September 1, 2021

Highlights of GML’s contributions to the 2020 BAMS State of the Climate Report

Scientists from Global Monitoring Laboratory contributed to the Bulletin of American Meteorological Society State of the Climate 2020 report report as editors and authors.
September 1, 2021

Keeping up the standard: Calibrating for accurate ozone monitoring

GML scientist Glen McConville and Lapenta intern Leah Barkai started the calibration of Dobson World standard instrument D083 at the GML Mauna Loa Observatory on July 12, 2021, and will continue the calibration until the end of August.
July 20, 2021

NOAA-NASA collaboration to study the impact of convective storms and the North American Summer Monsoon on stratospheric chemistry

Global Monitoring Laboratory and NASA team up in the DCOTSS (Dynamics and Chemistry of the Summer Stratosphere) project to study the convective impact of the North American Monsoon Anticyclone on stratospheric composition and ozone depletion.
July 14, 2021

GML redesigning its 41-year-old, balloon-borne frost point hygrometer

The Global Monitoring Laboratory is currently redesigning the 41-year-old, balloon-borne frost point hygrometer that measures vertical profiles of water vapor from the surface to about 28 km above sea level in the middle stratosphere.
July 13, 2021

GML homogenizes a Cohesive Record for NOAA Ozone Data

The Global Monitoring Laboratory finished homogenizing multiple NOAA satellite and in-situ ozone records up until 2020, which will be used for trend analysis to understand the current status of ozone depletion in the stratosphere.
June 25, 2021

Rising ozone pollution in Antarctica over the last 26 years

New research has found that surface ozone measured in Antarctica has been rising over the last 26 years (1992-2018).
February 17, 2021

COVID-19 Lockdowns Reduced Ozone Pollution Over the Northern Hemisphere

During COVID-19 shutdowns last year, ozone levels in the lower atmosphere fell by seven percent across much of the Northern Hemisphere, according to a new study.
October 30, 2020

Large, deep Antarctic ozone hole to persist into November

Persistent cold temperatures and strong circumpolar winds supported the formation of a large and deep Antarctic ozone hole that will persist into November, NOAA and NASA scientists reported today.
May 29, 2020

NOAA marks 40 years of ballon-borne water vapor measurements

In April 2020, the Global Monitoring Laboratory’s measurement record of upper atmospheric water vapor over Boulder, Colorado, surpassed 40 years in length.
October 21, 2019

2019 ozone hole smallest on record

Abnormal weather patterns in the upper atmosphere over Antarctica dramatically limited ozone depletion in September and October, resulting in the smallest ozone hole observed since 1982.
November 2, 2018

Ozone hole modest despite conditions ripe for depletion

The ozone hole that forms in the upper atmosphere over Antarctica each September was slightly above average size in 2018, NOAA and NASA scientists reported today.
May 17, 2018

Emissions of ozone-destroying chemical controlled by Montreal Protocol rising again, NOAA data shows

Emissions of one of the chemicals most responsible for the Antarctic ozone hole are on the rise, despite an international treaty that required an end to its production in 2010, a new NOAA study shows.
(View paper here).
November 2, 2017

Warm air helped make 2017 ozone hole smallest since 1988

Measurements from satellites this year showed the hole in Earth’s ozone layer that forms over Antarctica each September was the smallest observed since 1988, scientists from NASA and NOAA announced today.
June 27, 2017

Possible new threat to Earth’s ozone layer

The Montreal Protocol has been hailed for controlling chlorine-based chemicals that created a vast hole in the ozone layer over Antarctica. But new research by British and American scientists suggest a chemical not controlled by the international treaty poses a potential risk to the Earth’s protective ozone layer.
April 27, 2017

Fifty years ago, a historic balloon launch that changed the way we see the ozone layer

What started out as a modest research project driven by scientific curiosity provided the agency that would later become NOAA with some of the first insights into how ozone was distributed in the atmosphere.