scholarly journals Distributed chaos of the atmospheric tracers

2021 ◽  
Author(s):  
Alexander Bershadskii
Keyword(s):  
Atmospheric Tracers

Climate and Atmospheric Tracers Modelling with GCM, Polar Applications

1996 ◽  
pp. 573-579
Author(s):  
Christophe Genthon ◽  
Alexandre Armengaud ◽  
Gerhard Krinner
Keyword(s):  
Atmospheric Tracers

Analysis of Intermittency in Aircraft Measurements of Velocity, Temperature and Atmospheric Tracers using Wavelet Transforms

1997 ◽  
pp. 85-102 ◽  
Author(s):  
Julio T. Bacmeister ◽  
Stephen D. Eckermann ◽  
Lynn Sparling ◽  
K. Roland Chan ◽  
Max Loewenstein ◽  
...  
Keyword(s):  
Wavelet Transforms ◽  
Aircraft Measurements ◽  
Atmospheric Tracers

Field studies of transport and dispersion of atmospheric tracers in nocturnal drainage flows

1984 ◽  
Vol 18 (4) ◽  
pp. 713-731 ◽  
Author(s):  
Paul H. Gudiksen ◽  
Gilbert J. Ferber ◽  
Malcolm M. Fowler ◽  
Wynn L. Eberhard ◽  
Michael A. Fosberg ◽  
...  
Keyword(s):  
Field Studies ◽  
Drainage Flows ◽  
Atmospheric Tracers

Eulerian backtracking of atmospheric tracers. II: Numerical aspects

2006 ◽  
Vol 132 (615) ◽  
pp. 585-603 ◽  
Author(s):  
F. Hourdin ◽  
O. Talagrand ◽  
A. Idelkadi
Keyword(s):  
Atmospheric Tracers

scholarly journals Analysis of space-based observations of peroxyacetyl nitrate (PAN) and its relation to other atmospheric tracers

2021 ◽  
Author(s):  
Bruno Franco ◽  
Lieven Clarisse ◽  
Cathy Clerbaux ◽  
Pierre-François Coheur
Keyword(s):  
Time Series ◽  
Spatial Distribution ◽  
Tropospheric Chemistry ◽  
Boreal Summer ◽  
Peroxyacetyl Nitrate ◽  
Ozone Monitoring Instrument ◽  
Source Regions ◽  
Comprehensive Picture ◽  
The Tropics ◽  
Atmospheric Tracers

<p>Peroxyacetyl nitrate (CH<sub>3</sub>C(O)O<sub>2</sub>NO<sub>2</sub>; abbreviated as PAN) is the main tropospheric reservoir of nitrogen oxide radicals (NO<sub>x</sub>) and contributes to redistributing NO<sub>x</sub> from source to remote regions. Recently, PAN total columns have been retrieved from the radiance spectra recorded by IASI (Infrared Atmospheric Sounding Interferometer) onboard the Metop satellite platforms, using a neural network-based retrieval approach. The daily global distributions obtained from these measurements provide a comprehensive picture of PAN through the troposphere.</p><p>Here we exploit as a climatology the 13-year time series of global PAN measurements derived from the IASI/Metop-A observations (October 2007 - December 2020) to characterize the spatial distribution and seasonal variability of PAN abundance worldwide. In particular, continental areas within the tropics appear to be source regions of PAN throughout the year, whereas PAN at North Hemisphere mid- and high latitudes exhibits a more pronounced seasonal cycle and peaks during the boreal summer. Strong outflows of PAN are captured over the oceans, downwind of continental source regions such as Eastern Asia and Eastern US. This dataset also allows us to investigate the recent trends of atmospheric PAN abundance over the last 13 years, over both source and remote areas.</p><p>To better understand what drives the spatial distribution and variability of PAN, we analyze alongside the regional time series of PAN those of carbon monoxide (CO) from IASI/Metop-A, and of formaldehyde (HCHO) and nitrogen dioxide (NO<sub>2</sub>) from OMI/Aura (Ozone Monitoring Instrument). Locally, we find simultaneous enhancements of PAN and CO abundances, which in this case indicates that most PAN originates from fire-derived precursors. This mainly occurs over the typical biomass burning regions in the tropics. Overall, strong correlations are observed over source areas between PAN and HCHO, which is used here as a tracer of tropospheric chemistry and of the presence of oxygenated volatile organic compounds (OVOCs), while there is no particular correlation with NO<sub>2</sub>. The preliminary results suggest that PAN distribution and seasonality is primarily driven by the availability in OVOCs, and hence in peroxyacetyl radical, and that a locally weak NO<sub>2</sub> abundance does not prevent the formation of PAN.</p>

scholarly journals Sensitivity of ensemble Lagrangian reconstructions to assimilated wind time step resolution

2009 ◽  
Vol 9 (2) ◽  
pp. 8619-8633
Author(s):  
I. Pisso ◽  
V. Marécal ◽  
B. Legras ◽  
G. Berthet
Keyword(s):  
High Resolution ◽  
Spatial Resolution ◽  
Time Resolution ◽  
Wind Fields ◽  
Time Step ◽  
Coarse Resolution ◽  
Temporal And Spatial ◽  
Atmospheric Tracers

Abstract. The aim of this study is to define the optimal temporal and spatial resolution required for accurate offline diffusive Lagrangian reconstructions of high resolution in-situ tracers measurements based on meteorological wind fields and on coarse resolution 3-D tracer distributions. Increasing the time resolution of the advecting winds from three to one hour intervals has a modest impact on diffusive reconstructions in the case studied. This result is discussed in terms of the effect on the geometry of transported clouds of points in order to set out a method to assess the effect of meteorological flow on the transport of atmospheric tracers.

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