This course explores the natural and human induced variations in the Earth’s climate. Students will investigate the Earth-Climate system, climate forcings, and climate changes of the past, present, and future. The evidence for human effects on climate will be analyzed. Climate impacts on humans and ecosystems will be evaluated. Students will engage in discussion and analysis of climate impacts, mitigation, and adaptation.
Hawaii is a dreamy blend of lush green valleys, sparkling blue oceans, and sun-kissed beaches. Each island offers its own unique charm, from tropical rainforests and majestic waterfalls to vibrant coral reefs. The air is filled with the sweet scent of plumeria and the soothing sounds of nature. But even this idyllic paradise isn’t immune to the effects of climate change, as rising temperatures and shifting weather patterns begin to impact its stunning landscapes and delicate ecosystems.
Hawaii is home to approximately 1.416 million people, with over 66,000 residents at risk of coastal flooding (Hawaii State Department of Business, Economic Development & Tourism). The reality of climate change is becoming increasingly apparent in the Aloha State. According to the State of Hawaii Climate Change Portal, sea levels around the islands have risen by about 10 inches since 1950, and they are projected to continue rising by an additional inch every four years (NOAA, 2022). While this might not seem like a dramatic change, it's crucial to remember that many homes and communities in Hawaii are situated just a few feet above sea level.
The rising sea levels have led to significant problems such as coastal erosion, which is destroying homes and displacing families who have lived in these areas for generations. Erosion, exacerbated by the encroaching ocean, is becoming an urgent issue. Many communities are grappling with the impact of this steady rise in water levels, which is undermining their homes and eroding the beautiful coastal landscapes they cherish.
But where is all this extra water coming from?
The primary contributors to rising sea levels are the melting Antarctic ice sheets and the warming of ocean waters. As global temperatures rise, ice sheets in Antarctica are melting at an accelerated rate, contributing to higher sea levels. Additionally, warmer ocean temperatures cause seawater to expand, further exacerbating the problem (IPCC, 2021).
This combination of melting ice and thermal expansion is not just a distant concern but a pressing issue for Hawaii's residents and natural environment. The impacts of these changes are being felt more acutely as communities face increasing challenges to their homes and livelihoods.
Addressing these issues requires a concerted effort to mitigate climate change and adapt to its inevitable impacts. The beauty of Hawaii is a powerful reminder of what is at stake, and it highlights the urgent need for action to preserve this paradise for future generations.
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Refleciton
Before taking this class, I always believed climate change was real but didn’t know much about the details. I often wondered about things like, “Where is all this extra water coming from?” It turns out that the rise in sea levels is mainly due to two things: the warming of the oceans, which makes the water expand, and the melting of ice caps and glaciers, which adds more water to the seas.
This course has been eye-opening. It’s helped me connect the dots between the science of climate change and its real-world impacts. I now understand the processes behind these changes and why they matter. The project, in particular, made me see how critical it is to understand both the causes and effects of climate change.
Looking ahead, I plan to use what I’ve learned to make more informed decisions and to advocate for actions that can help address climate change. Whether it’s in my personal life or future career, I feel more motivated to support sustainability efforts and educate others about the importance of tackling climate issues.