Tag Archive for: Climate Change

Hot Again: 2020 Sets Yet Another Global Temperature Record

/in , , /by /AP Newsby Seth Borenstein

Earth’s rising fever hit or neared record hot temperature levels in 2020, global weather groups reported Thursday.

While NASA and a couple of other measurement groups said 2020 passed or essentially tied 2016 as the hottest year on record, more agencies, including the National Oceanic Atmospheric Administration, said last year came in a close second or third. The differences in rankings mostly turned on how scientists accounted for data gaps in the Arctic, which is warming faster than the rest of the globe.

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Kauai Island Utility Cooperative, AES Pursue Nation’s First Solar-Powered Pumped Hydro Project

/in , , /by /Utility Diveby Robert Walton

Kauai Island Utility Cooperative and AES Corp. have executed and filed a power purchase agreement with Hawaii regulators to develop a solar-powered pumped hydro storage project the utility says will bring its total resource mix above 80% renewables. The West Kauai Energy Project could come online in 2024.

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2020 Ties 2016 as Hottest Year on Record, Even Without Warming Boost from El Niño

/in , , /by /Los Angeles Timesby Tony Barboza

Global warming pushed temperatures into record territory in 2020, in effect tying 2016 as the hottest year on record, according to data released Thursday by U.S. science agencies.

Last year’s average global surface temperature was 2.2 degrees Fahrenheit above the late 19th century average, according to NASA. It was the fifth consecutive year of more than 2 degrees above that base line. Indeed, the seven hottest years in 140 years of record keeping are the last seven. In descending record order, they are 2020 and 2016, 2019, 2017, 2015, 2018 and 2014.

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A “Forever” Drought Takes Shape in the West

/in , , /by /Axiosby Jennifer A. Kingson

The Southwest U.S. is mired in an ever-worsening drought, one that has left deer starving in Hawaii, turned parts of the Rio Grande into a wading pool, and set a record in Colorado for the most days of “exceptional drought.”

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Sustainable Gardeners, Get Into Your Climate Zone

/in , , /by /Water News Network

People around the world know San Diego for its beautiful, sunny, and mild weather. San Diego residents know our daily weather has more variety than visitors might imagine.

Climate is defined as the average weather conditions in an area over a long period, generally 30 years or more. German climate scientist Wladimir Koppen first divided the world’s climate into six regions in the early 1900s.

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Climate Crisis: Record Ocean Heat in 2020 Supercharged Extreme Weather

/in , , /by /The Guardianby Damian Carrington

The world’s oceans reached their hottest level in recorded history in 2020, supercharging the extreme weather impacts of the climate emergency, scientists have reported.

More than 90% of the heat trapped by carbon emissions is absorbed by the oceans, making their warmth an undeniable signal of the accelerating crisis. The researchers found the five hottest years in the oceans had occurred since 2015, and that the rate of heating since 1986 was eight times higher than that from 1960-85.

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California’s ‘New Climate’

/in , /by /San Francisco Chronicleby Mallory Moench

In 2020, Californians endured the hottest August, September and October since 1895. Climate scientists warn the trends are evidence of a warming planet. Rising temperatures combined with less rain and high winds have worsened the chance of extreme fire weather.

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Fruit trees, especially citrus, thrive in San Diego County’s climates with just a little bit of care. The Pineapple Guava (Acca sellowiana) is a good choice with spectacular blooms. Photo: WIkimedia/Creative Commons License Edible Plants climate zone

Sustainable Gardeners, Get Into Your Climate Zone

/in , /by

People around the world know San Diego for its beautiful, sunny, and mild weather. San Diego residents know our daily weather has more variety than visitors might imagine.

Climate is defined as the average weather conditions in an area over a long period, generally 30 years or more. German climate scientist Wladimir Koppen first divided the world’s climate into six regions in the early 1900s.

Since then, U.S. climate zones have been defined in more detail. The U.S. Department of Agriculture defines climate zones according to the lowest average temperature in the region. You may also be familiar with the 24 climate zones identified in Sunset Magazine’s iconic Sunset Western Garden Book. The book is now out of print, but is available online as an interactive edition. Existing print copies from the last edition printed in 2012 are prized heirlooms.

Devoted gardeners still follow the 24 climate zones featured in the guide. This is based on the California Irrigation Management Information System (CIMIS) adoption of a similar map identifying 24 climate zones.

San Diego County's geography falls within six of the 24 CIMIS climate zones. Photo: CIMIS match your climate zone

San Diego County’s geography falls within six of the 24 CIMIS climate zones. Photo: CIMIS

Evaporation + Transpiration = Evapotranspiration

Depending on the amount of rainfall, temperature, humidity, wind, shade, and the nature of the soil, water in the ground evaporates at different rates. When evaporation is higher, the soil becomes dry more quickly.

Evapotranspiration (ET) is the process by which water is transferred from the land to the atmosphere by evaporation from the soil and other surfaces, and by transpiration from plants.

Reference Evapotranspiration (ETo) is a baseline formula. All your plant water needs are measured against this baseline in a complex series of measurements and calculations.

Why is understanding evapotranspiration important?

In metropolitan San Diego County, our annual ETo rate increases as you move inland, meaning the soil becomes dry more quickly.

Fortunately, we don’t need to worry about making these calculations on our own. CIMIS maintains a statewide system of weather stations and reference plots. From these, it has identified the six main ET Zones in San Diego County.

Understanding your ETo zone and gardening climate zone are important first steps toward deciding how much water your landscaping will need. Working against the ETo and gardening climate zones can greatly increase your need for irrigation.

Learn more about your ETo climate zone’s specifics and gardening microclimate on the California Irrigation Management Information System website.

 

This article is part of a year-long series inspired by the 71-page Sustainable Landscapes Program guidebook available at SustainableLandscapesSD.org. The Water Authority and its partners also offer other great resources for landscaping upgrades, including free WaterSmart classes at WaterSmartSD.org.

Drought-Stricken Colorado River Basin Could See Additional 20% Drop in Water Flow by 2050

/in , , /by /Yale Climate Connectionsby Jan Ellen Spiegel

Colorado is no stranger to drought. The current one is closing in on 20 years, and a rainy or snowy season here and there won’t change the trajectory. This is what climate change has brought. “Aridification” is what Bradley Udall formally calls the situation in the western U.S. But perhaps more accurately, he calls it hot drought – heat-induced lack of water due to climate change. That was the core of research released in 2017 by Udall, a senior climate and water scientist at Colorado State University’s Colorado Water Center, and Jonathan Overpeck at the University of Michigan.

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Climate Change Causing One-Third of Flood Damage in United States, Stanford Study Finds

/in , , /by /San Francisco Chronicleby Kurtis Alexander

Increasingly strong storms are responsible for more than a third of the nation’s flood costs, swelling the tab by billions of dollars a year as climate change continues to fuel more extreme weather, according to new research at Stanford University.

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