PhD student, Atmospheric Sciences Dept., University of Washington, Seattle, USA
advisor: Dargan Frierson
email: jscheff (atsymbol) uw (period) edu
office: 620, ATG Building
favorite interdisciplinary program: UW's Program on Climate Change
Is there a relationship between planetary temperature and terrestrial water availability in general? If so, is the sign positive (as often inferred by paleoclimatologists) or negative (as implied by models?) Why? How much do models differ on this?
Are modern climate models' land representations systematically "too dry?" If so, in what sense? Are the atmospheric inputs to the land schemes biased dry, or does the land respond to given inputs unrealistically?
How has our atmosphere's general circulation changed in historical time? Has upper-level baroclinicity increased, in line with theory? (If not, can this explain observed surface wind "stilling?") What explains the changes in the extratropical southern hemisphere cold season?
How can we understand the modeled terrestrial hydroclimate response to solar geoengineering? Does the (potential) evaporation decrease offset the precipitation decrease in any meaningful sense?
Scheff, J., and D. Frierson, 2013: Scaling potential evapotranspiration with greenhouse warming. J. Clim., in press, doi:10.1175/JCLI-D-13-00233.1.
Scheff, J., and D. Frierson, 2012: Robust future precipitation declines in CMIP5 largely reflect the poleward expansion of model subtropical dry zones. Geophys. Res. Lett., 39, L18704, doi:10.1029/2012GL052910. (supplementary figure S1) (supplementary figure S2)
Scheff, J., and D. Frierson, 2012: Twenty-first-century multimodel subtropical precipitation declines are mostly midlatitude shifts. J. Clim., 25, 4330-4347, doi:10.1175/JCLI-D-11-00393.1.
Scheff, J., 2011: CMIP3 21st century robust subtropical precipitation declines are mostly mid-latitude shifts. M.S. thesis, Dept. of Atmospheric Sciences, University of Washington, 66 pp.