Alaska’s annual average temperature has increased 3.4ºF over the past 50 years. The observed increase shown above compares the average temperature of 1993-2007 with a 1960s-1970s baseline, an increase of over 2ºF. The brackets on the thermometers represent the likely range of model projections, though lower or higher outcomes are possible. By the end of this century, …
Aug 13, 2015 · In the past few decades, average temperatures in Alaska have risen twice as fast as in other parts of the nation. Consequently, Alaska is feeling the effects of climate change sooner, and stronger, than the rest of the United States. Rising temperatures are causing glaciers to recede and sea ice to thin and disappear.
Aug 28, 2015 · Throughout Alaska, the average temperature in 2014 was 35.6°F (2.5°C), a substantial 3.0°F (1.67°C) increase over the 30-year average of 32.6°F (0.33°C). Rapid temperature increase is projected to continue , with future warming likely to …
By the end of the century, projected increases in temperature range from 2.9 to 12.9 degrees under the lower emissions pathway and from 9.8 to 21.6 degrees under the higher pathway. Figure 1: Observed and projected changes (compared to the 1925–1960 average) in near surface air temperature for Alaska.
The climate patterns of Alaska are primarily influenced by latitude, continentality, and elevation. The high latitude drives the seasonal pattern of available solar radiation. The Arctic has limited incoming solar warmth in the winter and an abundance of available light in the summer.Jan 2, 2020
Global warming is the unusually rapid increase in Earth's average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels.Jun 3, 2010
Warmer temperatures can also lead to a chain reaction of other changes around the world. That's because increasing air temperature also affects the oceans, weather patterns, snow and ice, and plants and animals. The warmer it gets, the more severe the impacts on people and the environment will be.May 9, 2017
Climate Change in Alaska These changes have resulted in a reduction of subsistence harvests, an increase in flooding and erosion, concerns about water and food safety and major impacts to infrastructure: including damage to buildings, roads and airports.
CO2 from fossil fuels as when the amount of carbon dioxide increases in atmosphere it increases the temperature.Mar 19, 2017
The average temperature in the contiguous United States reached 54.51 degrees Fahrenheit (12.51 degrees Celsius) in 2021. This was approximately 2.49 degrees Fahrenheit higher than the 20th century average.
Temperature: when the temperature of place increases the air gets heated expands and rises. This leads to a decrease in air pressure in the area. when the temperature falls the air gets cold contracts and contracts and descends downwards. This leads to an increase in air pressure.
Two degrees of warming would bring around 29 additional days of extreme heat, with warm spells enduring for 35 extra days. At 1.5 degrees, 14% of the global population would be exposed to at least one severe heat wave every five years. That rate jumps to 37% if the planet reaches 2 degrees of warming.Jul 30, 2021
Scientists have predicted that long-term effects of climate change will include a decrease in sea ice and an increase in permafrost thawing, an increase in heat waves and heavy precipitation, and decreased water resources in semi-arid regions.
The southern and coastal regions of Alaska can also be cloudy with some rain showers throughout the year with average summer temperatures ranging from 40°F to 60°F (4° – 15°C). Winter temperatures in Alaska range from 0°F / -18°C to -30°F / -35°C from November to March.
In Alaska, the normal temperature has risen nearly 1 degree Fahrenheit since the last report was issued with data up to 2010, according to the National Weather Service. Temperatures in the Lower 48 rose by about 0.5 degrees Fahrenheit since the last report.May 6, 2021
Other Key Things to Know about Visiting Alaska in Summer Temperature: Daytime highs range 60°F - 80°F. Nighttime lows are refreshingly cool, dipping into the 40's - 50's. In May and September, expect temperatures to be 5°- 10° cooler.
Alaska has warmed more than 3°F (1.7°C) over the past 60 years—a rate more than twice that of other US states—and the average winter temperature in Alaska has increased by 6°F (3.3°C), a temperature change nearly half of the temperature change that ended the last ice age.
Persistent heat and drought conditions in Alaska fueled an extreme wildfire season in 2015. A swath of land the size of Massachusetts, comprising more than 5.1 million acres, burned across the state, making it the second-worst wildfire season on record.
Climate change is reducing both the extent and thickness of Arctic sea ice, exposing previously ice-covered water to heat from the sun. Ocean temperatures in all the Arctic’s marginal seas bordering the continents are increasing.
Four main factors influence the state’s climate: its northerly latitude crossing the Arctic circle, its wide range of elevation from sea level to the highest peak in the United States, proximity (or lack thereof) to the ocean, and seasonal distribution ...
Average annual temperature has increased since 1925, but with large multi-decadal variations; most of the increase has occurred in the winter and spring seasons. Under a higher emissions pathway, historically unprecedented warming is projected by the end of the 21st century.
Arctic sea ice plays a vital role in the climate of Alaska, the lives of its inhabitants, and the functionality of its ecosystems. Warming linked to ice loss influences atmospheric circulation and precipitation patterns, both within and beyond the Arctic.
Climate models project that Arctic waters will be virtually ice-free by late summer before 2050.
Alaska’s temperature climate is highly variable. It was moderately warm from the 1920s into the 1940s , followed by a much cooler period from the late 1940s into the 1970s. Since the 1970s, Alaska has warmed by about 2.5°F (Figure 1), compared to about 1.5°F for the contiguous United States as a whole.
Average annual temperatures in Alaska are projected to rise by an additional 2°F to 4°F by 2050. If global emissions continue to increase during this century, temperatures can be expected to rise 10°F to 12°F in the north, 8°F to 10°F in the interior, and 6°F to 8°F in the rest of the state.
Over the past 60 years, Alaska has warmed more than twice as rapidly as the rest of the United States, with state-wide average annual air temperature increasing by 3°F and average winter temperature by 6°F, with substantial year-to-year and regional variability.#N#1#N#Most of the warming occurred around 1976 during a shift in a long-lived climate pattern (the Pacific Decadal Oscillation [PDO]) from a cooler pattern to a warmer one. The PDO has been shown to alternate over time between warm and cool phases. The underlying long-term warming trend has moderated the effects of the more recent shift of the PDO to its cooler phase in the early 2000s.#N#2#N#,#N#3#N#The overall warming has involved more extremely hot days and fewer extremely cold days (Ch. 2: Our Changing Climate, Key Message 7 ).#N#1#N#,#N#4
With the exception of oil-producing regions in the north, rural Alaska is one of the most extensive areas of poverty in the U.S. in terms of household income, yet residents pay the highest prices for food and fuel.#N#156#N#Alaska Native Peoples, who are the most numerous residents of this region, depend economically, nutritionally, and culturally on hunting and fishing for their livelihoods.#N#147#N#,#N#148#N#,#N#149#N#Hunters speak of thinning sea and river ice that makes harvest of wild foods more dangerous,#N#157#N#,#N#158#N#,#N#159#N#,#N#160#N#changes to permafrost that alter spring run-off patterns, a northward shift in seal and fish species, and rising sea levels with more extreme tidal fluctuations (see Ch. 12: Indigenous Peoples ).#N#161#N#,#N#162#N#,#N#163#N#,#N#164#N#Responses to these changes are often constrained by regulations.#N#93#N#,#N#164#N#Coastal erosion is destroying infrastructure. Impacts of climate change on river ice dynamics and spring flooding are threats to river communities but are complex, and trends have not yet been well documented.#N#152
Muir Glacier in Alaska. August 13, 1941 August 31, 2004. On the left is a photograph of Muir Glacier in Alaska taken on August 13, 1941; on the right, a photograph taken from the same vantage point on August 31, 2004. Total glacial mass has declined sharply around the globe, adding to sea level rise.
Permafrost temperatures in Alaska are rising, a tha wing trend that is expected to continue, causing multiple vulnerabilities through drier landscapes, more wildfire, altered wildlife habitat, increased cost of maintaining infrastructure, and the release of heat-trapping gases that increase climate warming.
Alaska differs from most of the rest of the U.S. in having permafrost – frozen ground that restricts water drainage and therefore strongly influences landscape water balance and the design and maintenance of infrastructure. Permafrost near the Alaskan Arctic coast has warmed 4°F to 5°F at 65 foot depth#N#80#N#,#N#98#N#since the late 1970s and 6°F to 8°F at 3.3 foot depth since the mid-1980s.#N#99#N#In Alaska, 80% of land is underlain by permafrost, and of this, more than 70% is vulnerable to subsidence upon thawing because of ice content that is either variable, moderate, or high.#N#100#N#Thaw is already occurring in interior and southern Alaska and in northern Canada, where permafrost temperatures are near the thaw point.#N#81#N#,#N#82#N#Models project that permafrost in Alaska will continue to thaw,#N#83#N#,#N#85#N#,#N#86#N#and some models project that near-surface permafrost will be lost entirely from large parts of Alaska by the end of the century.#N#84
Alaska is the United States’ only Arctic region. Its marine, tundra, boreal (northern) forest, and rainforest ecosystems differ from most of those in other states and are relatively intact. Alaska is home to millions of migratory birds, hundreds of thousands of caribou, some of the world’s largest salmon runs, a significant proportion of the nation’s marine mammals, and half of the nation’s fish catch.#N#123
Summer daytime temperatures range from 55° - 70° F , but you'll feel warmer due to long hours of direct sunlight. Still, know what to wear in Alaska and dress in layers. Also know that the weather gets rainier as summer progresses. Read about the best time to visit Alaska based on all these factors.
Quick: What are the four seasons in Alaska? Answer: Winter, June, July, and August. That timeworn classic is only partially true--May and September can also be great summer months. Alaska weather and daylight varies wildly by region and season, from short-sleeves in summer to down jackets in winter; from 7 rainy days in May in Southcentral ...
The study found that warming adversely affected crop yields even for those varieties best suited to the heat. The study examined rice yields and atmospheric conditions from 1966 to 2016 in Central Luzon, the major rice-growing region of the Philippines.
A study of the relationship between temperature and yields of various rice varieties, based on 50 years of weather and rice-yield data from farms in the Philippines, suggests that warming temperatures negatively affect rice yields.
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