Author
Xiaoping Feng
Other affiliations: Lamont–Doherty Earth Observatory
Bio: Xiaoping Feng is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Holocene & Climate change. The author has an hindex of 5, co-authored 9 publications receiving 68 citations. Previous affiliations of Xiaoping Feng include Lamont–Doherty Earth Observatory.
Papers
More filters
••
TL;DR: In this article, the authors report a well-dated, quantitative, mean annual air temperature (MAAT) record with ∼10-yr resolution for the Common Era derived from a sediment core collected at a small alpine lake in remote subtropical southwestern China, and based on a site-specific temporal calibration between down-core analyses of brGDGTs and instrumental data for the interval 1959-2015 AD.
55 citations
••
Chinese Academy of Sciences1, Nanjing University2, Australian National University3, National Oceanography Centre, Southampton4, Ohio State University5, Sun Yat-sen University6, Nanjing University of Information Science and Technology7, University of Hong Kong8, Northeast Normal University9, Lehigh University10, Jiangsu Normal University11
TL;DR: Wang et al. as mentioned in this paper reported paired mean annual air temperature and monsoon intensity proxy records over the past 88,000 years from Lake Tengchongqinghai in southwestern China.
Abstract: Orbital-scale global climatic changes during the late Quaternary are dominated by high-latitude influenced ~100,000-year global ice-age cycles and monsoon influenced ~23,000-year low-latitude hydroclimate variations. However, the shortage of highly-resolved land temperature records remains a limiting factor for achieving a comprehensive understanding of long-term low-latitude terrestrial climatic changes. Here, we report paired mean annual air temperature (MAAT) and monsoon intensity proxy records over the past 88,000 years from Lake Tengchongqinghai in southwestern China. While summer monsoon intensity follows the ~23,000-year precession beat found also in previous studies, we identify previously unrecognized warm periods at 88,000–71,000 and 45,000–22,000 years ago, with 2–3 °C amplitudes that are close to our recorded full glacial-interglacial range. Using advanced transient climate simulations and comparing with forcing factors, we find that these warm periods in our MAAT record probably depends on local annual mean insolation, which is controlled by Earth’s ~41,000-year obliquity cycles and is anti-phased to annual mean insolation at high latitudes. The coincidence of our identified warm periods and intervals of high-frequent dated archaeological evidence highlights the importance of temperature on anatomically modern humans in Asia during the last glacial stage.
55 citations
••
TL;DR: Wang et al. as mentioned in this paper reported high-resolution and quantitative temperature and precipitation records covering the entire "5000-year" Chinese history in northern China and showed the coincidence in the timing between abrupt cold and dry events and large-scale social unrests and southern migration of nomads.
29 citations
••
24 citations
••
TL;DR: Wang et al. as discussed by the authors reported a ~5000-year record of leafwax hydrogen isotope (δDwax) from a 6.67m-long sediment core collected in Beilianchi (BLC) Lake in the southwestern Chinese Loess Plateau.
Abstract: Numerous paleoclimate records on reconstructed monsoon precipitation isotopes (δDp and δ18Op) have been published to infer past hydroclimate changes in Asian monsoon region. However, there are still debates on whether or not these reconstructed δDp or δ18Op can represent changes of monsoon precipitation. In this study, we report a ~ 5000 year record of leafwax hydrogen isotope (δDwax) from a 6.67-m-long sediment core collected in Beilianchi (BLC) Lake in the southwestern Chinese Loess Plateau. Based on analyses of the instrumental precipitation isotopes, precipitation amounts, and moisture sources, we find that δDp in the southwestern Chinese Loess Plateau shows distinct negative correlation with amounts of summer (from April to September) monsoon precipitation at inter-annual scales. This is further supported by the observed negative relation between precipitation amounts and regional lake-sediments and speleothems inferred δDp (or δ18Op) values at decadal scales over the past 60 years. Therefore, our reconstructed ~ 35-year resolution monsoon precipitation, inferred from δDwax, reveals a long-term decrease since the mid-Holocene. Superimposed on this trend, there are several multi-centennial to millennial-scale fluctuations for increased monsoon precipitation at 4500–4000 years BP, 2900–2400 years BP and 1200–700 years BP and decreased precipitation at 3900–3000 years BP, 2200–1300 years BP, and 500–0 years BP. Reanalyses of instrumental data and Kiel Climate Model on regional atmosphere circulations show that moisture of this region is mainly derived from the western Pacific Ocean through the East Asian summer monsoon circulation at inter-annual to inter-decadal, and millennial timescales. We conclude that monsoon rainfall in the southwestern Chinese Loess Plateau is likely connected with changes in sea surface temperatures and migrations of the ITCZ in the western Pacific Ocean.
19 citations
Cited by
More filters
01 Dec 2013
TL;DR: This paper found that the most intensive glacier shrinkage is in the Himalayan region, whereas glacial retreat in the Pamir Plateau region is less apparent, due to changes in atmospheric circulations and precipitation patterns.
Abstract: Glacial melting in the Tibetan Plateau affects the water resources of millions of people. This study finds that—partly owing to changes in atmospheric circulations and precipitation patterns—the most intensive glacier shrinkage is in the Himalayan region, whereas glacial retreat in the Pamir Plateau region is less apparent.
