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You are browsing the archive for california drought Archives - AGU Blogosphere.

22 May 2019

Domino Droughts

New research finds one drought can amplify or cause another. Decreased moisture recycling and transport impacts how droughts form and move across continents.

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28 March 2019

California ‘browning’ more in the south during droughts

Like a climate chameleon, California turned brown during the 2012–16 drought, as vegetation dried or died off. But the change wasn’t uniform. Large areas of the northern part of the state were not severely affected, while Southern California became much browner than usual… 

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19 March 2019

Western droughts caused permanent loss to major California groundwater source

According to new research, the San Joaquin Valley aquifer in the Central Valley shrank permanently by up to 3 percent due to excess pumping during the sustained dry spell.

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30 May 2018

Seismometer readings could offer debris flow early warning

Instruments designed to record earthquakes revealed information about debris-flow speed, the width of the flow and the size of boulders carried by the January 2017 mudslide in Montecito, California, and the location of the event, suggesting that the current generation of seismometers in the field could be used to provide an early warning of an incoming debris flow to residents in mudslide-prone areas.

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15 December 2017

Take Three Minutes and Study These Two Graphs

One of the biggest science meetings on the planet is underway in New Orleans right now. The AGU meeting is huge and a LOT of newsmaking science comes out of it. This year is no different. The AMS published a special edition of the Bulletin of the American Meteorological Society (BAMS) to coincide with this conference and the AMS annual meeting that I’m looking forward to attending in Austin next month. …

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17 May 2017

Researchers track groundwater loss during drought in California’s Central Valley

A new study from researchers at UCLA and the University of Houston reveals estimates of significant groundwater loss in California’s Central Valley during the recent drought and sparks questions of sustainability for the important agricultural area.

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14 October 2016

Hurricane Force Winds Coming to Oregon/Washington

The last time that the NWS office in Portland,Oregon issued a tornado warning was in November of 2014, but they issued one today as an intense low moved through the Straits of Juan de Fuca and brought gusts over hurricane force on the aptly named Hurricane Ridge at Olympic Nat. Park. Winds are gusting to 44 mph south in Astoria,Oregon and this is just the first storm. The storm tomorrow will be …

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15 September 2015

2015 Temperatures Head for the Record Book

So how does 2015 compare with the warmest year on record (last year). Hat tip to Sou at Hot Whopper for this. (FYI: AUG. was second hottest on record behind last year (.01C difference). and this info map from NWS Fresno on the biggest fire in California history: How dry is it? New paper in Nature Climate Change shows this is the lowest snow pack in the Sierra in 500 …

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31 May 2015

Will El Nino Break the California Drought? The Odds Are Not Good

I‘ve been doing a  little research into the coming El Nino and how it might relieve the epic California drought. The news isn’t very good, but the short of it is this: California needs to beseech Mother Nature for a supersized El Nino, because a regular size will probably not do the job. Look at the image above from a blog post by Tom DiLiberto last fall (on the excellent …

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2 April 2015

The California Drought from Space

The animated GIF image below shows the snow pack on the Sierra on April 3 2013, and today April 2, 2015. Keep in mind that California was in serious drought even in 2013 but it’s a whole lot worse now.

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9 December 2014

Beware the Juice of Freshly Picked California Cherries

There has been some talk about a report on the California drought that was released this week, and it’s worth talking about the reaction to it. One thing that seems to have gotten particular attention is the following statement: “The current drought is not part of a long-term change in California precipitation, which exhibits no appreciable trend since 1895. Key oceanic features that caused precipitation inhibiting atmospheric ridging off the …

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2 December 2014

Seems It Finally Rains In Southern California (and it snows too!)

Heavy rain and snow is moving into California tonight, as an intense surface/upper level low pressure system taps warm tropical air to the south and shoves it into California. California gets most of its rain in winter and you might be surprised to know that most if it comes from just 5-6 storms. The water vapor imagery from the GOES shows the storm well. Keep in mind that you are …

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30 September 2014

The Devil In The Climate Change Details

  Greenland is melting, the oceans are warming, the sea is rising (and becoming more acidic), and the Arctic sea ice is in a serious decline (that seems to be faster than predicted). These are all things that those who work in climate science understand and accept. They also accept that they are almost certainly being caused by rising greenhouse gases in our atmosphere. Yes, large portions of the public may not …

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8 August 2014

This Is Why Canada and The West Are Burning

NASA posted this map of the temperature anomalies over North America for July, and you can easily see why we there is so much wildfire activity in the U.S. West and Canada North. This is why dense smoke is travelling thousands of miles to the Eastern Seaboard. The heat out west has now pushed much of California into Exceptional Drought” status.

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9 February 2014

…and In Other Science News This Weekend

NUCLEAR WINTER What are you seeing, and what does it have to with weather? Check out this post on the CIMMS Satellite blog from the Uni. of Wisconsin. WELL MADE POINT After last week’s (and the previous week’s) viral false rumor about an impending doomsday blizzard (see this post), the NWS in New York posted this graphic on Twitter Friday. It was welcomed by every real meteorologist (in TV or …

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