Feature image: A satellite looks down at the surface of Earth. Image from Unsplash
Paper: Satellite and Ocean Data Reveal Marked Increase in Earth’s Heating Rate
Authors: N. G. Loeb, G. C. Johnson, T. J. Thorsen, J. M. Lyman, F. G. Rose, and S. Kato
At the most fundamental level, what causes climate change? Simply put, climate change is a symptom of an energy imbalance with more energy coming into Earth’s atmosphere than is able to go out. This imbalance drives changes in our climate system that scientists around the world study, including warming temperatures, rising sea levels, melting glaciers, and coral reef bleaching. Using two different kinds of observational data, a recent study has found evidence that the energy imbalance is increasing, which suggests climate change will only worsen.
Continue reading “Throwing Earth Off Balance: Evidence Grows that Our Planet is Heating Up Faster than in the Past”
Featured Image from Bethany Laird on Unsplash
Paper: Where are the Most Extraordinary Lightning Megaflashes in the Americas?
Author: Michael Peterson
Most lightning flashes only last 0.2 seconds, meaning if you blink at the wrong moment, you could miss it. However, scientists have developed new lightning-detection instruments, known as Geostationary Lightning Mappers (GLMs), that never miss a flash. The GLMs are aboard the two Geostationary Operational Environmental Satellites (GOES-West and GOES-East), which are in stationary orbits over the Earth’s western hemisphere. With the data from the GLMs, atmospheric scientists have discovered new lightning phenomena called “megaflashes” which can light up the sky for as long as 16 seconds.
Continue reading “Satellite Technology Helps Discover New Weather Phenomena: Lightning Megaflashes”
Featured image: by Gerd Altmann from Pixabay.
Paper: Satellite Hydrology Observations as Operational Indicators of Forecasted Fire Danger Across the Contiguous United States
Authors: Alireza Farahmand, E. Natasha Stavros, John T. Reager, Ali Behrangi, James T. Randerson, and Brad Quayle.
Forest Fires are a natural part of the ecosystem that clear out old and overgrown vegetation and recycle nutrients back into the soil. However, increasing growth into these forested areas has increased the wildland fire hazards to people and their homes and businesses. This has subsequently increased the use of resources and funds to battle and restore damage from these fires. In the United States alone, federal wildfire suppression expenditures tripled from $0.4 billion per year to $1.4 billion per year in the last century. These economic impacts inspired researchers from the California Institute of Technology, University of Arizona, University of California – Irvine and the United States Department of Agriculture to see if they could improve wildfire prediction beyond our current limited methods using subjective expert knowledge and weather forecasts.
Continue reading “Satellites Predict Forest Fires Better Than Experts”