K H Rosenlof

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In situ measurements of the relative humidity with respect to ice (RHi) and of nitric acid (HNO3) were made in both natural and contrail cirrus clouds in the upper troposphere. At temperatures lower than 202 kelvin, RHi values show a sharp increase to average values of over 130% in both cloud types. These enhanced RHi values are attributed to the presence(More)
  • E S Cam, R S Harwood, P W Mote, G E Peckha, R A Suttie, W A Lahoz +77 others
  • 1997
Tropical stratospheric water vapor measured by the microwave limb sounder (M 1.S), " Geophys. Comparison of C1O measurements made by airborne and spaceborne microwave radiometers in the arctic winter stratosphere 1993, " Geophys. Correlated ollservations of HC1 and C1ONO2 from UARS and implications for stratospheric chlorine partitioning, " Geophys. Res.(More)
We have developed a chemical ionization mass spectrometry technique for precise in situ measurements of hydrochloric acid (HCl) from a high-altitude aircraft. In measurements at subtropical latitudes, minimum HCl values found in the upper troposphere (UT) were often near or below the detection limit of the measurements (0.005 parts per billion by volume),(More)
Airborne in situ measurements over the eastern Pacific Ocean in January 2004 have revealed a new category of nitric acid (HNO 3)-containing particles in the tropical lower stratosphere. These particles are most likely composed of nitric acid trihydrate (NAT). They were intermittently observed in a narrow layer above the tropopause (18±0.1 km) and over a(More)
  • F Tummon, B Hassler, N R P Harris, J Staehelin, W Steinbrecht, J Anderson +15 others
  • 2015
In the framework of the SI2N (SPARC (Stratosphere-troposphere Processes And their Role in Climate)/IO 3 C (International Ozone Commission)/IGACO-O3 (Integrated Global Atmospheric Chemistry Observations – Ozone)/NDACC (Network for the Detection of Atmospheric Composition Change)) initiative, several long-term vertically resolved merged ozone data sets(More)
Airborne in situ measurements over the eastern Pacific Ocean in January 2004 have revealed a new category of nitric acid (HNO 3)-containing particles in the tropical lower stratosphere. These particles are most likely composed of nitric acid trihydrate (NAT). They were intermittently observed in a narrow layer above the tropopause (18±0.1 km) 5 and over a(More)
  • J Meyer, C Rolf, C Schiller, S Rohs, N Spelten, A Afchine +3 others
  • 2015
This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract The Fast In-situ Stratospheric Hygrometer (FISH) is an airborne Lyman-α photofrag-ment fluorescence hygrometer for accurate and precise measurement of total water mixing ratios(More)
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Key Points: • The ATAL is of anthropogenic origin but not solely due to(More)
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