Response of a deciduous forest to the Mount Pinatubo eruption: enhanced photosynthesis.
Volcanic aerosols from the 1991 Mount Pinatubo eruption greatly increased diffuse radiation worldwide for the following 2 years. We estimated that this increase in diffuse radiation alone enhanced noontime photosynthesis of a deciduous forest by 23% in 1992 and 8% in 1993 under cloudless conditions. This finding indicates that the aerosol-induced increase in diffuse radiation by the volcano enhanced the terrestrial carbon sink and contributed to the temporary decline in the growth rate of atmospheric carbon dioxide after the eruption.
Gu
Lianhong
L
Environmental Sciences Division, Building 1509, Oak Ridge National Laboratory, Oak Ridge, TN 37831-6335, USA. lianhong-gu@ornl.gov
Baldocchi
Dennis D
DD
Wofsy
Steve C
SC
Munger
J William
JW
Michalsky
Joseph J
JJ
Urbanski
Shawn P
SP
Boden
Thomas A
TA
D000336:Aerosols; D001272:Atmosphere; D002245:Carbon Dioxide / Q000378:metabolism; D002980:Climate; D017753:Ecosystem; D008433:Mathematics; D015233:Models, Statistical; D017711:Nonlinear Dynamics; D010679:Philippines; D010788:Photosynthesis; D012044:Regression Analysis; D012542:Scattering, Radiation; D012621:Seasons; D013472:Sunlight; D013696:Temperature; D014197:Trees / Q000378:metabolism*; D018707:Volcanic Eruptions
D000336:Aerosols; D002245:Carbon Dioxide