The
role of orography was found to be crucial in determining the precipitation dis-
tribution and amount.
Atmospheric flow over Iceland was simulated for the period January 1961
through June 2006 using version 3–7–3 of the PSU/NCAR MM5 mesoscale
model (Grell et al., 1995). The domain used is 123× 95 points, centered at
64◦ N and 19.5◦ W, with a horizontal resolution of 8 km. There are 23 vertical
/media/ces/Paper-Olafur-Rognvaldsson_91.pdf
hydrological model. J. Hydrol., 267, 40–52.
Jasper, K., and Kaufmann P. 2003. Coupled runoff simulations as validation
tools for atmospheric models at the regional scale. Q. J. R. Meteorol. Soc., 129,
673–692.
Jóhannesson, T., Aðalgeirsdóttir G., Björnsson H., Crochette P., Elíasson E.
B., Guðmundsson S., Jónsdóttir J. F., Ólafsson H., Pálsson F., Rögnvaldsson
Ó., Sigurðsson O., Snorrason Á
/media/ces/Paper-Olafur-Rognvaldsson_92.pdf
properly even if the
sample size is increased and systematic biases may be expected.
2.2.3 Predictors
Mean sea level pressure (MSLP), geopotential height (Z), specific humidity (q) and tempera-
ture (T) at different pressure levels are considered in this study to describe the meteorological
situations at the synoptic scale and to identify weather analogues. The MSLP and geopotential
height (Z) describe
/media/vedurstofan/utgafa/skyrslur/2014/VI_2014_006.pdf
is on the northern North Atlantic and the Nordic Seas. With the southern
boundary at 47 N, the study domain covers Newfoundland, but excludes various marginal and
inland seas with significant independent storm activity, such as the Mediterranean and Adriatic
Seas, as well as the Black and Caspian Seas. The northern boundary at 80 N takes the domain
up to Fram Strait, including Svalbard, but excluding
/media/vedurstofan/utgafa/skyrslur/2015/VI_2015_005.pdf
the maximum discharge of jökulhlaup water at the glacier
terminus is estimated as 97 m3 s 1. This jökulhlaup was a fast-rising jökulhlaup as
other jökulhlaups in Skaftá and cannot be described by the traditional Nye-theory of
jökulhlaups. The total volume of flood water was estimated as 53 Gl. The average
propagation speed of the subglacial jökulhlaup flood front was found to be in the range
0.2–0.4 m s 1
/media/vedurstofan/utgafa/skyrslur/2009/VI_2009_006_tt.pdf
: 3601/B2007.EEA53004 and 3601/RO/CLC/
B2007.EEA52971, Landmælingar Íslands, Reykjavik, Iceland.
Bechtold, P., Köhler, M., Jung, T., Doblas-Reyes, F., Leutbecher, M., Rodwell, M. J., Vitart, F.,
and Balsamo, G. (2008). Advances in simulating atmospheric variability with the ECMWF
model: from synoptic to decadal time-scales. Q. J. R. Meterol. Soc., 134:1337–1351.
Brousseau, P., Berre, L., Bouttier
/media/vedurstofan/utgafa/skyrslur/2014/VI_2014_005.pdf
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/media/loftslag/Outline_for_the_case_Road_maintenance_in_a_changing_climate.pdf
wide and
1000 m long shelf called Þófi, terminating at 80–100 m a.s.l., see Map 4. The inclination of
the shelf is 15 on average. The surface of Þófi is covered with unconsolidated glacial till and
landslide deposits and marked with five gullies. The brook called Þófalækur near the middle of
the shelf divides it into an inner and outer part. On the outermost part of the shelf, there is a small
/media/vedurstofan-utgafa-2016/VI_2016_006_rs.pdf
m 2 or less, compared with losses of 80 W m 2 or more over neigh-
bouring cloud-free regions. The conditions around midnight, off the southeast coast on 27 July,
and along the north coast on 3 September, clearly show the limited ability (in the model) of even
a complete high-level cloud cover to affect the longwave radiation balance at the surface. Mid-
level clouds are usually simulated together
/media/vedurstofan/utgafa/skyrslur/2015/VI_2015_006.pdf
approximately centred around Iceland: the outer domain with
43 42 grid points spaced at 27 km (1134 1107 km), the intermediate domain with 95 90 grid
points spaced at 9 km, and the inner domain with 196 148 grid points spaced at 3 km. The
northwest corner of the outer domain covers a part of the southeast coastal region of Greenland.
Otherwise, the only landmass included in the model domain
/media/vedurstofan/utgafa/skyrslur/2013/2013_001_Nawri_et_al.pdf