Estimation of the time series of the meridional heat transport across 15°N in the Pacific Ocean from Argo and satellite data

2015 ◽  
Vol 120 (4) ◽  
pp. 3043-3060 ◽  
Author(s):  
Tingting Yang ◽  
Yongsheng Xu
Keyword(s):  
Time Series ◽  
Pacific Ocean ◽  
Heat Transport ◽  
Satellite Data ◽  
Meridional Heat Transport ◽  
The Pacific ◽  
The Pacific Ocean

scholarly journals Investigating links between rainfall variations in the Ogooué River basin and ENSO in the Pacific Ocean over the period 1940–1999

2021 ◽  
Vol 384 ◽  
pp. 181-186
Author(s):  
Sakaros Bogning ◽  
Frédéric Frappart ◽  
Gil Mahé ◽  
Adrien Paris ◽  
Raphael Onguene ◽  
...  
Keyword(s):  
Time Series ◽  
Pacific Ocean ◽  
River Basin ◽  
Southern Oscillation ◽  
Rainfall Variability ◽  
The Pacific ◽  
Basin Scale ◽  
The Pacific Ocean ◽  
Wavelet Coherence Analysis ◽  
Enso Index

Abstract. This paper investigates links between rainfall variability in the Ogooué River Basin (ORB) and El Niño Southern Oscillation (ENSO) in the Pacific Ocean. Recent hydroclimatology studies of the ORB and surrounding areas resulting in contrasting conclusions about links between rainfall variability and ENSO. Thus, to make the issue clearer, this study investigates the links between ENSO and rainfall in the ORB over the period 1940–1999. The principal component analysis of monthly rainfall in the ORB was done. The temporal mode of the first component corresponds to the interannual variations of rainfall on the ORB. Also, the pattern of the spatial mode of the first component shows that the ORB is a homogeneous hydroclimatic zone. However, no leading mode is significantly correlated to the ENSO index. A cross-wavelet analysis of the time series of basin-scale rainfall and the ENSO index was therefore carried out. The result is a set of periodogram structures corresponding to some ENSO episodes recorded over the study period. And wavelet coherence analysis of both time series confirms that there are significant links between ENSO and rainfall in the ORB.

The variability of the sediment plume and ocean circulation features of the Nass River Estuary, British Columbia

2017 ◽  
Vol 2 (2) ◽  
Author(s):  
David B. Fissel ◽  
Yuehua Lin ◽  
Alison Scoon ◽  
Jose Lim ◽  
Leslie Brown ◽  
...  
Keyword(s):  
British Columbia ◽  
High Resolution ◽  
Pacific Ocean ◽  
Ocean Circulation ◽  
Satellite Data ◽  
Tidal Currents ◽  
Height Range ◽  
The Pacific ◽  
The Pacific Ocean ◽  
Landsat Satellite

The Nass River discharges into Nass Bay and Iceberg Bay, which are adjoining tidal inlets located within the northern inland waters of British Columbia, Canada. After the Skeena River, the Nass River is the second longest river within northern British Columbia, which discharges directly into Canadian waters of the Pacific Ocean. It is also supports one of the most productive salmon fisheries in northern British Columbia. The Nass River discharges into the eastern end of Nass Bay. Nass Bay, in turn feeds into Portland Canal and the fresh surface waters then flows westward to the Pacific Ocean via Dixon Entrance. The tides in Northern British Columbia are very large with a tidal height range of just over 7 m. Nass Bay is a shallow inlet of less than 10 km in length with typical water depths of than 10 m or less. The existing knowledge of oceanographic processes in Nass and Iceberg Bays was rudimentary until three years ago, when the first modern oceanographic measurements were obtained. In this study, the seasonal and tidal variability of the lateral extent of the Nass River surface plume is mapped from analyses of Landsat satellite data spanning the period from 2008 to 2015. A high resolution coupled three dimensional (3D) hydrodynamic model was developed and implemented, within the widely used and accepted Delft3D modeling framework, which was forced and validated using recent 2013-2016 in-situ oceanographic measurements. The combined satellite and numerical modeling methods are used to study the physical oceanographic and sediment transport regime of Nass and Iceberg Bays and the adjoining waters of Portland Inlet and Observatory Inlet. The ocean circulation of Nass and Iceberg Bays was found to be dominated by tidal currents, and by the highly seasonal and variable Nass River freshwater discharges. Complex lateral spatial patterns in the tidal currents occur due to the opening of the southwestern side of Nass Bay onto the deeper adjoining waters of Iceberg Bay. Surface winds are limited to a secondary role in the circulation variability. The sediment dynamics of the Nass Bay system features a very prominent surface sediment plume present from the time of freshet in mid-spring through to large rainfall runoff events in the fall. The time-varying turbidity distribution and transport paths of the Nass River sediment discharges in the study area were characterized using the model results combined with an analysis of several high-resolution multi-year Landsat satellite data sets.

scholarly journals Nd isotopic structure of the Pacific Ocean 70-30 Ma and numerical evidence for vigorous ocean circulation and ocean heat transport in a greenhouse world

2014 ◽  
Vol 29 (5) ◽  
pp. 454-469 ◽  
Author(s):  
Deborah J. Thomas ◽  
Robert Korty ◽  
Matthew Huber ◽  
Jessica A. Schubert ◽  
Brian Haines
Keyword(s):  
Pacific Ocean ◽  
Heat Transport ◽  
Ocean Circulation ◽  
Ocean Heat Transport ◽  
Numerical Evidence ◽  
The Pacific ◽  
The Pacific Ocean

scholarly journals Closing the Pacific Rainfall Data Void

Eos ◽  
2016 ◽  
Vol 97 ◽  
Author(s):  
Ethan Wright ◽  
Jessica Sutton ◽  
Nicholas Luchetti ◽  
Michael Kruk ◽  
John Marra
Keyword(s):  
Pacific Ocean ◽  
Satellite Data ◽  
Rainfall Data ◽  
The Pacific ◽  
The Pacific Ocean

A new climatology tool uses satellite data to map precipitation in a data-sparse region of the Pacific Ocean.

Sign in / Sign up

Export Citation Format

Share Document