Recently, studies have been actively conducted on light sources which can affect the growth rate of plants by using monochromatic lights which have light wavelength or combining them into mixed lights. The studies measure Photosynthetic Photon Flux Density (PPFD) according to the change of light quality of LED light source and research on the acceleration of plant growth. With red, blue, green and white mono-chromatic lights, this study fabricated 6 mixed lights. Then, with 3 mono-chromatic lights and 6 fabricated mixed light source, the study conducted comparison analysis on what effect optical properties and PPFD have on (the growth of) a plant (radish sprouts). As the result of analysis, in the same PPFD, it turned out that the speed of plant growth was faster in red mono-chromatic lights while the speed was similar in blue and white mono-chromatic lights and mixed lights.

Based on the monthly weather report of Korea Meteorological Administration (KMA) and daily sea surface temperature (SST) data from National Fisheries Research and Development Institute (NFRDI) (1995-2004), mean heat fluxes were estimated at the port of Yeosu. Net heat flux was transported from the air to the sea surface during February to September, and it amounts to 205 Wm-2 in daily average value in May. During October to January, the transfer of net heat flux was conversed from the sea surface to the air with -70 Wm-2 in minimum of daily average value in December. Short wave radiation was ranged from 167 Wm-2 in December to 300 Wm-2 in April. Long wave radiation (Sensible heat) was ranged from 27 (-14) Wm-2 in July to 90 (79) Wm-2 in December. Latent heat showed 42 Wm-2 with its minimum in July and 104 Wm-2 with its maximum in October in daily average value.