搜索结果: 1-15 共查到“理学 proxy”相关记录24条 . 查询时间(0.062 秒)
Can sparse proxy data constrain the strength of the Atlantic meridional overturning circulation?
sparse proxy data constrain the Atlantic meridional overturning circulation
2014/12/18
In a feasibility study, the potential of proxy data
for the temperature and salinity during the Last Glacial Maximum (LGM, about 19 000 to 23 000 years before present)
in constraining the strength o...
Locating Noctiluca miliaris in the Arabian Sea: An optical proxy approach
Arabian Sea Locating Noctiluca
2014/11/28
Coincident with shifting monsoon weather patterns over India, the phytoplankter Noctiluca miliaris has
recently been observed to be dominating phytoplankton blooms in the northeastern Arabian Sea dur...
The identification of a solar signal in climate records of the last 500 years using proxy and model-based analysis and the implications for natural climate variability
Satellite instruments car the solar constant solar energy output climate the climate warming
2014/10/22
There has been confirmation in the last two decades, through instrumental measurements onboard satellites, that the 'solar constant' does, as has long been hypothesized, vary. While there is no consen...
Diatoms as Recorders of Sea Ice in the Bering and Chukchi Seas: Proxy Development and Application
Bering Sea Diatoms IP25 Marine Isotope Stage 11 Pacific Decadal Oscillation Sea Ice
2014/10/22
The recent, rapid decline in Arctic summer sea ice extent has prompted questions as to the rates and magnitude of previous sea ice decline and the affect of this physical change on icerelated ecosyste...
IP25: A Molecular Proxy of Sea-ice Duration in the Bering and Chukchi Seas
IP25 A Molecular Proxy Sea-ice Duration Bering Chukchi Seas
2014/10/21
Seasonal sea ice is an important component of the global climate system. Sea ice influences exchange rates of heat, moisture, and gas between the ocean and atmosphere. Sea ice also plays critical role...
Rare earth elements in a stalagmite from southwestern Japan: A potential proxy for chemical weathering
stalagmite rare earth elements partitioning paleoenvironment chemical weathering
2014/4/10
This study examines the distribution of rare earth elements (REEs) in an 18–4.5 ka stalagmite in southwestern Japan,
with the aim of assessing the utility of such data in paleoenvironmental reconstru...
A method for filling gaps in solar irradiance and in solar proxy data
filling gaps solar irradiance solar proxy data
2011/7/21
Abstract: Data gaps are ubiquitous in spectral irradiance data, and yet, little effort has been put into finding robust methods for filling them. We introduce a data-adaptive and nonparametric method ...
A method for filling gaps in solar irradiance and in solar proxy data
method filling gaps solar irradiance solar proxy
2011/7/21
Data gaps are ubiquitous in spectral irradiance data, and yet, little effort has been put into finding robust methods for filling them. We introduce a data-adaptive and nonparametric method that allow...
Rare earth elements in the ornithogenic sediments from the Maritime Antarctic: A potential new palaeoecology proxy
Antarctica ornithogenic sediments rare earth elements
2011/4/12
The ornithogenic sediments in the maritime Antarctic are good archives for studying the changes of historical penguin
population. Rare earth elements (REEs) along with biological and lithophile eleme...
A few prospective ideas on climate reconstruction：from a statistical single proxy approach towards a multi-proxy and dynamical approach
climate reconstruction dynamical approach multi-proxy
2009/12/3
Important progresses have been made in palaeoclimatological studies by using statistical methods. But they are in somewhere limited as they take the present as an absolute reference. This is particula...
Changes in atmospheric variability in a glacial climate and the impacts on proxy data：a model intercomparison
atmospheric variability model intercomparison glacial climate
2009/12/3
Using four different climate models, we investigate sea level pressure variability in the extratropical North Atlantic in the preindustrial climate (1750 AD) and at the Last Glacial Maximum (LGM, 21 k...
Characterisation of long-term climate change by dimension estimates of multivariate palaeoclimatic proxy data
long-term climate change dimension estimates multivariate palaeoclimatic proxy data
2009/11/9
The problem of extracting climatically relevant information from multivariate geological records is tackled by characterising the eigenvalues of the temporarily varying correlation matrix. From these ...
Zinc isotope composition of settling particles as a proxy for biogeochemical processes in lakes: Insights from the eutrophic Lake Greifen, Switzerland
Zinc isotope composition a proxy for biogeochemical processes
2009/4/17
The isotope composition of zinc (Zn) was determined in settling particles collected monthly over a year in the
hypolimnion of the eutrophic Lake Greifen (Switzerland) in order to explore the potentia...
Assessing the applicability of Emiliania huxleyi coccolith morphology as a sea-surface salinity proxy
Assessing Emiliania huxleyi coccolith morphology
2009/4/17
Culture experiments were used to assess the applicability of Emiliania huxleyi coccolith morphology as a
palaeo–sea-surface salinity (SSS) proxy. Coccolith morphology was dependent on salinity over a...
Calcium isotopic composition of high-latitude proxy carrier Neogloboquadrina pachyderma (sin.)
isotopic composition high-latitude proxy carrier Neogloboquadrina pachyderma
2009/1/5
The accurate reconstruction of sea surface temperature (SST) history in climate-sensitive regions (e.g. tropical and polar oceans) became a challenging task in palaeoceanographic research. Biogenic sh...