About 28 representatives from several key institutions, such as BMKG, Syiah Kuala University and some local private universities, took part in a training on hydrometeorological hazard entitled “Hydrometeorology and Climate Change Capacity Building Workshop” at TDMRC on Wednesday, June 27th, 2018.
Two mentors, Dr. Saumi Syahreza and Mr. Yopi Ilhamsyah, took charge of the training. Mr. Ilhamsyah shared with the participants about meteorological hazards and climate change. Among the important points from his session is how El Nino, the climatic phenomenon where seawater is warmer than usual, can affect Indonesia both positively and negatively. For example, besides potentially causing drought and forest fire, El Nino may increase production in fishery and salt industries. Several types of agriculture commodities, such as corn and onion, may also benefit from the prolonged dry season.
Dr. Syahreza talked about measuring precipitation on Earth from the space or known as remote sensing. Gauging precipitation is important as rainfall is a determining factor of the climate and plays a significant role in water resource and hazard management. There are two methods of remote sensing for precipitation. The first method is passive sensing, which uses the infrared transmitted by clouds or microwave dispersed by rain particles. The other method is active sensing. This method uses radar to transmit microwave radiation, and then precipitation is estimated using the scattered back microwave.
Dr. Syahreza explained further that the remote sensing of precipitation is an important instrument for integrated observing of rainfall products. While weather radar and rain gauges are the main sources of rainfall information, these two instruments are usually limited to placement only in populated areas and can be enlarged in limited range over the oceans. Therefore, satellites provide important information in filling this vast data gap, especially in the uninhabited areas and over the ocean. By integrating all available satellite information, along with field measurements in “appropriate” ways, it will be possible to collect climate phenomena / climatologic rainfall globally.