Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–9 of 9 results
Advanced filters: Author: Roy L. Mauldin Clear advanced filters

  • External cycling regenerates nitrogen oxides from the NOx oxidative reservoir, NOz. Aircraft observations reveal NOx external cycling compensates for NOx aging, sustaining NOx distribution and production of OH radicals far from NOx emission sources

    • Chunxiang Ye
    • Xianliang Zhou
    • Shaojie Song
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-10

  • Chlorine radicals function as a strong atmospheric oxidant, particularly in polar regions, where levels of hydroxyl radicals are low. Measurements in the Arctic reveal high levels of molecular chlorine during the day, consistent with a photochemical source.

    • Jin Liao
    • L. Gregory Huey
    • John B. Nowak
    Research
    Nature Geoscience
    Volume: 7, P: 91-94

  • Iodic acid (HIO3) forms aerosols very efficiently, but its gas-phase formation mechanism is not well understood. Atmospheric simulation chamber experiments, quantum chemical calculations and kinetic modelling have now revealed that HIO3 forms as an early iodine oxidation product from hypoiodite. The mechanism explains field measurements and suggests a catalytic role for iodine in particle formation.

    • Henning Finkenzeller
    • Siddharth Iyer
    • Rainer Volkamer
    ResearchOpen Access
    Nature Chemistry
    Volume: 15, P: 129-135

  • By performing experiments under upper tropospheric conditions, nitric acid, sulfuric acid and ammonia can form particles synergistically, at rates orders of magnitude faster than any two of the three components.

    • Mingyi Wang
    • Mao Xiao
    • Neil M. Donahue
    ResearchOpen Access
    Nature
    Volume: 605, P: 483-489

  • Measurements in the CLOUD chamber at CERN show that the rapid condensation of ammonia and nitric acid vapours could be important for the formation and survival of new particles in wintertime urban conditions, contributing to urban smog.

    • Mingyi Wang
    • Weimeng Kong
    • Neil M. Donahue
    ResearchOpen Access
    Nature
    Volume: 581, P: 184-189

  • Atmospheric observations from a boreal forest region, laboratory experiments and theoretical considerations are combined, and another compound is identified that has a significant capacity to oxidize sulphur dioxide and potentially other trace gases.

    • R. L. Mauldin III
    • T. Berndt
    • M. Kulmala
    Research
    Nature
    Volume: 488, P: 193-196

  • Aircraft measurements, laboratory photolysis experiments and modelling calculations reveal a mechanism for the recycling of nitric acid into nitrogen oxides; this enables observations to be reconciled with model studies, and suggests that particulate nitrate photolysis could be a substantial tropospheric nitrogen oxide source.

    • Chunxiang Ye
    • Xianliang Zhou
    • Christoph Knote
    Research
    Nature
    Volume: 532, P: 489-491