Andreas Wiegele
Karlsruhe Institute of Technology
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Publication
Featured researches published by Andreas Wiegele.
Journal of Geophysical Research | 2015
Obbe Tuinenburg; Camille Risi; Jean Lionel Lacour; Matthias Schneider; Andreas Wiegele; John R. Worden; Naoyuki Kurita; Jean-Philippe Duvel; Nicholas M Deutscher; Sandrine Bony; Pierre-François Coheur; Cathy Clerbaux
This study aims to investigate some characteristics of the moist processes of the Madden-Julian oscillation (MJO), by making use of joint HDO (or δD) and H2O vapor measurements. The MJO is the main intraseasonal mode of the tropical climate, but is hard to properly simulate in global atmospheric models. The joint use of δD-H2O diagnostics yields additional information compared to sole humidity measurements. We use mid-tropospheric Infrared Atmospheric Sounding Interferometer (IASI) satellite δD and H2O measurements to determine the mean MJO humidity and δD evolution. Moreover, by making use of high temporal resolution data, we determine the variability in this evolution during about eight MJO events from 2010 to 2012 (including those monitored during the CINDY/DYNAMO campaign). This data has a higher spatio-temporal coverage than previous δD measurements, enabling the sampling of individual MJO events. IASI measurements over the Indian Ocean confirm earlier findings that the moistening before the precipitation peak of an MJO event is due to water vapor slightly enriched in HDO. There is then a HDO depletion around the precipitation peak that also corresponds to the moister environment. Most inter-event variability determined in the current study occurs 5 to 10 days after the MJO event. In 75% of the events, humidity decreases while the atmosphere remains depleted. In a quarter of the events, humidity increases simultaneously with an increase in δD. After this, the advection of relatively dry and enriched air brings back the state to the mean. Over the maritime continent, δD-H2O cycles are more variable on timescales shorter than the MJO and the inter-event variability is larger than over the Indian Ocean. The sequence of moistening and drying processes as revealed by the q-δD cycles can be used as a benchmark to evaluate the representation of moist processes in models. This is done here by comparing observations to simulations of the isotope enabled LMDZ GCM nudged with reanalysis wind fields. These simulations also give informations to investigate possible physical origins of the observed q-δD cycles.
Atmospheric Measurement Techniques | 2012
Matthias Schneider; Sabine Barthlott; Frank Hase; Y. González; Kei Yoshimura; O. E. García; Eliezer Sepúlveda; Angel J. Gomez-Pelaez; M. Gisi; R. Kohlhepp; S. Dohe; Thomas Blumenstock; Andreas Wiegele; Emanuel Christner; Kimberly Strong; Dan Weaver; Mathias Palm; Nicholas M Deutscher; Thorsten Warneke; Justus Notholt; Bernard Lejeune; Philippe Demoulin; Nicholas Jones; David W. T. Griffith; Dan Smale; John Robinson
Atmospheric Measurement Techniques | 2011
Andreas Wiegele; N. Glatthor; M. Höpfner; U. Grabowski; S. Kellmann; A. Linden; G. P. Stiller; T. von Clarmann
Atmospheric Measurement Techniques | 2014
Andreas Wiegele; Mike Schneider; F. Hase; Sabine Barthlott; O. E. García; E. Sepúlveda; Y. González; Thomas Blumenstock; Uwe Raffalski; M. Gisi; R. Kohlhepp
Atmospheric Measurement Techniques | 2014
Matthias Schneider; Y. González; Christoph Dyroff; Emanuel Christner; Andreas Wiegele; Sabine Barthlott; O. E. García; Eliezer Sepúlveda; Frank Hase; Javier Andrey; Thomas Blumenstock; C. Guirado; R. Ramos; Sergio Rodríguez
Atmospheric Measurement Techniques | 2014
Sabine Barthlott; Matthias Schneider; Frank Hase; Andreas Wiegele; Emanuel Christner; Y. González; Thomas Blumenstock; S. Dohe; Omaira García; Eliezer Sepúlveda; Kimberly Strong; J. Mendonca; Dan Weaver; Mathias Palm; Nicholas M Deutscher; Thorsten Warneke; Justus Notholt; Bernard Lejeune; Emmanuel Mahieu; Nicholas Jones; David W. T. Griffith; V. Velazco; Dan Smale; John Robinson; Rigel Kivi; Pauli Heikkinen; Uwe Raffalski
Atmospheric Chemistry and Physics | 2012
N. Glatthor; M. Höpfner; K. Semeniuk; A. Lupu; Paul I. Palmer; J. C. McConnell; Jacek Wojciech Kaminski; T. von Clarmann; G. P. Stiller; B. Funke; S. Kellmann; A. Linden; Andreas Wiegele
Atmospheric Measurement Techniques | 2016
Matthias Schneider; Andreas Wiegele; Sabine Barthlott; Yenny González; Emanuel Christner; Christoph Dyroff; Omaira García; F. Hase; Thomas Blumenstock; Eliezer Sepúlveda; Gizaw Mengistu Tsidu; Samuel Takele Kenea; Sergio Rodríguez; Javier Andrey
Atmospheric Chemistry and Physics | 2016
M. Chirkov; G. P. Stiller; A. Laeng; S. Kellmann; T. von Clarmann; C. D. Boone; J. W. Elkins; Andreas Engel; N. Glatthor; U. Grabowski; Christina M. Harth; M. Kiefer; Felicia Kolonjari; P. B. Krummel; A. Linden; C. Lunder; Benjamin R. Miller; Stephen A. Montzka; Jens Mühle; Simon O'Doherty; J. Orphal; Ronald G. Prinn; G. C. Toon; Martin K. Vollmer; Kaley A. Walker; Ray F. Weiss; Andreas Wiegele; Dickon Young
Atmospheric Chemistry and Physics | 2016
Yenny González; Matthias Schneider; Christoph Dyroff; Sergio Rodríguez; Emanuel Christner; Omaira García; E. Cuevas; Juan José de Bustos; R. Ramos; Carmen Guirado-Fuentes; Sabine Barthlott; Andreas Wiegele; Eliezer Sepúlveda