Sentences with phrase «activity over millennia»

A History of Solar Activity over Millennia, Ilya G. Usoskin, 10/2008; read more here.

Not exact matches

The intensification of winter storm activity in Alaska and Northwestern Canada started close to 300 years ago and is unprecedented in magnitude and duration over the past millennium, according to a new study from Dartmouth College.

The team attempted to develop an explanation for the anomalous solar activity data by comparing the features of the 14C change with those of other solar events known to have occurred over the last couple of millennia.

The study revealed important natural fluctuations in climate have occurred over past millennia, which would have naturally led to climatic cooling today in the absence of human activity.

The article, «Extreme rainfall activity in the Australian tropics reflects changes in the El Niño / Southern Oscillation over the last two millennia,» presents a precisely dated stalagmite record of cave flooding events that are tied to tropical cyclones, which include storms such as hurricanes and typhoons.

This graph shows the sun's activity over the last millennium:

In Turkey, a mountainous country largely deforested over the millennia, a leading environmental group, TEMA (Türkiye Erozyona Mücadele, Agaclandirma) has made reforestation its principal activity.

Thus small changes in solar activity produce large changes in the climate system that modulate the Earth energy budget — over millennia at least.

Longer term indicators of solar activity show changes over millennia that mirror the state of upwelling in the Pacific.

I hypothesized here «that upwelling in the Pacific Ocean is modulated by solar activity over periods of decades to millennia — with profound impacts on communities and ecosystems globally.

Changes in solar activity mirror changes in the Pacific state and changes in global temperature over the past millennium.

The LML sedimentary record provides a well - controlled and annually - resolved record of category 2 — 3 hurricane activity in the Boston area over the last millennium.

Read / Purchase the Report Climate Stabilization Targets: Emissions, Concentrations, and Impacts Over Decades to Millennia (2011) Emissions of carbon dioxide from the burning of fossil fuels have ushered in a new epoch where human activities will largely determine the evolution of Earth's climate.

The current warming trend is of particular significance because most of it is extremely likely (greater than 95 percent probability) to be the result of human activity since the mid-20th century and proceeding at a rate that is unprecedented over decades to millennia.1 Earth - orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale.