Using measurements taken worldwide, scientists estimated that 2015’s global average carbon dioxide concentration was 399.4 parts per million (ppm), a new record high. At Mauna Loa Observatory in Hawai’i, where atmospheric carbon dioxide has been recorded longer than anywhere else in the world, the annual average carbon dioxide concentration was 400.8—also a new record, and a new milestone.
Robert (Bob) D. Evans of ESRL Global Monitoring Division receives the prestigious IO3C Farman Award Nomination For Sustaining a Long-term Inter-calibrated World-wide Dobson Total Ozone Observing Network. The "Joseph C. Farman Award" is granted to one or more outstanding scientists who have created and used high-quality, long-term time series of atmospheric measurements related to the study of atmospheric ozone and/or surface ultraviolet radiation.
The Atmospheric Tomography Mission (ATom) is a NASA-funded multi-agency effort using the NASA DC-8 research aircraft to systematically sample trace gases and aerosols from sea level to the stratosphere on 10 pole-to-pole flights covering the Atlantic and Pacific oceans over the next 3 years. ATom will study the impact of human-produced air pollution on greenhouse gases and on chemically reactive gases in the atmosphere with a focus on ozone, methane, and black carbon, as well as atmospheric particulate matter.
Analysis of nearly three decades of air samples from Alaska’s North Slope shows little change in long-term methane emissions despite significant Arctic warming over that time period, according to new research published in Geophysical Research Letters.
Every year MLO contributes to the local Science Fair event. This year Samantha Yamamoto & Maile Birlhante won the junior research award with their project 'Light Dispersing'. Kendra Puleo won the second award with 'Ocean acidification effect on the food chain.' Kylan K. Sakata won the senior division award with 'Verifying special relativity over time dilation through moon decay at variable altitudes' and Moana Lily Pinner won the second award with 'Investigating the SPF, anti-oxidant and anti cancer potential of turmeric and ginger.'
Human activity has increased the direct warming effect of carbon dioxide (CO2) in the atmosphere by 50 percent above pre-industrial levels during the past 25 years, according to NOAA's 10th Annual Greenhouse Gas Index .
In the Northern Hemisphere, the spring equinox promises warmer days and green plants. But for researchers at NOAA's South Pole Atmospheric Baseline Observatory, Sunday March 20 marks the start of the austral autumn, the last time they see the sun for six months.
The annual growth rate of atmospheric carbon dioxide measured at NOAA’s Mauna Loa Observatory in Hawaii jumped by 3.05 parts per million during 2015, the largest year-to-year increase in 56 years of research.
Carbon tetrachloride (CCl4) was once commonly used as a cleaning agent and remains an important compound in the chemical industry. As a result, production across the globe has been banned for uses that result in CCl4 escaping to the atmosphere. A new study, led by CIRES scientist Lei Hu and NOAA scientist Stephen Montzka of NOAA ESRL's Global Monitoring Division, reports that release rates are still 30 to 100 times higher than amounts reported to emission inventories.
NOAA/ESRL's Global Monitoring Division has introduced a 'Trends in Atmospheric Methane' web page. Similar to the existing 'Trends in Carbon Dioxide' web page, it displays graphs and data for the most recent globally averaged CH4 data.
Ann Thorne of the Global Monitoring Division received the NOAA Research Employee of the Year Award "For exceptional service to NOAA's Global Monitoring Division and Earth System Research Laboratory, and an unsurpassed spirit and dedication to the NOAA Boulder Student Program."
NOAA’s measurements of ozone at South Pole registered a record low for the month of October. This year, the average amount of ozone measured by a Dobson instrument at South Pole in the second half of October was 114 Dobson Units (DU), or 60 percent below the pre-ozone hole conditions.