Search Results

You are looking at 1 - 10 of 23 items for :

  • Atmosphere-land interactions x
  • Years of the Maritime Continent x
  • User-accessible content x
Clear All
Chu-Chun Chen, Min-Hui Lo, Eun-Soon Im, Jin-Yi Yu, Yu-Chiao Liang, Wei-Ting Chen, Iping Tang, Chia-Wei Lan, Ren-Jie Wu, and Rong-You Chien

, the reduced roughness alone may also increase surface pressure and subsidence through land–atmosphere interactions. Although the enhanced wind speed might mitigate this effect, the net effect is a decrease in evapotranspiration ( Maloney 1998 ). These two nonradiative processes contribute to changes in the water and energy budgets, resulting in a positive temperature response. Conversely, radiative processes reduce the net incoming radiation (through the increase in surface albedo) to produce a

Open access
Wan-Ling Tseng, Huang-Hsiung Hsu, Noel Keenlyside, Chiung-Wen June Chang, Ben-Jei Tsuang, Chia-Ying Tu, and Li-Chiang Jiang

; Miura et al. 2007 ; Wu and Hsu 2009 ; Birch et al. 2016 ) and atmosphere–ocean coupling ( Zhu et al. 2010 ). The present study uses the newly developed ECHAM5-SIT model (described in section 2 ), one of the few GCMs that realistically simulate the MJO ( Tseng et al. 2015 ; Jiang et al. 2015 ), to address this unresolved concern. Three experiments are conducted to delineate the relative effects of land–sea contrast and orography in the MC on the MJO and address the following questions: 1) How

Full access
Claire L. Vincent and Todd P. Lane

difficulty in modeling the interscale interactions between intraseasonal variability and diurnally forced mesoscale variability such as the sea-breeze circulation and mountain/valley winds. The diurnal cycle exerts a dominating influence on the MC. The diurnal precipitation cycle in the tropics is controlled by the response to radiative heating and the periodic organization of convection both onshore and offshore by mesoscale phenomena such as the sea-breeze circulation, land/valley breezes, and diurnal

Full access
D. Argüeso, R. Romero, and V. Homar

heat and moisture, but also to a distinct interaction between microphysics and the deep convection scheme. Tests using a different microphysics scheme (Thompson) did not prove superior in terms of precipitation and showed a similar cloud structure (not shown). 4. Summary and discussion In this study, we quantified the effects of resolution and convective representation in simulating rainfall features and the vertical structure of the atmosphere in the Maritime Continent. In general, increasing

Open access
Hironari Kanamori, Tomo’omi Kumagai, Hatsuki Fujinami, Tetsuya Hiyama, and Tetsuzo Yasunari

). Convective cloud systems over the MC release considerable latent heat that constitutes a major component of the atmospheric heat budget. In addition, thermal land–sea contrasts associated with the major islands in this warm ocean environment generate complex local circulations that play important roles in both the energy cycle and the hydrologic cycle of the MC ( Neale and Slingo 2003 ). Temporal variations in convection and precipitation exhibit pronounced diurnal and intraseasonal variabilities, and

Full access
Chidong Zhang and Jian Ling

study. To fill the gaps, we propose that the following research topics be pursued to advance our understanding of the barrier effect of the MC: Interactions of convective systems over the sea and land of the MC under different large-scale condition: It is unknown how much of the MJO-C convection development over the sea is related to offshore propagation of convection initiated over land ( Houze et al. 1981 ; Mori et al. 2004 ; Keenan and Carbone 2008 ) and how much is initiated over the water

Full access
Wei-Ting Chen, Shih-Pei Hsu, Yuan-Huai Tsai, and Chung-Hsiung Sui

envelope of MJO events as “building blocks” ( Nakazawa 1988 ; Majda et al. 2004 ; Mapes et al. 2006 ; Gottschalck et al. 2013 ) or become active as an independent mode ( Dunkerton and Crum 1995 ; Wheeler and Kiladis 1999 ). Significant ocean–atmosphere interactions can occur during the passage of the KWs ( Baranowski et al. 2016a ). The KWs can significantly modulate the tropical convection on synoptic scales (e.g., Takayabu 1991 ; Wheeler and Kiladis 1999 ; Wheeler et al. 2000 ; Wang and Fu

Full access
Satoru Yokoi, Shuichi Mori, Masaki Katsumata, Biao Geng, Kazuaki Yasunaga, Fadli Syamsudin, Nurhayati, and Kunio Yoneyama

convection during nighttime. Warner et al. (2003) and Mapes et al. (2003b) proposed that an ascent motion in the lower troposphere, which was due to gravity waves emanating from the nighttime radiative cooling of the elevated terrain of the Andes, destabilized the offshore atmosphere west of the Pacific coast of Panama and Columbia. Love et al. (2011) and Hassim et al. (2016) suggested the role of gravity waves emanating from convective systems over land. While diabatic heating within convective

Full access
Claire L. Vincent and Todd P. Lane

Continent and scale interaction with the diurnal cycle of precipitation . Quart. J. Roy. Meteor. Soc. , 140 , 814 – 825 , https://doi.org/10.1002/qj.2161 . 10.1002/qj.2161 Rauniyar , S. P. , and K. J. E. Walsh , 2013 : Scale interaction of the diurnal cycle of rainfall over the MC and Australia: Influence of the MJO . J. Climate , 26 , 1304 – 1321 , https://doi.org/10.1175/JCLI-D-12-00124.1 . 10.1175/JCLI-D-12-00124.1 Rotunno , R. , 1983 : On the linear theory of the land and sea breeze

Full access
Yan Zhu, Tim Li, Ming Zhao, and Tomoe Nasuno

forced diurnal variation (e.g., over land and ocean in the MC), HFW, and MJO. The discovery of two-way interaction between MJO and HFW may shed some light on improving the MJO simulations over the Maritime Continent in climate models. It has been shown that multiscale variabilities, ranging from diurnal cycle and high-frequency tropical waves to MJO and interannual time scales, are very active over the Maritime Continent. Scale interactions among these motions may have a profound impact on MJO

Full access