Measurements of HONO, as well as related parameters (NO x, OH, actinic flux, relative humidity, etc.), should be conducted in real-life indoor environments to clearly understand the characteristics and formation of indoor HONO. Indoor NO 2 reacts rapidly on indoor surfaces, and this reaction can be light-enhanced to produce HONO. Reported average levels of indoor HONO are generally higher than ambient conditions and can reach 40 ppbv with the presence of indoor combustion processes, which can directly emit HONO and its precursors (e.g., NO 2). Besides, HONO itself acts as an important indoor pollutant that threatens public health. Similar to ambient conditions, indoor HONO can exacerbate indoor AOC and the formation of secondary pollutants. Indoor HONO chemistry has rarely been studied in China. This is of particular interest in China considering that vast agricultural fields are regularly treated with high application rates of chemical nitrogen fertilizers, constituting an important HONO source. Furthermore, compared to budget analysis based on ambient HONO measurements, flux measurements hold the advantage of providing direct information about ground-derived HONO sources (e.g., soil emissions and heterogeneous NO 2 reactions).
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Moreover, there are still no aircraft measurements throughout the boundary layer or even reaching the free troposphere, where the formation and impact of HONO are still poorly understood, especially over polluted regions. Understanding the interaction between HONO chemistry and aerosols should be one important chapter of the “haze chemistry” referring to the complicated atmospheric chemistry in polluted regions. While it is confirmed that HONO can accelerate aerosol formation, whether aerosol plays an important role in HONO formation remains highly controversial. This is of particular interest concerning the abundance of aerosols in polluted regions such as the North China Plain (NCP). These measurements help to distinguish potential HONO sources such as ground- and aerosol-derived sources.
May it reward you richly and leave an indelible imprint on many lives.Measurements of vertical profile and flux are important to study HONO formation, but few are reported in China. "Congratulations Lance! It's a beautiful piece of work. Partly because my friend did the book, but I love to hike and I am walking a spiritual path. "I just finished reading your book for the first time and it was fantastic. Real and breathtaking, as it captures heart and soul from its viewer". A wonderful time capsule commemorative work of art, photography and awe-inspired poetry, highlighting the Pacific Northwest.
Inspiration comes from many different styles of work, each is of great interest to me.Ī preview of the book may be found here ******Ĭomments from others regarding this book Many thanks to the Flickr community for the positive comments on my photography during the last three years. I self published through Blurb and if you should get a moment, please drop in and have a look. My son Cole, has the back cover and five other photographs in the book! In this book, one will find beautiful tributes from others, some poetry, a bit of historical writing and of course lots of photographs. I have been working on a book project with the Olympic Peninsula as my subject matter (wow, imagine that!).