aganesan – Anita Ganesan

Methane tops a new record in 2020 – a “grand challenge” in Earth Sciences

Posted on April 13, 2021 by aganesan

Recently released data by the National Oceanic and Atmospheric Administration show that year-on-year growth in global atmospheric methane concentrations is now the largest since intensive measurements began in 1983. Methane has been rising rapidly in the atmosphere since 2007. The Continue reading Methane tops a new record in 2020 – a “grand challenge” in Earth Sciences→

Brazil’s methane emissions inferred from satellite data

Posted on September 2, 2020 by aganesan

In our recent study published in Atmospheric Chemistry and Physics, we used data from the GOSAT satellite to quantify emissions of methane from Brazil between 2010-2018. Because of the distinct separation of sources in Brazil (i.e., wetlands are generally not Continue reading Brazil’s methane emissions inferred from satellite data→

Nitrous oxide from hotspot marine systems detected in atmospheric measurements

Posted on July 13, 2020 by aganesan

Our recent study shows how marine emissions of the potent greenhouse gas, nitrous oxide, can be detected in atmospheric concentration measurements from coastal towers. Our work, published in Geophysical Research Letters, looks at nitrous oxide emissions from the “hotspot” Eastern Continue reading Nitrous oxide from hotspot marine systems detected in atmospheric measurements→

2020 PhD positions now available

Posted on October 31, 2019 by aganesan

More information can be found here

First halocarbon emissions from India

Posted on July 20, 2019 by aganesan

Based on measurements we collected on the UK’s research aircraft in 2016, we have derived the first regional inverse modeling based estimates from India (Say et al., 2019). We show that CFCs are not in widespread use and there is Continue reading First halocarbon emissions from India→

Ozone-depleting substances from East Asia

Posted on May 30, 2019 by aganesan

We have now published a series of studies showing the release of ozone-depleting substances from East Asia. The substances we have studied are CFC-11, chloroform (CHCl3) and carbon tetrachloride (CCl4). Production of all of these. are banned under the Montreal Continue reading Ozone-depleting substances from East Asia→

New process-model of soil methanotrophy of methane

Posted on July 16, 2018 by aganesan

We have created a new process-model of methane uptake by soil, based on a compilation of field measurements showed significant differences in methanotrophy rates in different ecosystems. Our model incorporates different microbial oxidation rate constants for different ecosystems and we Continue reading New process-model of soil methanotrophy of methane→

Spatially-resolved d13C-CH4 isotopic source signatures from wetlands

Posted on April 6, 2018 by aganesan

Based on measurements compiled from the past couple of decades on the wetland d13C-CH4 isotopic source signatures from different wetland ecosystems, we have produced a spatially-resolved gridded map. This map distinguishes bogs and fens in the northern high-latitudes, which have Continue reading Spatially-resolved d13C-CH4 isotopic source signatures from wetlands→

PhD positions available for NERC GW4+ competition

Posted on October 16, 2017 by aganesan

See Vacancies for more information and get in touch if interested. Please visit the NERC GW4+ website for eligibility criteria regarding residency and other requirements.

Stable methane emissions from India

Posted on October 16, 2017 by aganesan

Our study has found that India’s methane emissions have been stable and were not rising between 2010 and 2015. This is in contrast to other countries such as China, where emissions have risen due to increased fossil fuel emissions, or Continue reading Stable methane emissions from India→