Large-scale upper tropospheric pollution observed by MIPAS HCN and C&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;H&amp;lt;sub&amp;gt;6&amp;lt;/sub&amp;gt; global distributions

Glatthor, N.; Clarmann, T. von; Stiller, G. P.; Funke, B.; Koukouli, M. E.; Fischer, H.; Grabowski, U.; Höpfner, Michael; Kellmann, S.; Linden, A.

doi:10.5194/acp-9-9619-2009

Cited by 40 publications

(41 citation statements)

References 44 publications

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“…For the strongest lines used in MIPAS HCN retrieval, these uncertainties are between 5 and 10 % both for line intensity and for pressure broadening. More information on HCN error calculation can be found in Glatthor et al (2009) and Wiegele et al (2012). The verti- cal resolution is 4-5 km in the altitude range 6 to 20 km and increases to 6 km at 25 km and to 8 km at 33 km.…”

Section: Retrieval Methods and Error Estimationmentioning

confidence: 99%

“…in von Clarmann et al (2003) and Höpfner et al (2004). Retrieval of HCN from MIPAS HR spectra has been described by Glatthor et al (2009) and from RR spectra by Wiegele et al (2012). The discussed data versions were V3O_HCN_2 and V5R_HCN_220, respectively.…”

Section: Retrieval Methods and Error Estimationmentioning

confidence: 99%

“…Today, HCN is considered as an almost unambiguous tracer of biomass burning Singh et al, 2003;Yokelson et al, 2007;Lupu et al, 2009). HCN has been used as tracer of biomass burning by, for example, Glatthor et al (2009) and Tereszchuk et al (2013). The latter authors emphasised the advantage of HCN over CO, which has additional anthropogenic sources.…”

Section: Introductionmentioning

confidence: 99%

“…the southern hemispheric biomass burning plume peaking in October and November, caused by combustion throughout the preceding dry season in austral spring in South America, central and southern Africa, and Australia. The spatial extension and composition of this plume has been investigated using various ground-based, airborne and spaceborne observations (Singh et al, 1996(Singh et al, , 2000Rinsland et al, 2001Rinsland et al, , 2005von Clarmann et al, 2007;Glatthor et al, 2009). In El Niño years, characterised by dry periods in Indonesia, fire emissions from this region are a considerable additional contribution to tropical biomass burning in austral spring.…”

Section: Introductionmentioning

confidence: 99%

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Seasonal and interannual variations in HCN amounts in the upper troposphere and lower stratosphere observed by MIPAS

et al. 2015

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Section: Retrieval Methods and Error Estimationmentioning

confidence: 99%

Section: Retrieval Methods and Error Estimationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Seasonal and interannual variations in HCN amounts in the upper troposphere and lower stratosphere observed by MIPAS

et al. 2015

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“…For instance, the Infrared Atmospheric Sounding Interferometer (IASI) has measured CH 3 OH and HCOOH globally from space, but no observations are available above 45 • N in winter and 65 • N in summer, because of the thermal emission sensitivity of this instrument (Razavi et al, 2011). The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) limb emission instrument mapped upper-tropospheric distributions of several species, such as HCN and C 2 H 6 (Glatthor et al, 2009). It also measured HCOOH at a 10 km altitude between 70 and 90 • N (Grutter et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Five years of CO, HCN, C2H6, C2H2, CH3OH, HCOOH and H2CO total columns measured in the Canadian high Arctic

et al. 2014

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Abstract. We present a five-year time series of seven tropospheric species measured using a ground-based Fourier transform infrared (FTIR) spectrometer at the Polar Environment Atmospheric Research Laboratory (PEARL; Eureka, Nunavut, Canada; 80 • 05 N, 86 • 42 W) from 2007 to 2011. Total columns and temporal variabilities of carbon monoxide (CO), hydrogen cyanide (HCN) and ethane (C 2 H 6 ) as well as the first derived total columns at Eureka of acetylene (C 2 H 2 ), methanol (CH 3 OH), formic acid (HCOOH) and formaldehyde (H 2 CO) are investigated, providing a new data set in the sparsely sampled high latitudes.Total columns are obtained using the SFIT2 retrieval algorithm based on the optimal estimation method. The microwindows as well as the a priori profiles and variabilities are selected to optimize the information content of the retrievals, and error analyses are performed for all seven species. Our retrievals show good sensitivities in the troposphere. The seasonal amplitudes of the time series, ranging from 34 to 104 %, are captured while using a single a priori profile for each species. The time series of the CO, C 2 H 6 and C 2 H 2 total columns at PEARL exhibit strong seasonal cycles with maxima in winter and minima in summer, in opposite phase to the HCN, CH 3 OH, HCOOH and H 2 CO time series. These cycles result from the relative contributions of the photochemistry, oxidation and transport as well as biogenic and biomass burning emissions.Comparisons of the FTIR partial columns with coincident satellite measurements by the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS) show good agreement. The correlation coefficients and the slopes range from 0.56 to 0.97 and 0.50 to 3.35, respectively, for the seven target species.Our new data set is compared to previous measurements found in the literature to assess atmospheric budgets of these tropospheric species in the high Arctic. The CO and C 2 H 6 concentrations are consistent with negative trends observed over the Northern Hemisphere, attributed to fossil fuel emission decrease. The importance of poleward transport for the atmospheric budgets of HCN and C 2 H 2 is highlighted. Columns and variabilities of CH 3 OH and HCOOH at PEARL are comparable to previous measurements performed at other remote sites. However, the small columns of H 2 CO in early May might reflect its large atmospheric variability and/or the effect of the updated spectroscopic parameters used in our retrievals. Overall, emissions from biomass burning contribute to the day-to-day variabilities of the seven tropospheric species observed at Eureka.

