scholarly journals Initial assessment of the stratospheric and climatic impact of the 1991 Mount Pinatubo eruption: Prologue

1992 ◽  
Vol 19 (2) ◽  
pp. 149-149 ◽  
Author(s):  
M. P. McCormick
Keyword(s):  
Initial Assessment ◽  
Climatic Impact ◽  
Mount Pinatubo ◽  
Pinatubo Eruption

Long-term observations of the midlatitude stratospheric aerosol from the Mount Pinatubo eruption

1996 ◽  
Author(s):  
David C. Woods ◽  
David M. Winker ◽  
Otto Youngbluth, Jr. ◽  
Mary T. Osborn ◽  
Robert J. DeCoursey
Keyword(s):  
Stratospheric Aerosol ◽  
Mount Pinatubo ◽  
Pinatubo Eruption

scholarly journals Can we explain the observed methane variability after the Mount Pinatubo eruption?

2015 ◽  
Vol 15 (13) ◽  
pp. 19111-19160
Author(s):  
N. Bândă ◽  
M. Krol ◽  
M. van Weele ◽  
T. van Noije ◽  
P. Le Sager ◽  
...  
Keyword(s):  
Growth Rate ◽  
Biomass Burning ◽  
Partial Recovery ◽  
Mount Pinatubo ◽  
Sources And Sinks ◽  
Time Period ◽  
Pinatubo Eruption ◽  
Emission Changes

Abstract. The CH4 growth rate in the atmosphere showed large variations after the Pinatubo eruption in June 1991. A decrease of more than 10 ppb yr-1 in the growth rate over the course of 1992 was reported and a partial recovery in the following year. Although several reasons have been proposed to explain the evolution of CH4 after the eruption, their contributions to the observed variations are not yet resolved. CH4 is removed from the atmosphere by the reaction with tropospheric OH, which in turn is produced by O3 photolysis under UV radiation. The CH4 removal after the Pinatubo eruption might have been affected by changes in tropospheric UV levels due to the presence of stratospheric SO2 and sulfate aerosols, and due to enhanced ozone depletion on Pinatubo aerosols. The perturbed climate after the eruption also altered both sources and sinks of atmospheric CH4. Furthermore, CH4 concentrations were influenced by other factors of natural variability in that period, such as ENSO and biomass burning events. Emissions of CO, NOX and NMVOCs also affected CH4 concentrations indirectly by influencing tropospheric OH levels. Potential drivers of CH4 variability are investigated using the TM5 global chemistry model. The contribution that each driver had to the global CH4 variability during the period 1990 to 1995 is quantified. We find that a decrease of 8–10 ppb yr-1 CH4 is explained by a combination of the above processes. However, the timing of the minimum growth rate is found 6–9 months later than observed. The long-term decrease in CH4 growth rate over the period 1990 to 1995 is well captured and can be attributed to an increase in OH concentrations over this time period. Potential uncertainties in our modelled CH4 growth rate include emissions of CH4 from wetlands, biomass burning emissions of CH4 and other compounds, biogenic NMVOC and the sensitivity of OH to NMVOC emission changes. Two inventories are used for CH4 emissions from wetlands, ORCHIDEE and LPJ, to investigate the role of uncertainties in these emissions. Although the higher climate sensitivity of ORCHIDEE improves the simulated CH4 growth rate change after Pinatubo, none of the two inventories properly captures the observed CH4 variability in this period.

