Oxygen gas in ice cores has shown evidence for abrupt climate change.
Click on image for full size
Image Courtesy of Zina Deretsky/National Science Foundation
Global Warming Can Impact Monsoons and Lower Crop Production
News story originally written on June 11, 2009
Scientists have been studying air that was captured in ice cores and ancient stalagmites found in caves to learn more about past climates. The ice cores were collected from different locations in Antarctica and Greenland. They contain air bubbles that were trapped when the ice.
They found that climate warmed very quickly about 14,700 years ago. When this happened, there were more monsoon rains and more vegetation growth for at least 200 years.
This shift happened over a few decades, which is a very quick time period for climate to change. The researchers warn knowing what happened to past climate may not help us predict future conditions. Monsoon rains play an important role in helping many people on Earth, so this connection between climate change and monsoon patterns may be an dangerous sign of what climate change in the 21st century may bring.
Shop Windows to the Universe Science Store!
Our online store
includes issues of NESTA's quarterly journal, The Earth Scientist
, full of classroom activities on different topics in Earth and space science, ranging from seismology
, rocks and minerals
, and Earth system science
You might also be interested in:
Antarctica is the coldest, windiest, and driest continent on Earth. It is about one and a half times the size of the United States. Almost all of Antarctica is covered with a thick layer of ice called...more
Frozen water is found in many different places on Earth. Snow blankets the ground at mid and high latitudes during winter. Sea ice and icebergs float in the chilly waters of polar oceans. Ice shelves are...more
Earth’s climate is getting warmer. During the past 100 years Earth’s average temperature rose about 0.6° Celsius (1.0° F). Things that people are doing like burning fossil fuels, changing the way land...more
Raindrops form when tiny water droplets collide together in clouds to form bigger ones. When they get too heavy, rain falls out of the clouds. Rain is more than 5mm in diameter. The types of clouds that...more
To figure out what the Earth might be like in the future, scientists need to know how Earth reacts to changes. Models help scientists to better understand how the Earth works and how it will react to climate...more
Scientists have learned that Mount Hood, Oregon's tallest mountain, has erupted in the past due to the mixing of two different types of magma. Adam Kent, a geologist at Oregon State University, says this...more
The Earth's mantle is a rocky, solid shell that is between the Earth's crust and the outer core. The mantle is made up of many different reservoirs that have different chemical compositions. Scientists...more