Results 71 to 80 of about 119,043 (304)

Ocean acidification at the crossroads I: Harmonizing unpurified and purified meta‐cresol purple spectrophotometric pHT measurements based on absorbance data

Limnology and Oceanography: Methods, EarlyView.
Abstract Consistent monitoring of seawater spectrophotometric pH on the total hydrogen ion scale (pHT) has been questioned by an evolving method, with changes in parameterization and the purity of the meta‐cresol purple (mCP). Using real seawater samples, we demonstrate that spectrophotometric pHT measurements obtained with unpurified (UNPUR) and ...
Marta Álvarez, Maribel I. García‐Ibáñez, Rubén Acerbi, Rocío Santiago‐Domenech, Elisa F. Guallart, Noelia M. Fajar, Lisandro Arbilla   +6 more
wiley   +1 more source

Identification and Comparison of Gray Literature in Two Polar Libraries: Australian Antarctic Division and Scott Polar Research Institute [PDF]

, 2009
Gray literature collections were investigated and compared at the libraries of the Australian Antarctic Division (AAD) and the Scott Polar Research Institute (SPRI) in order to improve accessibility.
Carle, Daria O.
core  

The impact of the mixing properties within the Antarctic stratospheric vortex on ozone loss in spring [PDF]

, 2001
Calculations of equivalent length from an artificial advected tracer provide new insight into the isentropic transport processes occurring within the Antarctic stratospheric vortex. These calculations show two distinct regions of approximately equal area:
Adrian M. Lee, Anna E. Jones, Butchart, Cacciani, Chen, Chipperfield, Chipperfield, Dunkerton, Emily F. Shuckburgh, Farman, Forster, Haynes, Hoskins, Hoskins, Howard K. Roscoe, Hugh C. Pumphrey, Jones, Juckes, Kirchhoff, Lee, Lubin, Martin W. Morrey, McCormick, Molina, Nakamura, Nakamura, Norton, Paparella, Peter H. Haynes, Prather, Pumphrey, Roscoe, Shindell, Shine, Shuckburgh, Swinbank, Tao, Waters, Waugh   +38 more
core   +1 more source

Coccolithophore biodiversity controls carbonate export in the Southern Ocean [PDF]

, 2020
Southern Ocean waters are projected to undergo profound changes in their physical and chemical properties in the coming decades. Coccolithophore blooms in the Southern Ocean are thought to account for a major fraction of the global marine calcium ...
Abrantes, Fatima, Ballegeer, Anne-Marie, Bostock, Helen, Davies, Diana M., Eriksen, Ruth S., Flores, José A., Fuertes, Miguel A., Nodder, Scott D., Northcote, Lisa C., Rigual Hernández, Andrés S., Sierro, Francisco J., Trull, Thomas W.   +11 more
core   +3 more sources

Sediment trap preservative choice impacts particle‐associated microbial community composition

Limnology and Oceanography: Methods, EarlyView.
Abstract Understanding and quantifying the microbial contribution to particulate organic matter (POM) flux and carbon cycling in the ocean relies largely on the collection of sinking POM. A critical aspect of evaluating microbial communities on sediment trap‐collected POM is their preservation until recovery and sample processing.
Nicola L. Paul, Colleen A. Durkin, Sebastian Sudek, Matthieu Bressac, Philip W. Boyd, Eric J. Tappa, Claudia R. Benitez‐Nelson, Alyson E. Santoro   +7 more
wiley   +1 more source

Performance of a glider‐mounted multifrequency echosounder for measuring the vertical distribution and abundance of large pelagic copepods

Limnology and Oceanography: Methods, EarlyView.
Abstract The difficulty of sampling zooplankton communities in situ has driven advancements in autonomous, remote sensing technology. The goal of this paper was to perform a gear comparison study testing the performance of one such piece of technology—a glider‐mounted four‐frequency echosounder—against traditional shipboard methods of measuring ...
Delphine Mossman, Joseph D. Warren, Natasha J. Hynes, Kimberley T. A. Davies   +3 more
wiley   +1 more source

A Polar Rover for Large-Scale Scientific Surveys: Design, Implementation and Field Test Results

International Journal of Advanced Robotic Systems, 2015
Exploration of polar regions is of great importance to scientific research. Unfortunately, due to the harsh environment, most of the regions on the Antarctic continent are still unreachable for humankind.
Yuqing He, Cheng Chen, Chunguang Bu, Jianda Han   +3 more
doaj   +1 more source

The Climatology and Trend of Surface Wind Speed over Antarctica and the Southern Ocean and the Implication to Wind Energy Application

Atmosphere, 2020
Surface wind trends and variability over Antarctica and the Southern Ocean and their implications to wind energy in the region are analyzed using the gridded ERA-Interim reanalysis data between 1979 and 2017 and the Self-Organizing Map (SOM) technique ...
Lejiang Yu, Shiyuan Zhong, Bo Sun
doaj   +1 more source

Residence Time and Transformation of Warm Circumpolar Deep Water on the Antarctic Continental Shelf

Geophysical Research Letters, 2021
Inflow of warm modified Circumpolar Deep Water (CDW) onto the Antarctic continental shelf and into ice shelf cavities is a key driver of Antarctic ice shelf mass loss.
V. Tamsitt, M. H. England, S. R. Rintoul, A. K. Morrison   +3 more
doaj   +1 more source

DNA sequence evidence for speciation, paraphyly and a Mesozoic dispersal of cancellothyridid articulate brachiopods [PDF]

, 2002
Because the classification of extant and fossil articulate brachiopods is based largely upon shell characters observable in fossils, it identifies morphotaxa whose biological status can, in practice, best be inferred from estimates of genetic divergence.
Cohen, B.L., Luter, C.
core   +1 more source