Antarctica SMB Projections

“Projections of Antarctic SMB changes over the 21st century thus indicate a negative contribution to sea level because of the projected widespread increase in snowfall
associated with warming air temperatures (Krinner et al., 2007; Uotila et al., 2007; Bracegirdle et al., 2008). Several studies (Krinner et al., 2007; Uotila et al., 2007; Bengtsson et al., 2011) have shown that the precipitation increase is directly linked to atmospheric warming via the increased moisture holding capacity of warmer air, and is therefore
larger for scenarios of greater warming. The relationship is exponential, resulting in an increase of SMB as a function of Antarctic SAT change evaluated in various recent studies with high-resolution (~60 km) models as 3.7% °C–1 (Bengtsson et al., 2011), 4.8% °C–1 (Ligtenberg et al., 2013) and ~7% °C–1 (Krinner et al., 2007). These agree well with the sensitivity of 5.1 ± 1.5% °C–1 (one standard deviation) of CMIP3 AOGCMs (Gregory and Huybrechts, 2006).” – AR5


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s