Search

Begin New Search Topic Environment Political Geography Alaska

1. The Science of Rapid Climate Change in Alaska and the Arctic: Sea Ice, Land Ice, and Sea Level

Author:
John P. Holdren
Publication Date:
08-2023
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
The Earth’s surface north of the Arctic Circle, which includes nearly a third of Alaska, is warming 3-4 times faster than the global average.1 Alaska as a whole is warming twice as fast as the lower 48 states.2 As is true for most of the manifestations of anthropogenic climate change, moreover, the extremes of temperature are growing faster than the averages: the highest-ever temperature north of the Arctic Circle—100.4°F—was recorded in Verkhoyansk, Siberia, in June 2020;3 Anchorage reached an all-time high of 90°F on July 4, 2019;4 and Utqiavgik, Alaska, the northernmost U.S. city, reached an all-time winter high of 40°F in December 2022.5 The reasons warming is so fast in the Far North are quite well understood scientifically. The most important factor is the ice-snow-albedo feedback, in which warming reduces the area of land and water covered by ice and snow, which means less reflectivity and more absorption of incident solar energy at the surface, hence further warming.
Topic:
Climate Change, Environment, Carbon Emissions, and Sea Ice
Political Geography:
North America, Alaska, Arctic, and United States of America

2. Infrastructure Challenges in the Alaskan Arctic

Author:
Henry Lee
Publication Date:
08-2023
Content Type:
Policy Brief
Institution:
Belfer Center for Science and International Affairs, Harvard University
Abstract:
Infrastructure in northern Alaska requires special attention. Challenging weather conditions— including cold temperatures, remote conditions, limited transportation and logistical support, and inadequate technical capacity—result in higher costs and less reliability. These challenges are exacerbated by climate change. Permafrost thaw undermines the stability of foundations, causing building subsidence. Portions of roads are sinking, pipelines are being damaged, and utility poles are toppling over. In addition, climate change is accelerating the disappearance of sea ice, resulting in storm-caused tidal surges that erode and flood the land, causing buildings to collapse and people to lose their homes. Before discussing the current and future challenges caused by climate change, it is useful to briefly discuss the patterns of development in northern Alaska. Most of the population lives in small villages either on the coast or along small rivers. The largest “cities”—Nome, Kotzebue, and Barrow (Utqiagvik)—have populations of around 3,000 people.1 Most of the villages are not connected by roads, and there is no interconnected electricity transmission, water, or sewerage system. Transportation between villages for both goods and people is by boat or plane—the latter can be quite expensive. Hence transporting materials and equipment for infrastructure assets can add significantly to the costs of the services that they provide. The absence of regional electric grids means that each village must rely on either mini-grids or self-generation, which are neither efficient nor cheap. The primary source of energy is diesel fuel. Except for larger coastal communities, diesel oil must be flown into villages, increasing fuel costs to more than double the cost of similar fuels in the lower 48 states. Providing adequate water and sanitation services is a major challenge due to the inability to bury pipes. There is a wide range of sanitation services. Some villages have relatively modern systems, while others are dependent on primitive systems which haul away sewage in buckets. The cost of installing adequate water and sanitation services in northwest Alaska can be several times higher than installing similar systems in the southern part of the state.
Topic:
Environment, Science and Technology, Natural Resources, Infrastructure, and Public Policy
Political Geography:
North America, Alaska, and Arctic