Articles by Joseph Romm

Global warming will spawn severe storms and tornados, reports NASA

We have known for a while that global warming is making our weather more extreme, especially extreme heat, drought, heavy rainfall, and flooding. Now we have more predictions:

NASA scientists have developed a new climate model that indicates that the most violent severe storms and tornadoes may become more common as Earth's climate warms.

Perhaps that is why we have been setting records for tornados lately. This is especially bad news for this country because, as the study notes: "The central/east U.S. experiences the most severe thunderstorms and tornadoes on Earth."

Solar thermal power deserves more attention, due to its lower cost and relative ease of storage

Solar thermal power is back! Solar thermal gets less attention than its sexier cousin -- high-tech photovoltaics -- but has two big advantages. First, it is much cheaper than PV. Second, it captures energy in a form that is much easier to store -- heat -- typically with mirrored surfaces that concentrate sunlight onto a receiver that heats a liquid (which is then used to make steam to drive a turbine).

Back in the 1980s, Luz International was the sole commercial developer of U.S. solar thermal electric projects. The company built nine solar plants, totaling 355 MW of capacity, in California's Mojave desert. Luz filed for bankruptcy in 1991 for a variety of reasons detailed in this Sandia report.

When it comes to climate change, prevention is more important than adaptation

G. Gordon Liddy's daughter repeated a standard Denier line in our debate: Humans are very adaptable -- we've adapted to climate changes in the past and will do so in the future.

I think Hurricane Katrina gives the lie to that myth. No, I'm not saying humans are not adaptable. Nor am I saying global warming caused Hurricane Katrina, although warming probably did make it more intense. But on the two-year anniversary of Katrina, I'm saying Katrina showed the limitations of adaptation as a response to climate change, for several reasons.

El Niño was not the cause of 2006 warming patterns in the U.S.

A new study by NOAA's Earth System Research Lab finds:

Greenhouse gases likely accounted for more than half of the widespread warmth across the continental United States last year ... [T]he probability of U.S. temperatures breaking a record in 2006 had increased 15-fold compared to pre-industrial times because of greenhouse gas increases in Earth's atmosphere.

How did they come to this conclusion?

[T]he NOAA team analyzed 42 simulations of Earth's climate from 18 climate models provided for the latest assessment by the Intergovernmental Panel on Climate Change ... The results of the analysis showed that greenhouse gases produced warmth over the entire United States in the model projections, much like the warming pattern that was observed last year across the country.