TY - JOUR T1 - Seasonal variation of nitrogen oxides in the central North Atlantic lower free troposphere JO - Journal of Geophysical Research: Atmospheres UR - https://doi.org/10.1029/2007jd009688 PY - 2008/09/06 AU - Val Martin M AU - Honrath RE AU - Owen RC AU - Li QB ED - DO - DOI: 10.1029/2007jd009688 PB - American Geophysical Union (AGU) VL - 113 IS - D17 Y2 - 2025/12/02 ER -