Nighttime chemistry at a high altitude site above Hong Kong

Brown, Steven S.; Dubé, William P.; Tham, Yee Jun; Zha, Qiaozhi; Xue, Likun; Poon, Steven; Wang, Zhe; Blake, Donald R.; Tsui, Wilson; Parrish, David D.; Wang, Tao

doi:10.1002/2015jd024566

Advanced Search

Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.

Search our Collections & Repository

Advanced Search
Custom Query

All these words:

For very narrow results

This exact word or phrase:

When looking for a specific result

Any of these words:

Best used for discovery & interchangable words

None of these words:

Recommended to be used in conjunction with other fields

Language:

Dates

Publication Date Range:

to

Document Data

Title:

Document Type:

Library

Collection:

Series:

People

Author:

Clear All

Query Builder

Query box

Clear All

For additional assistance using the Custom Query please check out our Help Page

The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Nighttime chemistry at a high altitude site above Hong Kong

2016
By Brown, Steven S. ; Dubé, William P. ; Tham, Yee Jun ; ...
Source: Journal of Geophysical Research-Atmospheres, 121(5), 2457-2475.

[PDF-7.20 MB]

Select the Download button to view the document

This document is over 5mb in size and cannot be previewed

Details Related Documents You May Also Like

Details:

Journal Title:

Journal of Geophysical Research: Atmospheres
Personal Author:

Brown, Steven S. ; Dubé, William P. ; Tham, Yee Jun ; Zha, Qiaozhi ; Xue, Likun ; ... More +

Brown, Steven S. ; Dubé, William P. ; Tham, Yee Jun ; Zha, Qiaozhi ; Xue, Likun ; Poon, Steven ; Wang, Zhe ; Blake, Donald R. ; Tsui, Wilson ; Parrish, David D. ; Wang, Tao Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory)

OAR (Oceanic and Atmospheric Research) ; ESRL (Earth System Research Laboratory) ; CIRES (Cooperative Institute for Research in Environmental Sciences) ; CSL (Chemical Sciences Laboratory) Less -
Description:

Nighttime reactions of nitrogen oxides influence ozone, volatile organic compounds, and aerosol and are thus important to the understanding of regional air quality. Despite large emissions and rapid recent growth of nitrogen oxide concentrations, there are few studies of nighttime chemistry in China. Here we present measurements of nighttime nitrogen oxides, NO3 and N2O5, from a coastal mountaintop site in Hong Kong adjacent to the megacities of the Pearl River Delta region. This is the first study of nighttime chemistry from a site within the residual layer in China. Key findings include the following. First, highly concentrated urban NOx outflow from the Pearl River Delta region was sampled infrequently at night, with N2O5 mixing ratios up to 8ppbv (1min average) or 12ppbv (1s average) in nighttime aged air masses. Second, the average N2O5 uptake coefficient was determined from a best fit to the available steady state lifetime data as (N2O5)=0.0140.007. Although this determination is uncertain due to the difficulty of separating N2O5 losses from those of NO3, this value is in the range of previous residual layer determinations of N2O5 uptake coefficients in polluted air in North America. Third, there was a significant contribution of biogenic hydrocarbons to NO3 loss inferred from canister samples taken during daytime. Finally, daytime N2O5 mixing ratios were in accord with their predicted photochemical steady state. Heterogeneous uptake of N2O5 in fog is determined to be an important production mechanism for soluble nitrate, even during daytime.
Source:

Journal of Geophysical Research-Atmospheres, 121(5), 2457-2475.
DOI:

https://doi.org/10.1002/2015jd024566
Document Type:

Journal Article
Rights Information:

Other
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:770c1d13f06dd93906965a4cf154682775aad55b3cd5612b1d01b3683750f576
Download URL:

https://repository.library.noaa.gov/view/noaa/21490/noaa_21490_DS1.pdf
File Type:

No Additional Files

More +

Nighttime chemistry at a high altitude site above Hong Kong

Details:

Supporting Files

Related Documents

You May Also Like