scholarly journals Greatly Expanded Tropical Warm Pool and Weakened Hadley Circulation in the Early Pliocene

Science ◽  
2009 ◽  
Vol 323 (5922) ◽  
pp. 1714-1718 ◽  
Author(s):  
C. M. Brierley ◽  
A. V. Fedorov ◽  
Z. Liu ◽  
T. D. Herbert ◽  
K. T. Lawrence ◽  
...  
Keyword(s):  
Hadley Circulation ◽  
Warm Pool ◽  
Early Pliocene ◽  
Tropical Warm Pool

Seasonal patterns of SST diurnal variation over the Tropical Warm Pool region

2016 ◽  
Vol 121 (11) ◽  
pp. 8077-8094 ◽  
Author(s):  
Haifeng Zhang ◽  
Helen Beggs ◽  
Xiao Hua Wang ◽  
Andrew E. Kiss ◽  
Christopher Griffin
Keyword(s):  
Diurnal Variation ◽  
Warm Pool ◽  
Seasonal Patterns ◽  
Tropical Warm Pool

Supplement to The Tropical Warm Pool International Cloud Experiment

2008 ◽  
Vol 89 (5) ◽  
pp. ES21-ES23 ◽  
Author(s):  
Peter T. May ◽  
James H. Mather ◽  
Geraint Vaughan ◽  
Keith N. Bower ◽  
Christian Jakob ◽  
...  
Keyword(s):  
Warm Pool ◽  
Tropical Warm Pool

scholarly journals Impact of the Indo-Pacific Warm Pool on the Hadley, Walker, and Monsoon Circulations

Atmosphere ◽  
2020 ◽  
Vol 11 (10) ◽  
pp. 1030
Author(s):  
Hye-Ryeom Kim ◽  
Kyung-Ja Ha ◽  
Suyeon Moon ◽  
Hyoeun Oh ◽  
Sahil Sharma
Keyword(s):  
Dominant Role ◽  
Hadley Circulation ◽  
Walker Circulation ◽  
Warming Trend ◽  
Warm Pool ◽  
Vital Role ◽  
Natural Variability ◽  
Natural Mode ◽  
Monsoon Circulation ◽  
Pacific Warm Pool

The Indo-Pacific warm pool (IPWP) is enclosed by a 28 °C isotherm and plays a vital role in controlling atmospheric circulations. However, the effects of changes in regional warm pool sea surface temperatures (SSTs) remain unexplored. We divided the IPWP into the Indian and Pacific sectors and distinguished their responses to natural variability and global warming. Furthermore, we examined the impacts of the interannual variability (IAV) in warm pool SST on the tropical Hadley, Walker, and monsoon circulations. The Hadley circulation was affected by warm pool SST warming, i.e., warmer SSTs over the warm pool strengthened the upward branch of Hadley circulation, whereas the downward branch was respectively weakened and strengthened in the Northern and Southern Hemispheres. Walker circulation was strengthened (weakened) in the warming (natural) mode. Consequently, the Walker circulation is weakened since the natural variability of warm pool SST plays a more dominant role rather than the warming trend of SSTs over the warm pool. Furthermore, our analysis displays that warm pool warming has little impact on the monsoon circulation. Our findings highlight the different roles of the IAV of warm pool regions in each tropical circulation as part of the warming trend and natural variability.

Regime Change of the Boreal Summer Hadley Circulation and Its Connection with the Tropical SST

2011 ◽  
Vol 24 (15) ◽  
pp. 3867-3877 ◽  
Author(s):  
Ran Feng ◽  
Jianping Li ◽  
Jincheng Wang
Keyword(s):  
High Frequency ◽  
Regime Change ◽  
Hadley Circulation ◽  
Warm Pool ◽  
Boreal Summer ◽  
Tropical Atlantic ◽  
Asymmetric Mode ◽  
Pacific Warm Pool ◽  
Highly Correlated ◽  
Relationship Of

Abstract The year-to-year variability of the boreal summer [June–August (JJA)] Hadley circulation (HC) is dominated by an asymmetric mode centered in the Northern Hemisphere (AMN) and a quasi-symmetric mode centered at 5°N (QSM). The regime change of the JJA HC is revealed by the phase reversal of the time series of the AMN, showing significant weakening of the northern part of the JJA HC and a reversed seesaw relationship of the zonal-mean updraft over 10°–20°N and around the equator. This transition is accompanied by the southward retreat of the HC core and is well correlated with the weakening of tropical summer monsoons. The strong warming trends of the sea surface temperature over the tropical Atlantic and Indo–west Pacific warm pool play an important role in the regime change of the JJA HC. The high-frequency interannual variability of the JJA HC, however, is mainly featured by the QSM and is highly correlated with the Niño-3.4 index, implying that ENSO’s influence is mainly on the high-frequency interannual time scale.

