In the
west it was very dry at the same time with favorable weather conditions. The summer was
warm and considered fine in the North and East but in the south it was very wet and dull. The
autumn was fine, November extraordinarily warm, but the year ended with an unruly and
rather cold December.
Temperature
The year was very warm, +1.4 to +2.6°C above the 1961 to 1990 average. The lowest
/media/vedurstofan/utgafa/skylduskil/ved-eng-2014.pdf
við vatnamælingar í Veiðivötnum í kringum 1963. Sigurjón var frumkvöðull í vatnamælingum hér á landi sem urðu afar
mikilvægar við alla áætlanagerð um vatnsorkubúskap þjóðarinnar. Úr myndasafni Sigurjóns Rist.
ÁRSSKÝRSLA 2019
14
Fyrsta landsnet jarðskjálftamæla
Á sjötta og sjöunda tug síðustu aldar voru jarðskjálftamælingar efldar að mun og árið 1968 var fyrsta landsnet jarð-
skjálftamæla
/media/vedurstofan-utgafa-2020/VI_arsskyrsla2020.pdf
Hekla eruptions often result in multiple hazards, including tephra emissions, lava flows, pyroclastic flows and flooding due to snow-melt. Depending on weather conditions at the time of the next eruption, fine-grained ash could be lofted to high elevation, with international implications for air travel. Since 1970, the volcano has erupted at roughly decadal intervals (1970, 1980-81, 1991 and 2000
/about-imo/news/monitoring-hekla
< 64 mm Ash d < 2 mm Fine ash d < 0.063 mm Table 1 Terminology
of pyroclast material and its size.At ground level volcanic tephra can cause: Health issues; Roofs/building collapse; Poor visibility conditions; Dangerous road conditions; Contamination of water reservoirs and vegetation; Damages to electrical infrastructures; Transportation system disruptions; Impact on telecommunication networks
/volcanoes/volcanic-hazards/volcanic-emissions/
þessum breytingum og fá þær tillögur vonandi
brautargengi hjá stjórnvöldum þannig að Veðurstofan geti sinnt
samþættingu á þessum mikilvæga málaflokki inn í framtíðina og
staðið þannig undir hlutverki sínu samkvæmt lögum.
Samvinna og áreiðanleiki
Eitt meginmarkmið samruna Vatnamælinga og Veðurstofunnar fyrir
liðlega tíu árum var að bæta alla vöktun og viðbrögð vegna náttúru-
vár. Sameiningin
/media/vedurstofan/utgafa/arsskyrslur/VI_Arsskyrsla_2018_vef.pdf
and be advected far away by the wind. This
fraction of the pyroclastic material can possibly generate a distal deposit
very thin and covering wide areas.Term Size Ballistic d > 64 mm Lapilli 2 mm < d < 64 mm Ash d < 2 mm Fine ash d < 0.063 mm Table 1 Terminology
of pyroclast material and its size.At ground level volcanic tephra can cause: Health issues; Roofs/building collapse; Poor visibility
/volcanoes/grimsvotn-activity/faq/
the eastern half of the craters was measured and found to be up to 40 m thick. Intense steam rises up from the craters, with occasional small ashy explosions. The noise of intense boiling and or degassing is heard from the craters. The crater rim is coated with fine ash that extends 20 m from the edge. Strong smell of sulfur around the craters.
At 20:45 the steam plume was measured to be at the altitude
/earthquakes-and-volcanism/articles/nr/1884
(specifically stormwater)
water supply and management
salmon and ecosystems
energy
For summary see Climatic Change special issue, later this year
Assessment
Overview:
Study Region
Focus
Watersheds
• Columbia River
– Washington portion
• Puget Sound
– Green River
– Snohomish River
– Cedar River
– Tolt River
• Yakima River
Large Scale Model (VIC)
~12mi2 per cell
Hydrologic Simulations
Fine Scale Model
/media/ces/Lettenmaier_Dennis_CES_2010pdf.pdf
September 2014. Photo: Ingveldur Björg Jónsdóttir.
north and east and the weather was difficult. In the west it was very
dry at the same time, with favourable weather conditions. The sum-
mer was warm and considered fine in the north and east but in the
south it was wet and dull. The autumn was fine, November extraor-
dinarily warm, but the year ended with an unruly and rather cold
December.
Photo
/media/vedurstofan/utgafa/skyrslur/2015/IMO_AnnualReport2014.pdf
tíma er
litið.
Hámarksúrkomutölurnar í töflu 3 byggja á tölfræðilegri greiningu á gögnum eftir 1949 og segja
ekki alla söguna um aftakaúrkomu á Akureyri þegar lengra tímabil er skoðað. Aftakaúrkoma
einkennist víða af einstökum hellirigningum sem geta fallið utan leitnilínu sem byggð er á nokk-
urra daga hámarksúrkomu mánaða og ára. Þannig mældist 92mm sólarhringsúrkoma á Akureyri
þann 24. september
/media/vedurstofan/utgafa/skyrslur/2010/VI2010-006_web.pdf