Page 33 - Mapping the Nation: Taking Climate Action

"The sea is a planet that has not yet been fully explored," said Dr. Parry Oei, a hydrography advisor for MPA. "It's quite mind- boggling how everything is linked to everything else." Oei is one of the prime movers behind the creation of GeoSpace-Sea. For scientists, GeoSpace-Sea is a way to understand how the world's oceans are changing and how these changes are impacting Singapore. For planners, GeoSpace- Sea is a way to anticipate these changes and make predictive analyses about how they will affect Singapore, using a shared repository of information. For port officials, the higher-resolution data from the project will underpin operations, allowing them to see and consider the consequences of decisions, such as the impact of dredging on sea life. Everything Is Connected Oei traces GeoSpace-Sea's provenance to the late 1980s when he was working in Hobart, Australia, as part of the Asia- Australia Project, a collaborative effort to understand the emerging signs of climate change. It was during this time in Australia that Oei began to think about mapping the complexity of the ocean. Climate change would surely impact the oceans, and the oceans would in turn affect climate change. The question was how to gather data—and what then to do with it. At that time, GIS was a niche technology used primarily by trained GIS experts. Because this group did not generally include hydrographers, Oei found little enthusiasm for this use of GIS within Singapore's government. "Hydrographers are always the supporting actors," he explained. "At the end of the movie when the credits roll, we're the crew list. Sometimes it goes so fast you don't even see your name." The Project Takes Shape In the ensuing years, GIS became a cloud-based technology, intuitive enough for cross-discipline collaborations and robust enough to include all kinds of spatial data at all scales and without limits on data volumes. By the mid-2000s, as climate change became more of a pressing concern, and sea level rise posed an existential threat to Singapore, Oei's idea gained momentum. "For the longest time, we had been trying to make the case for using GIS for marine protection and to study the dynamic nature of the seabed, but the question was how to do it," Oei said. "Climate change gave us the profile and attention we needed." Sea level rise is not the only climate change variable Singapore will experience. Intense storms will increase, causing storm surges and inland flooding. As a marine geospatial knowledge repository, GeoSpace-Sea could increase the understanding of extreme weather events. For instance, until recently it was assumed that water flow in the Singapore Strait was chiefly affected by the Northwest Monsoon, the period in winter and early spring when the Indian Ocean's trapped heat lures cold air from the Himalayas. Scientists now believe the Southwest Monsoon—the summer season when winds blow moist air from the ocean toward the Himalayas—wields a stronger influence. "The question will be how do we get rid of water when it floods and how do we prevent seawater from coming in," Oei said. "I have no easy answers, but I do believe we need to monitor everything in the environment—weather patterns, temperature, sea level rise—because it's all part of climate change." The Future of GeoSpace-Sea As GeoSpace-Sea continues to expand, Oei hopes to add more weather data to further this holistic approach. The MPA also plans to make some of GeoSpace-Sea's layers available to the public once sufficient cybersecurity protocols are established. For now, GeoSpace-Sea is primarily useful as an unfolding historical document that lets researchers study past trends to predict future developments. Some datasets stretch back 20 years, and new data is added as it becomes available. 32 to Climate Action A Geographic Approach