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A comprehensive overview of the climatological composition of the Asian summer monsoon anticyclone based on 10 years of Aura Microwave Limb Sounder measurements

et al. 2017

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Intense deep convection associated with the Asian summer monsoon (ASM) lofts surface pollutants to the upper troposphere/lower stratosphere (UTLS), where strong winds and long chemical lifetimes allow intercontinental transport, affecting atmospheric composition around the globe. The Aura Microwave Limb Sounder (MLS), launched in 2004, makes simultaneous colocated measurements of trace gases and cloud ice water content (a proxy for deep convection) in the UTLS on a daily basis. Here we exploit the dense spatial and temporal coverage, long‐term data record, extensive measurement suite, and insensitivity to aerosol and most clouds of Aura MLS to characterize the climatological (2005–2014) composition of the ASM anticyclone throughout its annual life cycle. We use version 4 MLS data to quantify spatial and temporal variations in both tropospheric (H2O, CO, CH3Cl, CH3CN, CH3OH) and stratospheric (O3, HNO3, HCl) tracers on four potential temperature surfaces (350–410 K). Inside the mature anticyclone, all species exhibit substantial changes, not only from their premonsoon distributions in the ASM region but also from their summertime distributions in the rest of the hemisphere. Different tracers exhibit dissimilar seasonal evolution, and the exact location and timing of their extreme values vary. Although individual aspects of the anticyclone have been described previously, we present a uniquely comprehensive overview of the climatological seasonal evolution of the ASM and its impact on UTLS composition. This work provides valuable context for planned in situ measurements as well as a benchmark for model evaluation and future investigations of interannual variability and long‐term changes in monsoon processes.

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Large-scale upper tropospheric pollution observed by MIPAS HCN and C<sub>2</sub>H<sub>6</sub> global distributions

Abstract: Abstract. We present global upper tropospheric HCN and C 2 H 6 amounts derived from MIPAS/ENVISAT limb emission spectra. HCN and C 2 H 6 are retrieved in the spectral regions 715.5-782.7 cm −1 and 811.5-835.7 cm −1

Cited by 40 publications

References 44 publications

Seasonal and interannual variations in HCN amounts in the upper troposphere and lower stratosphere observed by MIPAS

Seasonal and interannual variations in HCN amounts in the upper troposphere and lower stratosphere observed by MIPAS

Five years of CO, HCN, C<sub>2</sub>H<sub>6</sub>, C<sub>2</sub>H<sub>2</sub>, CH<sub>3</sub>OH, HCOOH and H<sub>2</sub>CO total columns measured in the Canadian high Arctic

A comprehensive overview of the climatological composition of the Asian summer monsoon anticyclone based on 10 years of Aura Microwave Limb Sounder measurements

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Large-scale upper tropospheric pollution observed by MIPAS HCN and C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt; global distributions

Abstract: Abstract. We present global upper tropospheric HCN and C 2 H 6 amounts derived from MIPAS/ENVISAT limb emission spectra. HCN and C 2 H 6 are retrieved in the spectral regions 715.5-782.7 cm −1 and 811.5-835.7 cm −1

Cited by 40 publications

References 44 publications

Seasonal and interannual variations in HCN amounts in the upper troposphere and lower stratosphere observed by MIPAS

Seasonal and interannual variations in HCN amounts in the upper troposphere and lower stratosphere observed by MIPAS

Five years of CO, HCN, C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;6&lt;/sub&gt;, C&lt;sub&gt;2&lt;/sub&gt;H&lt;sub&gt;2&lt;/sub&gt;, CH&lt;sub&gt;3&lt;/sub&gt;OH, HCOOH and H&lt;sub&gt;2&lt;/sub&gt;CO total columns measured in the Canadian high Arctic

A comprehensive overview of the climatological composition of the Asian summer monsoon anticyclone based on 10 years of Aura Microwave Limb Sounder measurements

Contact Info

Product

Resources

About

Large-scale upper tropospheric pollution observed by MIPAS HCN and C<sub>2</sub>H<sub>6</sub> global distributions

Five years of CO, HCN, C<sub>2</sub>H<sub>6</sub>, C<sub>2</sub>H<sub>2</sub>, CH<sub>3</sub>OH, HCOOH and H<sub>2</sub>CO total columns measured in the Canadian high Arctic