Hydroclimate of the northeastern United States is highly sensitive to solar forcing

@article{Nichols2012HydroclimateOT,
  title={Hydroclimate of the northeastern United States is highly sensitive to solar forcing},
  author={Jonathan E. Nichols and Yongsong Huang},
  journal={Geophysical Research Letters},
  year={2012},
  volume={39}
}
Dramatic hydrological fluctuations strongly impact human society, but the driving mechanisms for these changes are unclear. One suggested driver is solar variability, but supporting paleoclimate evidence is lacking. Therefore, long, continuous, high‐resolution records from strategic locations are crucial for resolving the scientific debate regarding sensitivity of climate to solar forcing. We present a 6800–year, decadally‐resolved biomarker and multidecadally‐resolved hydrogen isotope record… 

Spatial variation of hydroclimate in north-eastern North America during the last millennium

An 8000-year multi-proxy peat-based palaeoclimate record from Newfoundland: Evidence of coherent changes in bog surface wetness and ocean circulation

Energy carried by warm tropical water, transported via the Atlantic Meridional Overturning Circulation (AMOC), plays a vital role in regulating the climate of regions bordering the North Atlantic

Surface and Tropospheric Response of North Atlantic Summer Climate from Paleoclimate Simulations of the Past Millennium

We investigate the effects of solar forcing on the North Atlantic (NA) summer climate, in climate simulations with Earth System Models (ESMs), over the preindustrial past millennium (AD 850–1849). We

Centennial-scale climate change in Ireland during the Holocene

Solar cycles or random processes? Evaluating solar variability in Holocene climate records

High-resolution peatland proxy climate data is examined to determine whether solar signals are present, and finds a wide range of significant periodicities similar to those in records of solar variability: periods between 40–100 years, and 120–140 years are particularly common.

Runoff events and related rainfall variability in the Southern Carpathians during the last 2000 years

A sub-decadal reconstruction of enhanced rainfall events from the Southern Carpathians, Romania using peat geochemistry confirms the ability of models to predict general trends, and major shifts, but highlights the complexity of the region’s hydrological history.

Late Holocene drought, fire, and vegetation in northeastern North America inferred from peatland archives

Understanding the role of fire in the Earth system, and particularly regional controls on its frequency and severity, is critical to risk assessment. Charcoal records from lake sediment and fire-scar

References

SHOWING 1-10 OF 41 REFERENCES

Solar forcing of Holocene climate: New insights from a speleothem record, southwestern United States

Holocene climate change has likely had a profound infl uence on ecosystems and culture. A link between solar forcing and Holocene climate, such as the Asian monsoon, has been shown for some regions,

El Niño as a mediator of the solar influence on climate

[1] Using a climate model of intermediate complexity, we simulate the response of the El Nino–Southern Oscillation (ENSO) system to solar and orbital forcing over the Holocene. Solar forcing is

Millennial-scale storminess variability in the northeastern United States during the Holocene epoch

The data show four peaks in storminess during the past 14 kyr, consistent with long-term changes in the average sign of the Arctic Oscillation, suggesting that modulation of this dominant atmospheric mode may account for a significant fraction of Holocene climate variability in North America and Europe.

Solar Forcing of Drought Frequency in the Maya Lowlands

It is concluded that a significant component of century-scale variability in Yucatan droughts is explained by solar forcing, and some of the maxima in the 208-year drought cycle correspond with discontinuities in Maya cultural evolution, suggesting that the Maya were affected by these bicentennial oscillations in precipitation.

Climate drivers for peatland palaeoclimate records

Amplifying the Pacific Climate System Response to a Small 11-Year Solar Cycle Forcing

Two mechanisms, the top-down stratospheric response of ozone to fluctuations of shortwave solar forcing and the bottom-up coupled ocean-atmosphere surface response, are included in versions of three global climate models, with either mechanism acting alone or both acting together.

Persistent Positive North Atlantic Oscillation Mode Dominated the Medieval Climate Anomaly

A 947-year-long multidecadal North Atlantic Oscillation reconstruction is presented and a persistent positive NAO is found during the Medieval Climate Anomaly to indicate a clear shift to weaker NAO conditions into the Little Ice Age (LIA).

Solar Forcing of Regional Climate Change During the Maunder Minimum

In the model, these occur primarily through a forced shift toward the low index state of the Arctic Oscillation/North Atlantic Oscillations as solar irradiance decreases, which leads to colder temperatures over the Northern Hemisphere continents, especially in winter.

Solar influence on climate during the past millennium: Results from transient simulations with the NCAR Climate System Model

A coupled climate system model was used to determine whether proxy-based irradiance series are capable of inducing climatic variations that resemble variations found in climate reconstructions, and if part of the previously estimated large range of past solar irradiance changes could be excluded.

1400 yr multiproxy record of climate variability from the northern Gulf of Mexico

A continuous decadal-scale resolution record of climate variability over the past 1400 yr in the northern Gulf of Mexico was constructed from a box core recovered in the Pigmy Basin, northern Gulf of