scholarly journals Observed Ocean Bottom Temperature Variability at Four Sites in the Northwestern Argentine Basin: Evidence of Decadal Deep/Abyssal Warming Amidst Hourly to Interannual Variability During 2009–2019

2020 ◽  
Vol 47 (18) ◽  
Author(s):  
Christopher S. Meinen ◽  
Renellys C. Perez ◽  
Shenfu Dong ◽  
Alberto R. Piola ◽  
Edmo Campos
Keyword(s):  
Interannual Variability ◽  
Temperature Variability ◽  
Ocean Bottom ◽  
Bottom Temperature ◽  
Argentine Basin

scholarly journals Implications of ocean bottom temperatures on the catch ability of American lobster

2019 ◽  
Vol 79 ◽  
pp. 03007
Author(s):  
Xiaoxu Zhao ◽  
Pengwen Ding ◽  
Jilei Pang
Keyword(s):  
New England ◽  
Gulf Of Maine ◽  
Recent Decade ◽  
Temporal Variations ◽  
Effect Of Temperature ◽  
American Lobster ◽  
Ocean Bottom ◽  
Bottom Temperature ◽  
Using Data ◽  
The Impact

Since the beginning of the satellite era, the general trend of global and regional sea-surface temperature (SST) have continued to rise and, in the recent decade, the rate of warming has increased dramatically in the Gulf of Maine. However, due to variations in thermal stratification in the water column, SST is not the best measure to determine the impact on benthic organisms. So understanding the spatial and temporal variations of the ocean bottom temperature is critical to fisheries management. Since 2001, the Environmental Monitors on Lobster Traps (eMOLT) project has been implemented. The lobster fishermen have volunteered to collect bottom temperature and American lobster catch data from dozens of locations off the New England coast. Now we can use these data to analyze the relationship between ocean bottom temperature and lobster catch. Using data collected over the past decade, we examine the effect of temperature, temperature change, soak time and other factors on the catchability of lobsters. Our results suggest that there is a increase in catchability at the same time there is a) a temperature rise over many years and b) day-to-day temperature changes.

scholarly journals Mass-balance characteristics of arctic glaciers

2005 ◽  
Vol 42 ◽  
pp. 225-229 ◽  
Author(s):  
Roger J. Braithwaite
Keyword(s):  
Mass Balance ◽  
Interannual Variability ◽  
Temperature Variability ◽  
The Arctic ◽  
Annual Precipitation ◽  
Northern Eurasia ◽  
Ice Caps ◽  
Mountain Glaciers ◽  
Arctic Alaska ◽  
Low Sensitivity

AbstractA survey of available mass-balance data shows that glaciers on arctic islands, i.e. mountain glaciers and ice caps in northern Canada, Greenland, Svalbard and the Eurasian islands, share mass-balance characteristics of low annual amplitude and small interannual variability. By contrast, glaciers around the Arctic (e.g. in Alaska, Iceland, mainland Scandinavia and northern Eurasia) can have exceptionally large annual amplitude and interannual variability but otherwise share characteristics with glaciers in lower latitudes. The arctic island glaciers occur in areas with low annual precipitation and high annual temperature variability, i.e. in dry-cold or continental regions. Most glaciers surrounding the Arctic (Alaska, Iceland and Scandinavia) occur in areas with high annual precipitation and low annual temperature variability, i.e. in wet-warm or maritime regions. Earlier mass-balance modelling showed that arctic island glaciers have low sensitivity to temperature changes consistent with their low mass-balance amplitude. However, very large changes in mass balance could occur on arctic island glaciers if the sea ice surrounding the arctic islands were reduced so that the climate of the arctic islands becomes more maritime.

scholarly journals The Seasonal Cycle and Interannual Variability in Stratospheric Temperatures and Links to the Brewer–Dobson Circulation: An Analysis of MSU and SSU Data

2011 ◽  
Vol 24 (23) ◽  
pp. 6243-6258 ◽  
Author(s):  
Paul J. Young ◽  
David W. J. Thompson ◽  
Karen H. Rosenlof ◽  
Susan Solomon ◽  
Jean-François Lamarque
Keyword(s):  
Interannual Variability ◽  
Time Scales ◽  
High Latitude ◽  
Seasonal Cycle ◽  
Lower Stratosphere ◽  
Phase Relationship ◽  
Cold Season ◽  
Global Scale ◽  
Temperature Variability ◽  
Opposite Hemisphere

Abstract Previous studies have shown that lower-stratosphere temperatures display a near-perfect cancellation between tropical and extratropical latitudes on both annual and interannual time scales. The out-of-phase relationship between tropical and high-latitude lower-stratospheric temperatures is a consequence of variability in the strength of the Brewer–Dobson circulation (BDC). In this study, the signal of the BDC in stratospheric temperature variability is examined throughout the depth of the stratosphere using data from the Stratospheric Sounding Unit (SSU). While the BDC has a seemingly modest signal in the annual cycle in zonal-mean temperatures in the mid- and upper stratosphere, it has a pronounced signal in the month-to-month and interannual variability. Tropical and extratropical temperatures are significantly negatively correlated in all SSU channels on interannual time scales, suggesting that variations in wave driving are a major factor controlling global-scale temperature variability not only in the lower stratosphere (as shown in previous studies), but also in the mid- and upper stratosphere. The out-of-phase relationship between tropical and high latitudes peaks at all levels during the cold-season months: December–March in the Northern Hemisphere and July–October in the Southern Hemisphere. In the upper stratosphere, the out-of-phase relationship with high-latitude temperatures extends beyond the tropics and well into the extratropics of the opposite hemisphere. The seasonal cycle in stratospheric temperatures follows the annual march of insolation at all levels and latitudes except in the mid- to upper tropical stratosphere, where it is dominated by the semiannual oscillation. Mid- to upper-stratospheric temperatures also exhibit a distinct but small semiannual cycle at extratropical latitudes.

Three forms of variability in Argentine Basin ocean bottom pressure

2007 ◽  
Vol 112 (C1) ◽  
Author(s):  
C. W. Hughes ◽  
V. N. Stepanov ◽  
L.-L. Fu ◽  
B. Barnier ◽  
G. W. Hargreaves
Keyword(s):  
Ocean Bottom ◽  
Bottom Pressure ◽  
Ocean Bottom Pressure ◽  
Argentine Basin
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