The Marine Environment and Climate Change

This publication by the Regional Organization for the Protection of the Marine Environment (ROPME) addresses the critical issue of marine environment and climate change, emphasizing that the marine environment is fundamental to life on Earth. Covering approximately 71% of the planet’s surface, it provides food, energy, freshwater (through desalination), supports biodiversity, regulates the global climate, and underpins economic development. The report defines the marine environment as an integrated system that includes oceans, seas, gulfs, and estuaries, along with their physical, chemical, and biological components. It also distinguishes between weather (short-term atmospheric conditions) and climate (long-term patterns). The document explains key concepts such as the greenhouse effect, global warming, and climate change. The greenhouse effect results from the accumulation of greenhouse gases (e.g., CO₂, methane), leading to rising temperatures. Global warming is the direct outcome, while climate change refers to long-term alterations in temperature, precipitation, and wind patterns. Human activities—especially fossil fuel combustion and deforestation—are identified as the primary drivers, contributing to approximately 87% of the causes. The report outlines the main characteristics of climate change, including rising global temperatures, melting ice caps, altered precipitation patterns, and ocean acidification. It further details the major impacts, such as extreme heatwaves and climate variability, droughts and floods, water scarcity, spread of diseases, forest fires, agricultural decline and food insecurity, desertification and biodiversity loss, and environmental displacement. Special emphasis is placed on impacts on the marine environment, including sea level rise due to ice melt and thermal expansion, ocean acidification affecting marine life, degradation of ecosystems such as coral reefs and mangroves, changes in ocean currents, and increased intensity of storms and extreme events. The report highlights the consequences of sea level rise, such as coastal flooding, erosion, infrastructure damage, saltwater intrusion, and economic losses, with projections of a 50–100 cm rise by the end of the century if emissions are not reduced. In the ROPME region, Gulf countries face significant risks, including coastal inundation, desertification, and water scarcity. Low-lying countries such as Bahrain and Qatar are particularly vulnerable. The publication stresses the importance of climate adaptation, including transition to renewable energy, improved water management, climate-resilient infrastructure, early warning systems, and enhanced environmental awareness. It also presents engineering solutions like seawalls, barriers, and coastal protection systems, as well as strategic retreat from vulnerable coastal zones. The report reviews key international agreements, including the UN Framework Convention on Climate Change (UNFCCC), Kyoto Protocol, and Paris Agreement. These frameworks aim to reduce emissions and strengthen global climate action. Finally, it highlights ROPME’s role in monitoring, awareness, regional cooperation, and implementation of environmental agreements. The report concludes with key recommendations, focusing on reducing greenhouse gas emissions, protecting biodiversity, promoting clean energy, integrated coastal zone management, strengthening research and international collaboration. Overall, the report underscores the urgency of addressing climate change to safeguard marine ecosystems and ensure sustainable development for present and future generations.