Closer Look

This category contains 13 posts

A Closer Look: The Solar Influence

Isn’t the Sun driving current climate change? Last updated: February 9, 2009 No. Perhaps a better question would be, “Is the Sun contributing to current climate change?” In that case, the answer would be yes. The Sun goes through a 22-year cycle consisting of two 11-year components. At the end of each of these 11-year … Continue reading

A Closer Look: The Role of Water Vapor

Isn’t water vapor the primary greenhouse gas? Yes, water vapor is the primary greenhouse gas. In fact, it contributes between 36% and 66% of the Earth’s greenhouse effect that keeps Earth’s temperature hospitable, depending on location and cloud cover. Odds are you’ve noticed the impact of water vapor on temperature without even realizing it. If … Continue reading

A Closer Look: CO2 Fertilization

Won’t increased levels of CO2 just lead to a “greener” planet? Yes, but there’s a catch. Plants utilize CO2 for growth, so, the theory goes, the more CO2 there is, the more plant growth we should see. This is called “CO2 fertilization”. Some species of plant life respond well to it; others don’t. Responsiveness depends … Continue reading



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The Consensus

173 professional scientific organizations (and counting) around the world acknowledge the global impact of rising emissions of greenhouse gases from human activities

The Indicators

Climate Change Indicators Climate Change Indicators NASA GISS - Global Annual Mean Surface Air Temperature ChangeGlobal Temperature Sea level change from 1993 to the present day Global Sea Level Northern Hemisphere Sea Ice Anomaly, 1979-Present Arctic Ice Melt Glacial Retreat, 1980-2010 Glacial Retreat Atmospheric CO2 Concentrations, Mauna Loa Atmospheric CO2 Level