1,599 citations
01 Apr 2003
TL;DR: In this article, a new concept for investigating the retreat of Kilimanjaro's glaciers, based on the physical understanding of glacier-climate interactions, is presented to investigate the ice recession in a direct manner.
Abstract: In recent years, Kilimanjaro and its vanishing glaciers have become an ‘icon’ of global warming, attracting broad interest. In this paper, a synopsis of (a) field observations made by the authors and (b) climatic data as reported in the literature (proxy and long-term instrumental data) is presented to develop a new concept for investigating the retreat of Kilimanjaro's glaciers, based on the physical understanding of glacier–climate interactions. The concept considers the peculiarities of the mountain and implies that climatological processes other than air temperature control the ice recession in a direct manner. A drastic drop in atmospheric moisture at the end of the 19th century and the ensuing drier climatic conditions are likely forcing glacier retreat on Kilimanjaro. Future investigations using the concept as a governing hypothesis will require research at different climatological scales. Copyright © 2004 Royal Meteorological Society
168 citations
••
Nanjing University1, Chinese Academy of Sciences2, National Oceanography Centre, Southampton3, Australian National University4, Ohio State University5, Sun Yat-sen University6, Nanjing University of Information Science and Technology7, University of Hong Kong8, Lehigh University9, Northeast Normal University10, Jiangsu Normal University11
TL;DR: Wang et al. as mentioned in this paper reported paired mean annual air temperature and monsoon intensity proxy records over the past 88,000 years from Lake Tengchongqinghai in southwestern China.
Abstract: Orbital-scale global climatic changes during the late Quaternary are dominated by high-latitude influenced ~100,000-year global ice-age cycles and monsoon influenced ~23,000-year low-latitude hydroclimate variations. However, the shortage of highly-resolved land temperature records remains a limiting factor for achieving a comprehensive understanding of long-term low-latitude terrestrial climatic changes. Here, we report paired mean annual air temperature (MAAT) and monsoon intensity proxy records over the past 88,000 years from Lake Tengchongqinghai in southwestern China. While summer monsoon intensity follows the ~23,000-year precession beat found also in previous studies, we identify previously unrecognized warm periods at 88,000–71,000 and 45,000–22,000 years ago, with 2–3 °C amplitudes that are close to our recorded full glacial-interglacial range. Using advanced transient climate simulations and comparing with forcing factors, we find that these warm periods in our MAAT record probably depends on local annual mean insolation, which is controlled by Earth’s ~41,000-year obliquity cycles and is anti-phased to annual mean insolation at high latitudes. The coincidence of our identified warm periods and intervals of high-frequent dated archaeological evidence highlights the importance of temperature on anatomically modern humans in Asia during the last glacial stage.
55 citations
01 Dec 2011
TL;DR: In this paper, a compilation of global sea surface temperature (SST) records that span around one glacial cycle or more is compared with changes in the earth's radiative balance over the last 520 000 years, as determined from greenhouse gas concentrations, albedo changes related to ice sheet area and atmospheric dust fluctuations.
Abstract: AbstractA compilation is presented of global sea surface temperature (SST) records that span around one glacial cycle or more, and it is compared with changes in the earth’s radiative balance over the last 520 000 years, as determined from greenhouse gas concentrations, albedo changes related to ice sheet area and atmospheric dust fluctuations, and insolation changes. A first scenario uses global mean values for the radiative changes, and a second scenario uses zonal means for 10° latitude bands for a more regionally specific perspective. On the orbital time scales studied here, a smooth increase of SST response from the equator to high latitudes is found when comparison is made to global mean radiative forcing, but a sharply “stepped” increase at 20°–30° latitude when comparing with the more regionally specific forcings. The mean global SST sensitivities to radiative change are within similar limits for both scenarios, around 0.8 ± 0.4°C (W m−2)−1. Combined with previous estimates of 1.3–1.5 times strong...
52 citations
•
TL;DR: In this paper, the effects of global seawater and local temperature changes can be quantitatively removed, yielding a record of local seawater δ18O, which responds primarily to dilution by local precipitation and runoff.
Abstract: Speleothem CaCO3 δ18O is a commonly employed paleomonsoon proxy. However, inferring local rainfall amount from speleothem δ18O can be complicated due to changing source water δ18O, temperature effects, and rainout over the moisture transport path. These complications are addressed using δ18O of planktonic foraminiferal CaCO3, offshore from the Yangtze River Valley (YRV). The advantage is that the effects of global seawater δ18O and local temperature changes can be quantitatively removed, yielding a record of local seawater δ18O, a proxy that responds primarily to dilution by local precipitation and runoff. Whereas YRV speleothem δ18O is dominated by precession-band (23 ky) cyclicity, local seawater δ18O is dominated by eccentricity (100 ky) and obliquity (41 ky) cycles, with almost no precession-scale variance. These results, consistent with records outside the YRV, suggest that East Asian monsoon rainfall is more sensitive to greenhouse gas and high-latitude ice sheet forcing than to direct insolation forcing.
52 citations