Climate Change

A scientific look at global change.
Climate Change Evidence At A Glance
Global Surface Temperature
Data source: NOAA
Atmospheric CO2
Data source: NOAA
thousands of years ago
Sea Level
Data source: CLS/Cnes/Legos
Arctic Sea Ice (September)
Surface Temperature CO2 Sea Level Sea Ice
Climate Change News
By By Jon Erdman
July 21, 2014
In more than 130 years of recorded weather history, June 2014 is the globe's hottest June.
By Brian Kahn
July 18, 2014
Record-breaking warmth and levels of carbon dioxide in the atmosphere combined to produce a world that's 'changing more rapidly ... than at any time in modern civilization,' NOAA warned in a newly released report on the state of the world's climate in 2013.
By By Terrell Johnson
July 12, 2014
Coastal flooding has increased dramatically along the East Coast in recent decades, a new study has found, and it's posing major challenges for local governments in many of the nation's most densely populated cities.
Feeling Skeptical?
Climate Change Facts
Local Climate Change
Temperature Precipitation Snowfall*

Climate Change Blogs

Models and Planning for Climate Change
By: Dr. Ricky Rood
Published: July 25, 2014
Is this actionable knowledge? The answer for many is an, obvious, yes, because people, corporations and governments are taking actions. What is missing in action is any rational, national or global approach to reduce emissions and, therefore, to bound the changes to our weather and climate as incremental changes to our history of the past few centuries. This leads to a situation where the actions that we take are in many ways temporary patches, because over decades and the next few centuries, we will be reliably warming up and sea level will relentlessly rise. There is much more difficultly predicting changes to ecosystems, agriculture, pathogens, political systems and nations. This will require anticipation, to which models will contribute, and the willingness and flexibility to spend on adaptive strategies if we are to obtain societal stability. Those who view models as providing actionable knowledge are more likely to succeed. Otherwise, we will be like those who lived on the shore of modern Turkey at the end of last glacial period, chasing the retreating glaciers and their water into the mountains with their goats and sheep.
Monday It Will be 80 degrees in Yellowknife
By: Dr. Ricky Rood
Published: July 13, 2014
As the polar vortex mutated through the media, it was recognized early as naïve, mocked by comedians, dismissed as scientifically imprecise and politicized. It then becomes a trigger, that supports the doubt that is the goal of the political argument to disrupt climate-change and energy policy. This is a case when the pursuit of simple metaphors and snappy descriptions of complex events fuels the rhetoric. It is a fundamentally flawed tactic of communication and a fundamentally robust way to capture attention and fuel disruption. We must do better.
Sea-Level Variability: A Primer
By: Dr. Ricky Rood
Published: July 9, 2014
Final question: How does climate change affect sea level? The usual suspects are listed as changing the temperature of the ocean and adding water to the oceans from melting ice. These are important and act globally. Climate change and climate variability are also realized in changes to ocean currents. Since these currents are often close to the coasts, there are potential large, rapid and localized changes to sea level. The changes in surface currents in the ocean are related to changes in the stress of winds on the surfaces; hence, there are changes related to atmosphere pressure patterns. There is local variability due to storms and storm surges. And as the ice melts, the land might rise, might fall, also an effect due to climate change. These sources of variability will be important to planning in the next decades, but on the time of a century or longer, adding water to the ocean from melting ice will dominate; there’s really nothing working against it.
Wunderground's Climate Change Position
Based on the evidence, more than 97% of climate scientists have concluded that human-caused climate change is happening. Climate change is already causing significant impacts to people and ecosystems, and these impacts will grow much more severe in the coming years. We can choose to take economically sensible steps to lessen the damage of climate change, and the cost of inaction is much higher than the cost of action.
Climate Summary
State of the Climate
June 2014: Earth's 3rd Consecutive Warmest Month on Record

June 2014 was Earth's warmest June since records began in 1880, said NOAA's National Climatic Data Center (NCDC). NASA rated June 2014 a bit cooler: the 3rd warmest. According to NOAA, the planet has now had three back-to-back warmest months on record--April, May and June of 2014. Global ocean temperatures during June 2014 had the greatest departure from average of any month in recorded history.