Aerosols as dynamical tracers in the lower stratosphere: Ozone versus aerosol correlation after the Mount Pinatubo eruption

1995 ◽  
Vol 100 (D6) ◽  
pp. 11147 ◽  
Author(s):  
S. Borrmann ◽  
J. E. Dye ◽  
D. Baumgardner ◽  
M. H. Proffitt ◽  
J. J. Margitan ◽  
...  
Keyword(s):  
Lower Stratosphere ◽  
Mount Pinatubo ◽  
Pinatubo Eruption

Radiative Climate Forcing by the Mount Pinatubo Eruption

Science ◽  
1993 ◽  
Vol 259 (5100) ◽  
pp. 1411-1415 ◽  
Author(s):  
P. Minnis ◽  
E. F. Harrison ◽  
L. L. Stowe ◽  
G. G. Gibson ◽  
F. M. Denn ◽  
...  
Keyword(s):  
Climate Forcing ◽  
Mount Pinatubo ◽  
Pinatubo Eruption

scholarly journals Global temperature response to the major volcanic eruptions in multiple reanalysis data sets

2015 ◽  
Vol 15 (23) ◽  
pp. 13507-13518 ◽  
Author(s):  
M. Fujiwara ◽  
T. Hibino ◽  
S. K. Mehta ◽  
L. Gray ◽  
D. Mitchell ◽  
...  
Keyword(s):  
Lower Stratosphere ◽  
Temperature Response ◽  
Reanalysis Data ◽  
Global Temperature ◽  
Data Sets ◽  
Data Set ◽  
Mount Pinatubo ◽  
Upper Troposphere ◽  
El Chichón ◽  
Pinatubo Eruption

Abstract. The global temperature responses to the eruptions of Mount Agung in 1963, El Chichón in 1982, and Mount Pinatubo in 1991 are investigated using nine currently available reanalysis data sets (JRA-55, MERRA, ERA-Interim, NCEP-CFSR, JRA-25, ERA-40, NCEP-1, NCEP-2, and 20CR). Multiple linear regression is applied to the zonal and monthly mean time series of temperature for two periods, 1979–2009 (for eight reanalysis data sets) and 1958–2001 (for four reanalysis data sets), by considering explanatory factors of seasonal harmonics, linear trends, Quasi-Biennial Oscillation, solar cycle, and El Niño Southern Oscillation. The residuals are used to define the volcanic signals for the three eruptions separately, and common and different responses among the older and newer reanalysis data sets are highlighted for each eruption. In response to the Mount Pinatubo eruption, most reanalysis data sets show strong warming signals (up to 2–3 K for 1-year average) in the tropical lower stratosphere and weak cooling signals (down to −1 K) in the subtropical upper troposphere. For the El Chichón eruption, warming signals in the tropical lower stratosphere are somewhat smaller than those for the Mount Pinatubo eruption. The response to the Mount Agung eruption is asymmetric about the equator with strong warming in the Southern Hemisphere midlatitude upper troposphere to lower stratosphere. Comparison of the results from several different reanalysis data sets confirms the atmospheric temperature response to these major eruptions qualitatively, but also shows quantitative differences even among the most recent reanalysis data sets. The consistencies and differences among different reanalysis data sets provide a measure of the confidence and uncertainty in our current understanding of the volcanic response. The results of this intercomparison study may be useful for validation of climate model responses to volcanic forcing and for assessing proposed geoengineering by stratospheric aerosol injection, as well as to link studies using only a single reanalysis data set to other studies using a different reanalysis data set.

Observed episodic warming at 86 and 100 km between 1990 and 1997: Effects of Mount Pinatubo Eruption

1998 ◽  
Vol 25 (4) ◽  
pp. 497-500 ◽  
Author(s):  
C. Y. She ◽  
Steven W. Thiel ◽  
David A. Krueger
Keyword(s):  
Mount Pinatubo ◽  
Pinatubo Eruption

Tropospheric ozone decrease due to the Mount Pinatubo eruption: Reduced stratospheric influx

2013 ◽  
Vol 40 (20) ◽  
pp. 5553-5558 ◽  
Author(s):  
Qi Tang ◽  
Peter G. Hess ◽  
Benjamin Brown-Steiner ◽  
Douglas E. Kinnison
Keyword(s):  
Tropospheric Ozone ◽  
Mount Pinatubo ◽  
Pinatubo Eruption
Sign in / Sign up

Export Citation Format

Share Document