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Climate change alters glacial lake outburst floods

Trends of ice-dammed GLOF discharges between 1900 and 2021. Posterior trends from Bayesian quantile regression of reported V0 (orange) and Qp (blue) with time. Dark and light colors are trends for the median and 90th percentile (that is, 10% largest), respectively, for 1900–2021; gray densities are trends for 1990–2021. Black lines are 95% HDIs and circles are medians of the posterior distributions. Trends refer to log10-transformed values of V0 and Qp,…

Photos document Lake Oroville’s rise after storms hit California

Houseboats on Lake Oroville during a drought in Oroville, California, U.S., on Monday, Oct. 11, 2021.David Paul Morris | Bloomberg | Getty ImagesLake Oroville, California's second-largest reservoir, has experienced a dramatic rise in water levels after a series of atmospheric river storms in January triggered widespread flooding while boosting the Sierra Nevada snowpack and the state's drought-stricken reservoirs.The lake, which has several reservoirs and canals that supply water to 27 million residents, has reached 68%…

Hands-On Introduction to Delta Lake with (py)Spark | by João Pedro | Feb, 2023

Concepts, theory, and functionalities of this modern data storage frameworkPhoto by Nick Fewings on UnsplashI think it’s now perfectly clear to everybody the value data can have. To use a hyped example, models like ChatGPT could only be built on a huge mountain of data, produced and collected over years.I would like to emphasize the word “can” because there is a phrase in the world of programming that still holds, and probably ever will: garbage in, garbage out. Data by itself has no value, it needs to be organized,…

Delta Lake: Keeping It Fast and Clean | by Vitor Teixeira | Feb, 2023

Ever wondered how to improve your Delta tables’ performance? Hands-on on how to keep Delta tables fast and clean.Simplified flow chart on how to keep Delta tables fast and clean (Image by Author)Keeping Delta tables fast and clean is important for maintaining the efficiency of data pipelines. Delta tables can grow very large over time, leading to slow query performance and increased storage costs. However, there are several operations and trade-offs that can positively influence the speed of the tables.In this blog post,…

How does a drying Great Salt Lake affect carbon cycling?

Credit: Pixabay/CC0 Public Domain As water levels at the lake continue to decline, the complex natural systems the lake supports are shifting, too. Ecohydrologist Erin Rivers from the Quinney College of Natural Resources is investigating how shifting water levels at the Great Salt Lake are altering the way it captures and stores carbon. The lakebed sprawls…

Restoring an ancient lake from the rubble of an unfinished airport in Mexico City

Weeks after President Andrés Manuel López Obrador took office in 2018, the combative leftist leader enraged international investors and Mexico’s business community by canceling the airport, which was already around one-third complete. During his campaign, López Obrador had railed against the project’s management for overspending and corruption. Then, in a post-election referendum launched by López Obrador’s party, the public had voted to scrap it (though critics claimed the results were unrepresentative, with just one in…

Utah has 45 days to save the Great Salt Lake. Will it act?

We often describe the stillness and quiet of the desert as timeless. But deserts are dynamic and desert lakes fragile, none more so than Utah’s Great Salt Lake.Emblematic of the West’s Great Basin, the Great Salt Lake has no outlet. The lake can only hold its own against evaporation if sufficient water arrives from three river systems fed by mountain snowmelt. When inflow decreases, the lake recedes. Each year since 2020, the Great Salt Lake received less than a third of its average (since 1850) stream flow. The lake…

Salt Lake City wants to replace cars with this 8-mile gondola ride

The Utah Department of Transportation (UDOT) has a plan to replace a narrow, winding highway leading to a popular ski area with an 8-mile-long (13 km) electric gondola ride. The move would make the site accessible via public transportation, removing the need to clog the highway with cars, cut down on traffic accidents, and decrease emissions in the canyon. The planned route for the gondola passes through Little Cottonwood Canyon, where State Route 210 connects Salt Lake City with four major ski…