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Full-Text Articles in Other Life Sciences

Controls And Adaptive Management Of Nitrification In Agricultural Soils, Jeanette M. Norton, Yang Ouyang Aug 2019

Controls And Adaptive Management Of Nitrification In Agricultural Soils, Jeanette M. Norton, Yang Ouyang

Plants, Soils, and Climate Faculty Publications

Agriculture is responsible for over half of the input of reactive nitrogen (N) to terrestrial systems; however improving N availability remains the primary management technique to increase crop yields in most regions. In the majority of agricultural soils, ammonium is rapidly converted to nitrate by nitrification, which increases the mobility of N through the soil matrix, strongly influencing N retention in the system. Decreasing nitrification through management is desirable to decrease N losses and increase N fertilizer use efficiency. We review the controlling factors on the rate and extent of nitrification in agricultural soils from temperate regions including substrate supply, …


Intensification Of The Decadal Activity In Equatorial Rossby Waves And Linkage To Changing Tropical Circulation, Wan-Ling Tseng, Shih-Yu (Simon) Wang, Huang-Hsiung Hsu, Jonathan D.D. Meyer Jan 2019

Intensification Of The Decadal Activity In Equatorial Rossby Waves And Linkage To Changing Tropical Circulation, Wan-Ling Tseng, Shih-Yu (Simon) Wang, Huang-Hsiung Hsu, Jonathan D.D. Meyer

Plants, Soils, and Climate Faculty Publications

Equatorial Rossby waves (ERWs) are manifest as westward-propagating, planetary-scale waves that feature a symmetric pair of pressure and zonal wind fields about the equator. ERWs can modulate tropical convective activity, especially in South Asia and the Maritime Continents, and represent an important mode of intraseasonal variability additional to the Madden-Julian Oscillation. Changes in the frequency and intensity of ERWs during the recent decades were investigated based on observations of tropospheric winds and tropical convection. Spectral analyses indicated that ERWs appear to have intensified especially in the upper troposphere; this is associated with increased convective activity located off the equator. The …


Role Of Indochina Peninsula Topography In Precipitation Seasonality Over East Asia, Chi-Hua Wu, Wan-Ru Huang, S.-Y. (Simon) Wang Jul 2018

Role Of Indochina Peninsula Topography In Precipitation Seasonality Over East Asia, Chi-Hua Wu, Wan-Ru Huang, S.-Y. (Simon) Wang

Plants, Soils, and Climate Faculty Publications

Stage-wise precipitation evolution over East Asia, primarily from spring to summer, is influenced by nearby monsoons and can be topographically driven. Corresponding to the onset of the Asian summer monsoon circulation, the Meiyu-Baiu occurs rapidly in May, replacing the East Asian spring rains. The Meiyu-Baiu rapidly terminates in late July due to the synchronous development of the subtropical monsoons extending from Africa to the East Asia–Western North Pacific (WNP). In late summer–autumn, the monsoonal circulation gradually retreats, in contrast to the rapid and stepwise transitions of the monsoon. This study reviews the role of the Indochina Peninsula in modulating the …