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Posted inCalifornia

NASA Earth Observatory: Extratropical Cyclones Drench West Coast

One of the most intense extratropical cyclones ever to strike the Pacific Northwest drew an equally historic amount of moisture onto the West Coast of North America on October 24-25, 2021. The storm off the coast of Washington—with a central pressure of 942.5 millibars, equivalent to a category 4 hurricane—was the second extreme low-pressure storm […]

Posted inCalifornia

Mapping Methane Emissions in California

In October 2016, an aircraft equipped with NASA’s Airborne Visible Infrared Imaging Spectrometer–Next-Generation (AVIRIS-NG) instrument detected multiple plumes of methane arising from the Sunshine Canyon landfill near Santa Clarita, California. The plumes were large enough that researchers from the Jet Propulsion Laboratory (JPL) notified facility operators and local enforcement agencies about it. It was an […]

Posted inSci/Tech

NASA: New online visualization tool will enable anyone to see what sea levels will look like anywhere in the world in the decades to come

NASA’s Sea Level Change Team has created a sea level projection tool that makes extensive data on future sea level rise from the Intergovernmental Panel on Climate Change (IPCC) easily accessible to the public – and to everyone with a stake in planning for the changes to come. Pull up the tool’s layers of maps, […]

Posted inRegional

A Long View of Sierra Snow

In Spanish, Sierra Nevada means “snowy mountain range.” While the term “snowy” has generally been true for most of U.S. history, those mountains have seen less snow accumulation in recent years. This decline plays a role in water management and response to drought in California and other western states. Each spring and summer, meltwater runoff from Sierra […]

Posted inCalifornia

California Reservoirs Reflect Deepening Drought

Just four years after emerging from a severe multi-year drought, California has descended into dry conditions not seen since 1976-77. Evidence of the new drought stands out in satellite images of the state’s two largest reservoirs. The images above and below, acquired by the Operational Land Imager (OLI) on Landsat 8, show Shasta Lake and Lake Oroville this year and […]

Posted inEnviro

NASA: Gold mining pits in the Peruvian Amazon line the rivers and cut into the rainforest

February 16, 2021 – An astronaut aboard the International Space Station (ISS) took this photograph of numerous gold prospecting pits in eastern Peru. The pits—usually hidden from an astronaut’s view by cloud cover or outside the Sun’s glint point—stand out brilliantly in this image due to the reflected sunlight. The multiple meandering channels of the Inambari […]

Posted inEnviro

A Meeting of Smoke and Storms

In September 2020, historic wildfires on the U.S. West Coast lofted plumes of smoke high into the atmosphere. Pushed by prevailing winds that sweep air from west to east, satellites tracked the smoke as it spread widely across much of the continental United States. A second hazard—tropical cyclones—also helped steer the high-flying smoke plumes as they streamed […]

Posted inRegional

Trailing the Pacific Crest from Space

Aug. 7, 2019 – There is no award for completing the walk from Mexico to Canada through California, Oregon, and Washington. But read about the journeys of so-called “thru-hikers” of the Pacific Crest Trail (PCT), and it is clear that the 2,650-mile (4,265-kilometer) hike changes you. Even walking a small segment of trail can connect […]

Posted inSci/Tech

Historic Heat in Alaska

An upper-level ridge of high pressure that slid over Alaska in June 2019 unleashed a heat wave of astonishing intensity. With temperatures soaring into the 80s and even 90s (Fahrenheit) in some parts of Alaska, several all-time and daily temperature records fell. Anchorage, Kenai, and King Salmon broke all-time records on July 4, 2019. In […]

Posted inEnviro

Alaska Hit With a Hot March

April 10, 2019 – Forget the transition period between seasons: in March 2019, Alaska jumped from mid-winter right into late spring, setting monthly temperature records in many cities and towns. Meteorologists have noted that the unusually hot month was part of a long-term warming trend in the state in recent years. The map above shows […]