Sunsettommy
Diamond Member
- Mar 19, 2018
- 16,444
- 14,198
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Really? 1.1 degree Celsius in insignificant? LOL You simply cannot face the reality and want to put your head in the sand and ignore it.
The Willamette Valley has warmed by approximately 1.1°C per century, with notable increases in both air and river temperatures.
Long-Term
Research using archival data and statistical models shows that water temperatures in the lower Willamette River have increased by about 1.1°C per century since the mid-19th century, with the largest warming observed in winter months (January–February, ~1.3°C per century) and smaller increases in late spring (May–June, ~0.8°C per century) (Talke et al., 2023). Air temperatures in the Pacific Northwest, including the Willamette Valley, have similarly risen by roughly 1.1°C since 1900, consistent with regional climate model predictions (Mote et al., 2019).
copernicus.org+2
Seasonal
The warming has altered seasonal patterns in the river system. Cold-water days below 2°C have virtually disappeared, and the river no longer freezes in winter. Conversely, the number of days exceeding the ecologically important threshold of 20°C has increased by about 20 days, now averaging around 60 days per year. These changes affect aquatic ecosystems, including salmon populations, which are sensitive to elevated water temperatures (Talke et al., 2023).
copernicus.org+1
Contributing
While climate-driven air temperature increases account for the majority of warming (approximately 0.81°C since 1900), human activities such as reservoir construction, river depth changes, and managed water releases have contributed an additional ~0.34°C to river warming. Seasonal water management can temporarily reduce temperatures by up to 0.56°C in late summer (Talke et al., 2023). These anthropogenic factors have also reduced daily temperature variability and altered the river’s response to short-term weather events.
Portland State University+1
Summary
Overall, the Willamette Valley has experienced clear warming over the last century, with both air and river temperatures rising by roughly 1.1°C. This warming is most pronounced in winter months and has significant ecological implications, including longer periods of warm water and the disappearance of freezing events. Both climate change and human modifications to the river system have contributed to these trends, highlighting the combined influence of natural and anthropogenic factors on regional temperature changes (Talke et al., 2023; Mote et al., 2019).
copernicus.org+1
copernicus.org
HESS - Warming of the Willamette River, 1850–present: the effects of ...
Portland State University
"Data From: Warming of the Willamette River, 1850–Present: The Effects ...
It is clear you didn't read my two liks where it completely suports each other.
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Salem Climate Summary
Located at an elevation of 1415.2 meters (4643.04 feet) above sea level, Salem has a Mediterranean, warm summer climate (Classification: Csb).LINK
Now as it was in 1950..
https://www.bing.com/ck/a?!&&p=483f...24raW5kZXgrZm9yKzE5NTAmZm9ybT1DU0JSQU5E&ntb=1
Climate of Salem, Oregon in 1950 (Köppen Classification)
In the early 1950s, Salem, Oregon would have been classified under the Köppen climate classification as Csb — Warm-summer Mediterranean climate.
Climate is the same you liar!
2026 today has the same climate for Salem as it was in 1950.
There has been NO climate change for Salem.
That is a fact!
