Welcome to the Institute of Environmental Science & Meteorology
Established in 2003, The Institute of Environmental Science & Meteorology, or IESM, is an academic unit of the College of Science in the University of the Philippines, Diliman.
IESM is committed to providing top-tier education in environmental and atmospheric sciences, equipping graduate students with the knowledge and skills needed to address environmental challenges in the Philippines and beyond.
IESM is a hub for innovative research in environmental science and meteorology, leading studies that advance our understanding of climate, weather systems, and sustainable development, both regionally and globally.
IESM plays a vital role in supporting national and regional efforts to mitigate environmental risks, offering expert guidance, and collaborating with government agencies and the public to enhance public safety and environmental stewardship.
News and Announcements
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IESM Faculty Member Appointed Director General of the Philippine Space Agency
His Excellency President Ferdinand R. Marcos Jr. has appointed Gay Jane P. Perez, Ph.D. as the Director General of the Philippine Space Agency (PhilSA). Dr. Perez previously served as Officer-in-Charge of PhilSA beginning September 2025. Prior to this, she held the position of Deputy Director General for Space Science and Technology (DDGSST) from 2021, bringing
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Thesis Proposal of Patrick Michael Millagrosa
The Thesis Proposal schedule of Mr. Patrick Michael M. Millagrosa will be on Tuesday, 03 February 2026, at 1:00 PM at the IESM auditorium, IESM building. His paper is titled “Assessment of Ecological Quality Indicators in the Ligawasan Marsh Complex, Mindanao, Philippines through the Remote Sensing Ecological Index (RSEI) Framework“. Thesis Proposal Committee:
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Thesis Proposal of Ree Andrea Alejado
The Thesis Proposal schedule of Ms. Ree Andrea Alejado will be on Wednesday, 04 January 2026, at 10:00 AM via Zoom. Her paper is entitled “Investigating the Extent of Saltwater Intrusion in the Coastal Aquifers of Sanga-Sanga Island, Tawi-Tawi“. Thesis Proposal Committee:
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Anthropogenic Impacts Affecting Marine Mammals Strandings in the Philippines
Summarizing over 20 years of research, this framework illustrates the interconnectedness of anthropogenic stressors influencing marine mammals (MarMams) and the cascading pathways through which these pressures affect their survival, health, and ecological function. These drivers do not operate in isolation, they interact with each other and form feedback loops that amplify overall ecological risk. Collectively,
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Meteorological Masterclass: Northeast Monsoon Extreme Rainfall in the Philippines
Join us for the Meteorological Masterclass (DJF Season) on “Northeast Monsoon Extreme Rainfall in the Philippines” on January 14, 2026, from 2:00 to 4:00 PM (PST) via Zoom and FB Live. The masterclass will be led by Lyndon Mark P. Olaguera, Ph.D., Climate Scientist from Manila Observatory. Joining him as panelists are Marco Polo A.
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Perspective Paper Examines Ecological Risks and Policy Gaps in SFLMA Implementation
A new perspective article by Enrico L. Replan of the Institute of Environmental Science and Meteorology, UP Diliman, analyzes the ecological vulnerabilities that may arise from implementing the Sustainable Forest Land Management Agreement (SFLMA). Published in Transactions NAST PHL, the paper reviews how recent policy reforms could unintentionally accelerate the conversion of remaining natural forests