NASA | 2009 Tied For Second Hottest Year Ever Recorded

GISS released an analysis showing 2009 as the second warmest year globally and the warmest in the Southern hemisphere. Over the past three decades, global temperatures have risen by about 1/3 degree Fahrenheit per decade. Since 1880, there's been a 1.5-degree Fahrenheit increase. The warming trend is attributed mainly to rising greenhouse gases. To limit climate change, CO2 emissions need to decrease. Data from weather stations, satellites, and Antarctic research were used in the analysis.

Which year was tied with 2009 as the second warmest year on record globally?

• 2005

• 2003

• 1998

• 2007

Since when have precise temperature records been kept, according to the video?

• 2000

• 1950

• 1900

• 1880

What are the three sources of data used by GISS scientists for their analysis?

• Weather stations, satellite observations, and Antarctic research stations

• Antarctic research stations, volcanic data, and solar activity

• Weather stations, ocean buoys, and volcanic data

• Satellite observations, ocean currents, and solar activity

What is considered the dominant factor driving the rise in global temperatures?

• Ocean currents

• Solar activity variations

• Greenhouse gases

• Volcanic eruptions

To limit climate change, what action is suggested regarding CO2 emissions?

• Ignore CO2 emissions

• Gradually decrease CO2 emissions

• Maintain current CO2 levels

• Increase CO2 emissions