Crocuses in snow

In case you didn’t notice, New Jersey’s weather in the last couple of months has been upside-down. Most of February was weirdly springlike – in fact, the warmest February on record in the state – while March has behaved more like a typical February.

Get used to it. Greater variability in weather may be the most immediate impact of climate change on New Jersey, according to New Jersey state climatologist David Robinson.

Robinson, the keynote speaker at the 21st annual New Jersey Land Conservation Rally March 17, said there have been “a lot more extremes” in weather during the last few decades as a result of human impacts on the climate.

“A preponderance of evidence suggests that climate change is occurring and humans are responsible for significant portions of recent changes,” he said.

At a time when climate change is being questioned by our national political leadership, how is Robinson so sure that human action is the cause? He firmly believes that scientific theory, observations and models together add up to solid evidence.

A geology professor at Rutgers University, Robinson relies on observations in his work. His specialty is tracking global snow cover, a key indicator of the warming of Earth’s atmosphere.

He said the polar ice sheet is shrinking at rates he never thought he would see in his lifetime.

“In the spring, each successive decade the snow is melting earlier,” he said.

At the same time, he noted, carbon dioxide in the atmosphere has risen precipitously in the last 50 years. Carbon dioxide is mainly created by the burning of fossil fuels like oil and gas.

Carbon dioxide and other greenhouse gases in the atmosphere act like a thermal blanket, trapping heat.

“Physics tells us that this greenhouse gas science works,” Robinson said.

Scientific theory and more than a century of weather observations are used to create computer models to predict future trends like rising temperatures, more precipitation, increased weather variability and higher sea levels.

In addition to weather variability, said Robinson, climate change in New Jersey may mean hotter, drier summers; warmer, wetter winters; and more floods from too much rain falling at once. Another major impact is rising sea levels that could inundate the state’s coastal barrier islands in the next 100 years.

What can be done about climate change?

In a sense, said Robinson, there is no stopping it.

“The train has left the station – we’re not going back.”

It would take centuries to fully reverse the impacts, he said.

But that doesn’t mean people should give up hope.

“We can slow the train,” he assured land conservation rally attendees.

Four steps, he said, are needed to fight climate change:

• Knowledge – Developing a better understanding of the details and complexities of climate change;

• Mitigation – Taking actions like reducing carbon emissions and increasing sources of clean energy;

• Adaptation – Building communities that are more resilient to weather extremes and, where needed, moving people away from flood-prone and coastal areas;

• Leadership – Raising awareness of the challenges ahead.

New Jersey’s land conservation community can play an important role, said Robinson, by preserving and restoring as much of the state’s natural environment as possible. Trees and plants remove carbon from the atmosphere and emit oxygen, while preserved lands soak up rainwater and prevent flooding.

Individuals can help by conserving energy, writing to their elected representatives, voting, and joining organizations that are taking action for the climate.

Take action for the climate and this state we’re in! Tell your representative in Congress that research and action to address climate change and advance energy conservation are important to you. Closer to home, educate yourself about the candidates in this year’s New Jersey gubernatorial and legislative elections – and vote for those who will protect the state’s environment and natural resources. Reduce your own “carbon footprint” by saving energy wherever possible.

To learn more about New Jersey’s climate, go to climate.rutgers.edu/stateclim/ and statesummaries.ncics.org/nj. For tips on energy efficiency see rethinkenergynj.org/learn-more/energy-efficiency/.

To learn more about preserving New Jersey’s land and natural resources, see the New Jersey Conservation Foundation website at njconservation.org or contact Byers at info@njconservation.org.

Stay informed! Sign up to receive breaking news delivered to your inbox.