May 15, 2019

US methane emissions flat since 2006 despite increased oil and gas activity: study

Natural gas production in the United States has increased 46 percent since 2006, but there has been no significant increase of total US methane emissions and only a modest increase from oil and gas activity, according to a new NOAA study.
March 22, 2019

Global carbon dioxide growth in 2018 reached 4th highest on record

By the end of 2018, NOAA’s atmospheric observatory at Mauna Loa recorded the fourth-highest annual growth in the concentration of atmospheric carbon dioxide (CO2) in 60 years of record-keeping.
October 31, 2018

Study sheds light on persistent gap in natural gas methane emissions measurements

It’s a question that’s puzzled policymakers, researchers and regulatory agencies for years: How much methane is being emitted from natural gas operations across the U.S.? And why have the two main estimation methods applied across U.S. oil and gas basins always seem to disagree?
June 7, 2018

Another climate milestone on Mauna Loa

Carbon dioxide levels measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory averaged more than 410 parts per million in April and May, the highest monthly averages ever recorded, scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego announced today.
May 30, 2018

NOAA’s greenhouse gas index up 41 percent since 1990

NOAA’s Annual Greenhouse Gas Index, which tracks the warming influence of long-lived greenhouse gases, has increased by 41 percent from 1990 to 2017, up 1 percent from 2016 -- with most of that attributable to rising carbon dioxide levels.
March 27, 2018

New National Academies' report lays out path forward for methane research

A new National Academies of Sciences' report calls on several federal agencies to work together to improve techniques for measuring one of the most important greenhouse gases produced by humans - methane.
January 19, 2018

A climate science milestone on Colorado’s Continental Divide

On January 16, 1968, an air sample collected at Niwot Ridge was measured for carbon dioxide at a lab in Boulder, Colorado--the first measurement for NOAA's Global Greenhouse Gas Reference Network. In the 50 years since, more than 274,000 air samples have been collected at over 60 sites around the globe.
July 12, 2017

After 2000-era plateau, global methane levels hitting new highs

Following a plateau in the early 2000s, global concentrations of the powerful greenhouse gas methane have hit new highs in recent years. Chemical fingerprint tests seem to rule out a major role for fossil fuels. With more than half a dozen possible natural and human sources, how will scientists figure out where it's coming from?
July 11, 2017

NOAA’s Greenhouse Gas Index up 40 percent since 1990

NOAA’s Annual Greenhouse Gas Index, which tracks the warming influence of long-lived greenhouse gases, has increased by 40 percent from 1990 to 2016 — with most of that attributable to rising carbon dioxide levels, according to NOAA climate scientists.
June 12, 2017

As Alaska's North Slope warms, greenhouse gases have nowhere to go but up

The amount of carbon dioxide (CO2) being released from tundra in the northern region of Alaska during early winter has increased 70 percent since 1975, according to a new regional climate paper by scientists participating in a research project funded by NOAA and NASA.
March 24, 2017

NOAA study shows as US drilling surged, methane emissions didn’t

A new NOAA study shows that methane emissions from the United States did not grow significantly from 2000 to 2013 and are not likely to have been an important driver of the increase in atmospheric methane levels observed worldwide after 2007, as other studies have suggested.
March 13, 2017

Carbon dioxide levels rose at record pace for 2nd straight year

Carbon dioxide levels measured at NOAA’s Mauna Loa Baseline Atmospheric Observatory rose by 3 parts per million to 405.1 parts per million (ppm) in 2016, an increase that matched the record jump observed in 2015.
October 6, 2016

Study finds fossil fuel methane emissions greater than previously estimated

Methane emissions from fossil fuel development around the world are up to 60 percent greater than estimated by previous studies, according to new research led by scientists from NOAA and CIRES.
October 3, 2016

Carbon dioxide levels race past troubling milestone

Carbon dioxide levels in the Earth’s atmosphere passed a troubling milestone for good this summer, locking in levels of the heat-trapping gas not seen for millions of years. Every year, the amount of carbon dioxide (CO2) rises during winter and then falls slightly during the Northern Hemisphere’s growing season, as plants take up this greenhouse gas during photosynthesis. But this year, for the first time since before the Ice Age, CO2 will not fall below 400 ppm.
September 22, 2016

ESRL's Brad Hall wins Governor's Award for High Impact Research

Brad Hall, a research scientist in the Global Monitoring Division of NOAA/ESRL, has been named a winner of the 2016 Governor's Award for High-Impact Research for his work on improving existing techniques to make calibration standards and measurements of very low concentrations of greenhouse gases such as carbon dioxide, methane, nitrous oxide and ozone-depleting gases like chlorofluorocarbons.