.02.033, 2015. a, b
Levy, J. S. and Schmidt, L. M.: Thermal properties of Antarctic soils: Wetting
controls subsurface thermal state, Antarct. Sci., 28, 361–370,
https://doi.org/10.1017/S0954102016000201, 2016. a, b, c, d
Levy, J. S., Fountain, A. G., Gooseff, M. N., Welch, K. A., and Lyons, W. B.:
Water tracks and permafrost in Taylor Valley, Antarctica: Extensive and
shallow groundwater connectivity in a cold desert ecosystem, Geol. Soc. Am.
Bull., 123, 2295–2311, https://doi.org/10.1130/B30436.1, 2011. a, b, c, d, e, f, g, h, i, j
Levy, J. S., Fountain, A. G., Welch, K. A., and Lyons, W. B.: Hypersaline “wet
patches” in Taylor Valley, Antarctica, Geophys. Res. Lett., 39, L05402,
https://doi.org/10.1029/2012GL050898, 2012. a
Levy, J. S., Fountain, A. G., Dickson, J. L., Head, J. W., Okal, M., Marchant,
D. R., and Watters, J.: Accelerated thermokarst formation in the McMurdo Dry
Valleys, Antarctica, Sci. Rep.-UK, 3, 2269, https://doi.org/10.1038/srep02269, 2013. a, b
Levy, J. S., Fountain, A. G., Gooseff, M. N., Barrett, J. E., Vantreese, R.,
Welch, K. A., Lyons, W. B., Nielsen, U. N., and Wall, D. H.: Water track
modification of soil ecosystems in the Lake Hoare basin, Taylor Valley,
Antarctica, Antarct. Sci., 26, 153–162, https://doi.org/10.1017/S095410201300045X,
2014. a, b, c, d
Liebethal, C. and Foken, T.: Evaluation of six parameterization approaches for
the ground heat flux, Theor. Appl. Climatol., 88, 43–56,
https://doi.org/10.1007/s00704-005-0234-0, 2007. a
Linhardt, T., Levy, J. S., and Thomas, C. K.: Surface energy and mass exchange of a water track and dry soils via eddy-covariance in the summer season 2012–2013 in a polar desert in Taylor Valley, McMurdo Dry Valleys, Antarctica, PANGAEA, https://doi.org/10.1594/PANGAEA.904286, 2019. a
Liu, H., Peters, G., and Foken, T.: New Equations For Sonic Temperature
Variance And Buoyancy Heat Flux With An Omnidirectional Sonic Anemometer,
Bound.-Lay. Meteorol., 100, 459–468, https://doi.org/10.1023/A:1019207031397, 2001. a
Lloyd, C. R., Harding, R. J., Friborg, T., and Aurela, M.: Surface fluxes of
heat and water vapour from sites in the European Arctic, Theor. Appl.
Climatol., 70, 19–33, https://doi.org/10.1007/s007040170003, 2001. a, b, c
Lund, M., Hansen, B. U., Pedersen, S. H., Stiegler, C., and Tamstorf, M. P.:
Characteristics of summer-time energy exchange in a high Arctic tundra heath
2000–2010, Tellus B, 66, 21631, https://doi.org/10.3402/tellusb.v66.21631, 2014. a, b
Lyons, W. B., Fountain, A. G., Doran, P. T., Priscu, J. C., Neumann, K., and Welch, K. A.: Importance of landscape position and
legacy: The evolution of the lakes in Taylor Valley, Antarctica, Freshwater
Biol., 43, 355–367, https://doi.org/10.1046/j.1365-2427.2000.00513.x, 2000. a
Mauder, M. and Foken, T.: Impact of post-field data processing on eddy
covariance flux estimates and energy balance closure, Meteorol. Z., 15,
597–609, https://doi.org/10.1127/0941-2948/2006/0167, 2006. a
McNamara, J. P., Kane, D. L., and Hinzman, L. D.: An analysis of an arctic
channel network using a digital elevation model, Geomorphology, 29, 339–353,
https://doi.org/10.1016/S0169-555X(99)00017-3, 1999. a
Moore, C. J.: Frequency response corrections for eddy correlation systems,
Bound.-Lay. Meteorol., 37, 17–35, https://doi.org/10.1007/BF00122754, 1986. a
Priscu, J. C. (Ed.): Ecosystem Dynamics in a Polar Desert: the Mcmurdo Dry
Valleys, Antarctica, Antar. Res. S., American Geophysical Union,
Washington, DC, 1998. a
Simmons, B. L., Wall, D. H., Adams, B. J., Ayres, E., Barrett, J. E., and
Virginia, R. A.: Long-term experimental warming reduces soil nematode
populations in the McMurdo Dry Valleys, Antarctica, Soil Biol. Biochem., 41,
2052–2060, https://doi.org/10.1016/j.soilbio.2009.07.009, 2009.
