English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The MANTRA (Middle Atmosphere Nitrogen TRend Assessment) 2004 campaign tookplace in Vanscoy, Saskatchewan, Canada (52° N, 107° W) from 3August to 15 September, 2004. In support of the main balloon launch, a suiteof five zenith-sky and direct-Sun-viewing UV-visible ground-basedspectrometers was deployed, primarily measuring ozone and NO2 totalcolumns. Three Fourier transform spectrometers (FTSs) that were part of theballoon payload also performed ground-based measurements of several species,including ozone. Ground-based measurements of ozone and NO2 differentialslant column densities from the zenith-viewing UV-visible instruments arepresented herein. They are found to partially agree within NDACC (Network forthe Detection of Atmospheric Composition Change) standards for instrumentscertified for process studies and satellite validation. Vertical columndensities of ozone from the zenith-sky UV-visible instruments, the FTSs, aBrewer spectrophotometer, and ozonesondes are compared, and found to agreewithin the combined error estimates of the instruments (15%). NO2vertical column densities from two of the UV-visible instruments arecompared, and are also found to agree within combined error (15%)

Intercomparison of ground-based ozone and NO&lt;sub&gt;2&lt;/sub&gt; measurements during the MANTRA 2004 campaign

Intercomparison of ground-based ozone and NO<sub>2</sub> measurements during the MANTRA 2004 campaign