What causes the irregular cycle of the atmospheric tape recorder signal in HCN?

Impact of the vertical velocity scheme on modeling transport in the tropical tropopause layer

(2010) F. Ploeger et al.   JOURNAL OF GEOPHYSICAL RESEARCH

Asian Monsoon Transport of Pollution to the Stratosphere

(2010) W. J. Randel et al.   SCIENCE

Annual cycle of horizontal in-mixing into the lower tropical stratosphere

(2009) Paul Konopka et al.   JOURNAL OF GEOPHYSICAL RESEARCH

The diabatic heat budget of the upper troposphere and lower/mid stratosphere in ECMWF reanalyses

(2009) S. Fueglistaler et al.   QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY

Tropical tape recorder observed in HCN

(2008) H. C. Pumphrey et al.   GEOPHYSICAL RESEARCH LETTERS

Global wildland fire emissions from 1960 to 2000

(2008) Martin G. Schultz et al.   GLOBAL BIOGEOCHEMICAL CYCLES

QBO and annual cycle variations in tropical lower stratosphere trace gases from HALOE and Aura MLS observations

(2008) M. R. Schoeberl et al.   JOURNAL OF GEOPHYSICAL RESEARCH