Monthly forecasts of tropical Pacific SST and wind anomalies.
| Name | Title | Fields of interest | |
|---|---|---|---|
| Naftali Cohen | Postdoctoral Research Scientist | ||
| Allison Wing | Postdoctoral Research Fellow | ||
| Ji Nie | Postdoctoral Research Scientist | ||
| Catherine Pomposi | Graduate Research Fellow | Regional Climate Variability, Predictability, and Change; West African Monsoon Dynamics; Climate Services and Food Security; Science Education and Outreach | |
 |
Daehyun Kim | Lamont Assistant Research Professor | |
 |
Michela Biasutti | Lamont Associate Research Professor | Tropical Climate: dynamics of ITCZs and monsoons. Past and future anthropogenic climate change, especially over Africa. Adaptation to climate change in developing countries. |
A storm that dumped as much as 20 inches of rain over three days flooded thousands of homes in Louisiana in mid-August. Lamont's Adam Sobel writes about the discussion around the role of climate change and attribution studies.
Powerful tropical cyclones like the super typhoon that lashed Taiwan with 150-mile-per-hour winds last week and then flooded parts of China are expected to become even stronger as the planet warms. That trend hasn’t become evident yet, but it will, scientists say.
Over the past half-million years, the equatorial Pacific Ocean has seen five spikes in the amount of iron-laden dust blown in from the continents. In theory, those bursts should have turbo-charged the growth of the ocean’s carbon-capturing algae – algae need iron to grow – but a new study led by Lamont Gisela Winckler shows that the excess iron had little to no effect. The results are important today, because as groups search for ways to combat climate change, some are exploring fertilizing the oceans with iron as a solution.
If you asked scientists a few years ago if a specific hurricane has been caused by climate change, most would have told you that, while it raises the risks, no single weather event could yet be attributed to climate change. That’s starting to change. In a new report, a committee of the National Academy of Sciences, including Lamont Professor Adam Sobel, assesses the young field of attribution studies for several types of extreme events. It recommends future research and guidance to help the field advance and contribute to understanding of the risks ahead.
If the Montreal Protocol had been rejected and the risks of ozone depleting substances had been ignored by the world, we would be facing even more intense tropical cyclones in the near future, according to a new study.
Most rainfall occurs in the tropics, where it is concentrated in a band circling the Earth near the equator (see Fig. 1). Understanding how this rain band and its local constituents, i.e. the monsoon systems over land and the intertropical convergence zone over the ocean, will respond to climate change is one of the most stubborn questions in climate science (Bony et al., 2015; Voigt and Shaw, 2015). It is also one that has important implications for climate adaption. For example, because the rain band is so localized, small changes in its position can lead to large local rainfall changes.
The Amazon Rainforest sprawls across more than 2 million square miles of South America, taking in carbon dioxide and releasing oxygen as “the lungs of the planet.” When they’re healthy, the world’s tropical forests and vegetation absorb up to 30 percent of the CO2 produced by human activities, but during droughts, that capacity falls off. To understand what that will mean as global warming produces more intense and frequent droughts, we need to understand the water and carbon cycles of the Amazon and how those cycles interact.
As it moves across the Indian Ocean, the Madden-Julian Oscillation (MJO) can bring torrential rains to California and add power to hurricanes forming in the Gulf of Mexico. Yet after 30 years of studying this cyclical weather pattern scientists are no closer to understanding how it works.
Two scientists at Lamont-Doherty Earth Observatory have been recognized for early-career achievement in the atmospheric sciences by the American Geophysical Union (AGU), the world’s largest earth-sciences organization.
