Tree Rings and Climate Change

Dr. Nitish Priyadarshi writes for American Chronicle,

In 1938, British meteorologist Guy Stewart Callendar made the first proper measurement of global temperature. He gathered data from weather stations worldwide and found that the average temperature of the earth has increased between 1880 and 1930. Sadly, no one took his findings seriously. In 1957, two scientists set up instruments on the Mauna Kea Volcano in Hawaii to measure the level of carbon dioxide in the atmosphere. Its records show that the level of carbon dioxide has been increasing steadily since that time and that the earth is slowly warming up.

For a scientist studying climate change, “eureka” moments are unusually rare. Instead progress is generally made by a painstaking piecing together of evidence from every new temperature measurement, satellite sounding or climate-model experiment. Data get checked and rechecked, ideas tested over and over again.

read more at American Chronicle

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s