Yamada, K., T. Hayasaka, and H. Iwabuchi, 2014: Variation in radiative contribution by clouds to downward longwave flux. J. Meteor. Soc. Japan, 92A, 125-140.
- The cloud radiative forcing (CRF) increases with increasing of cloud fraction and decreasing of precipitable water and cloud base height (Fig. 1). This study evaluated CRF using with 1-dimentional radiative transfer model (mstrnX) and in-situ observation data at eight sites, which belong to the Baseline Surface Radiation Network (BSRN).
- At Antarctic station, cloud shows negative effect, which appears frequently with a strong temperature inversion layer. Under the presence of temperature inversion, the dry region in which precipitable water is smaller than 10 mm shows smaller cloud effect than no temperature inversion (Fig. 2).
- At Japanese station located on the Pacific Ocean side, cloud effect shows increasing with increasing of cloud base height of low cloud. This correlation is caused of the difference of cloud base height during the summer and winter season.