Late Neogene carbonate productivity and terrigenous input in the central Western Pacific Warm Pool (IODP Site U1488)

2020 ◽  
Author(s):  
Anna Joy Drury ◽  
Thomas Westerhold ◽  
Ana Christina Ravelo ◽  
Ivano Aiello ◽  
Roy Wilkens ◽  
...  
Keyword(s):  
High Resolution ◽  
Late Miocene ◽  
Warm Pool ◽  
Western Pacific ◽  
Early Pleistocene ◽  
Western Pacific Warm Pool ◽  
Early Pliocene ◽  
Pacific Warm Pool ◽  
Late Neogene ◽  
Regional Processes

<p>As the largest modern reservoir of oceanic heat, the Western Pacific Warm Pool (WPWP) plays an important role in atmospheric and oceanic circulation patterns. Little is known about how regional deposition patterns have changed over the past 10 Ma. To understand the interplay between regional processes and global climate evolution in the WPWP, we explore the late Neogene evolution of biogenic (carbonate/siliceous) versus terrigenous deposition.</p><p>We collected high-resolution (2 cm/~0.5 kyr) X-Ray fluorescence (XRF) core scanning data at IODP Site U1488 (Exp. 363) in the central WPWP. These data were especially useful for estimating the carbonate, siliceous and terrigenous components below 65 m CCSF, where the shipboard track data were less robust. The shipboard splice was verified and revised using the Ba/Sr ratio to ensure a continuous composite section down to ~330 m revised CCSF-A at Site U1488. Fe and Si likely reflect terrigenous and partially biogenic silica components. We calibrated the high-resolution ln(Ca/K) record to %CaCO<sub>3</sub> using discrete shipboard %CaCO<sub>3</sub> measurements.</p><p>Fe and Si decrease, whilst ln(Ca/K) increases downcore, in agreement with shipboard data showing increasing %CaCO<sub>3</sub> and decreasing terrigenous/siliceous input­. During the late Pleistocene, the site shows high amplitude %CaCO<sub>3</sub>, Fe and Si cycles superimposed on low carbonate. The amplitude decreases during the early Pleistocene-mid Pliocene, although clear variability remains. The early Pliocene-late Miocene is dominated by high CaCO<sub>3</sub> (80-90%). The %CaCO<sub>3</sub>, Fe and Si variability is considerably reduced, although clear obliquity-precession interference patterns are visible, in addition to longer-term ~400 kyr eccentricity modulation. The high-carbonate interval at IODP Site U1488 likely reflects the early Pliocene to late Miocene Biogenic Bloom (LMBB). The expression of the LMBB in the WPWP is distinctly different to the Atlantic and eastern equatorial Pacific. This indicates that although productivity was enhanced during the late Miocene-early Pliocene, regional processes determined the exact expression and timing of the LMBB in different areas.</p>

The Tropical Warm Pool International Cloud Experiment

2008 ◽  
Vol 89 (5) ◽  
pp. 629-646 ◽  
Author(s):  
Peter T. May ◽  
James H. Mather ◽  
Geraint Vaughan ◽  
Christian Jakob ◽  
Greg M. McFarquhar ◽  
...  
Keyword(s):  
Warm Pool ◽  
Tropical Warm Pool

scholarly journals On the cumulus diurnal cycle over the tropical warm pool

2016 ◽  
Vol 8 (2) ◽  
pp. 669-690 ◽  
Author(s):  
James H. Ruppert ◽  
Richard H. Johnson
Keyword(s):  
Diurnal Cycle ◽  
Warm Pool ◽  
Tropical Warm Pool
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