Abstract The historical behavior of the southwest monsoon (SWM) rainfall in the Philippines is described using observed rainfall during the months of June to September from 1961 to 2010. Data are obtained from meteorological stations situated in the western half of the country...
Abstract Satellite-based rainfall is an alternative source of information especially for developing countries such as the Philippines where there are many areas that do not have ground observation stations. To maximize the use and potential of the derived precipitation products, it is important...
In this paper, we use geometric algebra to describe the polarization ellipse and Stokes parameters. We show that a solution to Maxwell’s equation is a product of a complex basis vector in Jackson and a linear combination of plane wave functions. We convert...
A massive landslide devastated the community of Barangay Guinsaugon, Municipality of St. Bernard, Southern Leyte Province, Philippines, at about 10:30 local time on 17 February. The landslide occurred along the steep fault scarp of the Philippine Fault Zone (PFZ) (Figure 1a), a large...
This study assessed noise levels in Ateneo de Manila University caused by motor vehicles and tested the performance of two standard noise models using observations at four monitoring stations inside the campus. Monitoring was conducted at three periods of the day, with each...
A combined observational and theoretical study of diurnal variations of NO2 concentrations of the air at the Manila Observatory (Quezon City, Philippines) in June and August 2002 was made. The concentrations were monitored using a Differential Optical Absorption Spectroscope (DOAS). The analysis showed...
Previous simulations of regional scale weather and climate required the power of mainframe supercomputers to handle the formidable nonlinear fluid dynamical equations that describe the atmosphere. Using a reasonably powerful Linux-based Beowulf cluster (christened the Agila), we report a successful application of the...
The potential for the use of water vapor as an air quality indicator was investigated. Water vapor samples were collected from three urban sites (roadside, landfill, residential) and an agricultural area, using a simple active cooling system. They were analyzed for standard water...
A prototype DOAS instrument was assembled to measure ambient concentration of Sulfur Dioxide (SO2). A folded-path configuration employing retroreflectors was chosen because of advantages in sensitivity and convenience in housing the transmitter and receiver together. The measurement path length was approximately 280m. Data...
The dependence of pollution patterns in the coastal waters of Lingayen Gulf on the prevailing winds is studied with the aid of a theoretical model. The model equations consist of the well-known vertically integrated hydro-dynamical equations and a mass transport-dispersion equation. The model...
Flooding due to sea level rise is a primary concern brought about by climate change. This study focuses on Northern Navotas, Metro Manila, a densely populated urban area affected by frequent diurnal changes in sea level. The study verifies terrain data vis-a-vis its...