a
Thomas, C. K., Law, B. E., Irvine, J., Martin, J. G., Pettijohn, J. C., and
Davis, K. J.: Seasonal hydrology explains interannual and seasonal variation
in carbon and water exchange in a semiarid mature ponderosa pine forest in
central Oregon, J. Geophys. Res., 114, G04006, https://doi.org/10.1029/2009JG001010, 2009. a
Vickers, D. and Mahrt, L.: Quality Control and Flux Sampling Problems for Tower
and Aircraft Data, J. Atmos. Ocean. Tech., 14, 512–526,
https://doi.org/10.1175/1520-0426(1997)014<0512:QCAFSP>2.0.CO;2,
1997. a
Wall, D. H.: Global change tipping points: above- and below-ground biotic
interactions in a low diversity ecosystem, Philos. T. R. Soc. B., 362,
2291–2306, https://doi.org/10.1098/rstb.2006.1950, 2007. a, b, c
Walsh, J. E.: A comparison of Arctic and Antarctic climate change, present and
future, Antarct. Sci., 21, 179–188, https://doi.org/10.1017/S0954102009001874, 2009. a, b
Webb, E. K., Pearman, G. I., and Leuning, R.: Correction of flux measurements
for density effects due to heat and water vapour transfer, Q. J. Roy. Meteor.
Soc., 106, 85–100, https://doi.org/10.1002/qj.49710644707, 1980. a
Westermann, S., Lüers, J., Langer, M., Piel, K., and Boike, J.: The annual surface energy budget of a high-arctic permafrost site on Svalbard, Norway, The Cryosphere, 3, 245–263, https://doi.org/10.5194/tc-3-245-2009, 2009. a, b
Wilczak, J. M., Oncley, S. P., and Stage, S. A.: Sonic Anemometer Tilt
Correction Algorithms, Bound.-Lay. Meteorol., 99, 127–150,
https://doi.org/10.1023/A:1018966204465, 2001. a
Woo, M.-K.: Permafrost hydrology, Springer, Heidelberg,
available at: http://www.loc.gov/catdir/enhancements/fy1409/2011941365-d.html (last access: 26 March 2019),
2012. a
Yergeau, E. and Kowalchuk, G. A.: Responses of Antarctic soil microbial
communities and associated functions to temperature and freeze-thaw cycle
frequency, Environ. Microbiol., 10, 2223–2235,
https://doi.org/10.1111/j.1462-2920.2008.01644.x, 2008. a
Zeglin, L. H., Sinsabaugh, R. L., Barrett, J. E., Gooseff, M. N., and
Takacs-Vesbach, C. D.: Landscape Distribution of Microbial Activity in the
McMurdo Dry Valleys: Linked Biotic Processes, Hydrology, and Geochemistry in
a Cold Desert Ecosystem, Ecosystems, 12, 562–573,
https://doi.org/10.1007/s10021-009-9242-8, 2009. a, b
Short summary
This study presents surface energy fluxes in an Antarctic polar desert in the summer season, comparing wetted soil at a water track with dominating dry soils. Elevated energy uptake, evaporation, and soil heat fluxes at the water track highlight the importance of wetted soils for water and energy cycling in polar deserts. This connection will grow more relevant, as wetted soils are expected to expand due to climate warming, with implications for landscape-scale hydrology and soil ecosystems.
This study presents surface energy fluxes in an Antarctic polar desert in the summer season,...