Publikasjoner

Measurement of volcanic ash in Norwegian air space. WP 1.4.4 Reduced uncertainty in satellite-based estimates of ash concentrations. NILU OR

Kylling, A.

Satellite-based measurements of volcanic ash give the total amount of volcanic ash per area, typically in units of grams of volcanic ash per square meter. To convert this to concentration the vertical thickness of the ash cloud is needed. The ash cloud thickness is not available from passive remote sensors, e.g. IR-sensors, but may be obtained from ground- and space-based lidars. Dispersion models will also provide information of the ash thickness.
This report gives an overview of volcanic ash cloud thickness as observed by space, aircraft and ground-based lidars. Also, ash cloud thickness as simulated by the Flexpart particle dispersion model is analysed. The impact of varying cloud thickness on the signal measured by IR-sensor in space is investigated. Focus is on the Eyjafjallajokull 2010 eruption for which a unique wealth of data are available.

Modellering av vulkanaske i norsk luftfrom. Pkt. 1.3 Enkle forbedringer av utslippsestimat. NILU OR

Kristiansen, N.I.

Rapporten beskriver hvordan en transportmodell brukes til å simulere utslipp av aske fra vulkanutbrudd og hvordan askeutslippene kan beskrives i modellen. En rekke metoder for beregning av askeutslipp er presentert og utarbeidelse av forbedrede askeutslippestimat ved manuell analyse av satellittdata er presentert.

Closing the gaps in our knowledge of the hydrological cycle over land: Conceptual problems. NILU F

Lahoz, W.; de Lannoy, G.J.M.

Bringing assessments from committees to research communities. The HENVINET perspective. NILU PP

Bartonova, A.; Keune, H.; Fucic, A.; Gutleb, A.C.; van den Hazel, P.; Koppe J.; the HENVINET consortium.

Closing the gaps in our knowledge of the hydrological cycle over land: Conceptual problems and the role of data assimilation. NILU PP

Lahoz, W.; de Lannoy, G.J.M.

NanoShip: Are there any new particle formation events over the North Sea? NILU F

Kelbus, N.; Massling, A.; Lange, R.; Fiebig, M.; Henzing, B.; Glasius, M.; Bilde, M.; Nguyen, Q.T.; Moerman, M.; de Leeuw, G.; Dal Maso, M.; Niku Kivekäs, Kristensson, A.

Quantitative determination and time trends of perfluoroalkane sulfonates and sulfonamide-based precursors in herring from the Swedish west coast.

Ullah, S.; Huber, S.; Bignert, A.; Berger, U.

Air quality status in Europe. NILU F

Guerreiro, C.; de Leeuw, F.; Foltescu, V.

Annual cycle of background aerosol at Troll Station, Antarctica. NILU PP

Fiebig, M.; Hirdman, D.; Lunder, C.R.; Ogren, J.A.; Stohl, A.

ACTRIS - Aerosols, Clouds and Trace gases Research InfraStructure and access to ACTRIS Data: http://actris.nilu.no/ NILU PP

Myhre, C.L.; Pappalardo, G.; Laj, P.

Addressing pan-Arctic black carbon through the collective measurements of the IASOA observatories. NILU F

Burkhart, J.F.; Sharma, S.; Ogren, J.A.; Starkweather, S.; Bergin, M.H.; Eleftheriadis, K.; Lihavainen, H.; Fiebig, M.

Estimating sulfur hexafluoride (SF6) emissions in China using atmospheric observations and inverse modeling. NILU F

Fang, X.; Thompson, R.; Saito, T.; Yokouchi, Y.; Li, S.; Kim, .J, Kim, K.; Park, S.; Graziosi, F.; Stohl, A.

GEIA's vision for improved emissions information. NILU F

Frost, G.J.; Granier, C.; Middleton, P.; Tarrasón, L.