Investigating sea surface temperature diurnal variation over the Tropical Warm Pool using MTSAT-1R data

2016 ◽  
Vol 183 ◽  
pp. 1-12 ◽  
Author(s):  
Haifeng Zhang ◽  
Helen Beggs ◽  
Leon Majewski ◽  
Xiao Hua Wang ◽  
Andrew Kiss
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Diurnal Variation ◽  
Warm Pool ◽  
Sea Surface ◽  
Tropical Warm Pool

Coupled Mg/Ca and clumped isotope measurements at IODP Site U1488 confirm absence of Plio-Pleistocene sea surface temperature cooling in the Western Pacific Warm Pool

2020 ◽  
Author(s):  
Niklas Meinicke ◽  
Maria Reimi ◽  
Christina Ravelo ◽  
Nele Meckler
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Planktonic Foraminifera ◽  
Warm Pool ◽  
Western Pacific ◽  
Sea Surface ◽  
Western Pacific Warm Pool ◽  
Pacific Warm Pool ◽  
The Western Pacific

<p>The Western Pacific Warm Pool (WPWP) as a major source of heat and water vapor has a crucial influence on climate dynamics both in the tropics and globally. Yet, there is conflicting proxy evidence regarding the evolution of WPWP temperatures since the Miocene. On the one hand TEX<sub>86</sub> data suggest a gradual cooling by ~2℃ (O’Brian et al., 2014, Zhang et al., 2014) from the Pliocene to today, while faunal (planktonic foraminifera) sea surface temperature estimates (Dowsett, 2007) and Mg/Ca data measured in planktonic foraminifera (Wara et al., 2005) on the other hand indicate the absence of any long-term temperature trends. It has been suggested that Mg/Ca temperatures could on these time scales be biased by long-term changes of the Mg/Ca ratio of seawater (Evans et al., 2016). To test the influence of the proposed seawater changes on Mg/Ca we combined data from two independent temperature proxies, Mg/Ca and clumped isotopes, measured on two species of planktonic foraminifera from IODP Site U1488 in the central WPWP. Our study finds good agreement between both proxies thereby verifying the validity of Mg/Ca records from the WPWP and confirming the absence of a Plio-Pleistocene cooling trend for the WPWP. This finding suggests that the persistent disagreement between foraminifer-based proxies such as Mg/Ca and biomarker data might be caused by different environmental parameters being recorded in the two archives.</p><p> </p><p>References:</p><p>O’Brien CL, Foster GL, Martínez-Botí MA, Abell R, Rae JWB, Pancost RD. High sea surface temperatures in tropical warm pools during the Pliocene. Nature Geoscience. 2014;7(8):606-11.</p><p>Zhang YG, Pagani M, Liu Z. A 12-million-year temperature history of the tropical Pacific Ocean. Science. 2014;344(6179):84-7.</p><p>Dowsett H. Faunal re-evaluation of Mid-Pliocene conditions in the western equatorial Pacific. Micropaleontology. 2007;53(6):447-56.</p><p>Wara MW, Ravelo AC, Delaney ML. Permanent El Nino-like conditions during the Pliocene warm period. Science. 2005;309(5735):758-61.</p><p>Evans D, Brierley C, Raymo ME, Erez J, Müller W. Planktic foraminifera shell chemistry response to seawater chemistry: Pliocene–Pleistocene seawater Mg/Ca, temperature and sea level change. Earth and Planetary Science Letters. 2016;438:139-48.</p>

Mid-Pliocene equatorial Pacific sea surface temperature reconstruction: a multi-proxy perspective

2008 ◽  
Vol 367 (1886) ◽  
pp. 109-125 ◽  
Author(s):  
Harry J Dowsett ◽  
Marci M Robinson
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Temperature Reconstruction ◽  
Warm Pool ◽  
Equatorial Pacific ◽  
Sea Surface ◽  
Mean Annual Temperature ◽  
Meridional Heat Transport ◽  
Eastern Equatorial Pacific ◽  
Past Climate Change

The Mid-Pliocene is the most recent interval of sustained global warmth, which can be used to examine conditions predicted for the near future. An accurate spatial representation of the low-latitude Mid-Pliocene Pacific surface ocean is necessary to understand past climate change in the light of forecasts of future change. Mid-Pliocene sea surface temperature (SST) anomalies show a strong contrast between the western equatorial Pacific (WEP) and eastern equatorial Pacific (EEP) regardless of proxy (faunal, alkenone and Mg/Ca). All WEP sites show small differences from modern mean annual temperature, but all EEP sites show significant positive deviation from present-day temperatures by as much as 4.4°C. Our reconstruction reflects SSTs similar to modern in the WEP, warmer than modern in the EEP and eastward extension of the WEP warm pool. The east–west equatorial Pacific SST gradient is decreased, but the pole to equator gradient does not change appreciably. We find it improbable that increased greenhouse gases (GHG) alone would cause such a heterogeneous warming and more likely that the cause of Mid-Pliocene warmth is a combination of several forcings including both increased meridional heat transport and increased GHG.

Glacial sea surface temperature reconstruction in the west pacific warm pool

1998 ◽  
Vol 43 (S1) ◽  
pp. 89-89
Author(s):  
G. R. Min ◽  
F. W. Taylor ◽  
J. Recy ◽  
G. S. Burr ◽  
R. L. Edwards ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Temperature Reconstruction ◽  
Warm Pool ◽  
Sea Surface ◽  
The West ◽  
West Pacific ◽  
Pacific Warm Pool

MIS 7 interglacial sea-surface temperature and salinity reconstructions from a southwestern subtropical Pacific coral

2013 ◽  
Vol 80 (3) ◽  
pp. 575-585 ◽  
Author(s):  
Ryuji Asami ◽  
Yasufumi Iryu ◽  
Kimio Hanawa ◽  
Takashi Miwa ◽  
Peter Holden ◽  
...  
Keyword(s):  
Pacific Ocean ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
Isotope Composition ◽  
Austral Summer ◽  
Warm Pool ◽  
Sea Surface ◽  
South Pacific Convergence Zone ◽  
Carbon And Oxygen Isotope ◽  
Niue Island

We generated a 5.5-yr snapshot of biweekly-to-monthly resolved time series of carbon and oxygen isotope composition (δ13C and δ18O) and Sr/Ca and Mg/Ca from annually banded aragonite skeleton of a ~ 197 ka pristine Porites coral collected at Niue Island (19°00′S, 169°50′W) in the southwestern subtropical Pacific Ocean. This report is the first of a high-resolution coral-based paleoclimate archive during the Marine Isotope Stage (MIS) 7 interglacial. Statistical results suggest that annual averages of sea-surface temperature (SST) and salinity (SSS) at ~ 197 ka were not significantly different from and ~ 1.2 higher than at present, respectively. Monthly mean variations showed increased SSS at ~ 197 ka that was higher (1.4–1.9 relative to today) in the austral summer than in the austral winter. Monthly SST and SSS anomalies at ~ 197 ka indicated smaller amplitudes by ~ 0.3°C (11%) and ~ 0.3 (24%) relative to the present, possibly suggesting less influence of interannual climate variability around Niue. Our results, taken together with other climate proxy records, imply seasonal and interannual modulation of thermal and hydrological conditions, different from today, in the southwestern subtropical Pacific Ocean associated with the Western Pacific Warm Pool and the South Pacific Convergence Zone variability during the MIS 7 interglacial.

Exploring records of typhoon variability in eastern China over the past 2000 years

2020 ◽  
Vol 132 (11-12) ◽  
pp. 2243-2252 ◽  
Author(s):  
Yang Yang ◽  
Liang Zhou ◽  
Alexandre Normandeau ◽  
Jianjun Jia ◽  
Qijun Yin ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Sea Surface Temperature ◽  
East Asian Monsoon ◽  
Southern Oscillation ◽  
Eastern China ◽  
Warm Pool ◽  
Sea Surface ◽  
Northwestern Pacific ◽  
The Past ◽  
Past 2000 Years

Abstract How climate controls tropical cyclone variability has critical implications for modern human society but is not well understood due to the short length of observational records. To probe this knowledge gap, we present a synthesis of intense typhoon activity from the northwestern Pacific over the past 2000 years, which is supported by a new, well-resolved tidal flat sedimentary record from the Jiangsu coast, eastern China. The record reveals nine intervals of typhoon frequency, indicating that the frequency of intense typhoons has varied on multi-centennial scales over the past 2000 years. Our synthesis shows strong evidence for a seesaw pattern of intense typhoon frequency between southeastern China and Japan and Korea. This pattern can be explained by the El Niño and Southern Oscillation–East Asian Monsoon–sea surface temperature hypothesis, which potentially explains the basin-wide typhoon climate in the northwestern Pacific region. A shift in typhoon activity was identified from 550–280 to 280–50 yr B.P. during the Little Ice Age, when typhoon activity changed from active to quiescent or vice versa. Centennial-scale shifts in Intertropical Convergence Zone and Western Pacific Warm Pool sea surface temperature are likely to be the primary forcing mechanisms driving this shift. Results obtained here provide links between typhoon activity and the El Niño and Southern Oscillation, the East Asian Monsoon, and the Western Pacific Warm Pool sea surface temperature, and therefore improve our ability to fully assess intense typhoon activity in future climate warming.

scholarly journals Variations of the Last Glacial Warm Pool: Sea surface temperature contrasts between the open western Pacific and South China Sea

2005 ◽  
Vol 20 (2) ◽  
pp. n/a-n/a ◽  
Author(s):  
Muhong Chen ◽  
Qianyu Li ◽  
Fan Zheng ◽  
Xianzan Tan ◽  
Rong Xiang ◽  
...  
Keyword(s):  
South China Sea ◽  
Surface Temperature ◽  
Sea Surface Temperature ◽  
South China ◽  
Warm Pool ◽  
Western Pacific ◽  
Sea Surface ◽  
China Sea ◽  
Last Glacial ◽  
The Last Glacial
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