Encontrados 10 documentos, a visualizar página 1 de 1
Late summer changes in burning conditions in the boreal regions and their impli...
Lapina, K.; Honrath, Richard; Owen, R. Chris; Val Martin, Maria; Hyer, E. J.; Fialho, PauloCopyright © 2008 American Geophysical Union. All Rights Reserved. ; Building emission inventories for the fires in boreal regions remains a challenging task with significant uncertainties in the methods used. In this work, we assess the impact of seasonal trends in fuel consumption and flaming/smoldering ratios on emissions of species dominated by flaming combustion (e.g., NO x ) and species dominated by smold...
Photochemical evolution of continental outflow to Pico Mountain (Azores): Integ...
Honrath, Richard; Owen, Robert; Li, Q. B.; Helmig, Detlev; Fialho, PauloWorkshop on Integrated Observations for Assessing Hemispheric Transport. Geneva, Switzerland, 24-26 January 2007. ; An analysis of the consistency of lower-FT observations with chemical transport model (CTM) simulations in aged U.S. export.
Significant enhancements of nitrogen oxides, black carbon, and ozone in the Nor...
Val Martin, Maria; Honrath, Richard; Owen, R. Chris; Pfister, G.; Fialho, Paulo; Barata, FilipeCopyright © 2006 American Geophysical Union. All Rights Reserved. ; Extensive wildfires burned in northern North America during summer 2004, releasing large amounts of trace gases and aerosols into the atmosphere. Emissions from these wildfires frequently impacted the PICO-NARE station, a mountaintop site situated 6–15 days downwind from the fires in the Azores Islands. To assess the impacts of the boreal wild...
North American Boreal Wildfire and Anthropogenic Emissin Impacts in the Lower F...
Fialho, Paulo; Val Martin, Maria; Honrath, Richard; Owen, Robert; Pfister, G.; Lapina, K.; Barata, FilipeAGU Fall Meeting. San Francisco, California, 11-15 December 2006. ; We present analyses of CO, O3, nitrogen oxides (NOx and NOy) and aerosol black carbon (BC) measurements made in the lower free troposphere (FT) over the North Atlantic region during summers 2004 (ICARTT period) and 2005.
A permanent free tropospheric observatory at Pico summit in the Azores Islands?...
Honrath, Richard; Fialho, Paulo; Helmig, Detlev; Val Martin, Maria; Owen, Robert; Kleissl, J.; Strane, J. M.; Dziobak, Michael P.; Tanner, D. M.AGU Fall Meeting. San Francisco, California, 5-9 December 2005. ; Pico mountain in the Azores Islands provides a base for continuous, free tropospheric measurements that is unique in the central North Atlantic region. The PICO-NARE station was installed there in 2001 as a temporary observatory. However, the location proved ideal for studies of aged emissions from anthropogenic (N. American) and boreal fire (N....
Large-scale impacts of anthropogenic and boreal fire emissions apparent in mult...
Honrath, Richard; Val Martin, Maria; Kleissl, J.; Owen, Robert; Lapina, K.; Fialho, Paulo; Helmig, Detlev; Tanner, D. M.Gordon conference - Atmospheric Chemistry. Big Sky, Montana, September 4-9 2005. ; Pico Mountain in the Azores Islands provides an ideal location for studies of the central N. Atlantic lower free troposphere. The PICO-NARE station has operated there since summer 2001. Here, we present key findings from summertime measurements, during 2001-2004. Main Findings: Anthropogenic and boreal wildfire emissions dominat...
Impacts of anthropogenic and boreal fire emissions in the central North Atlanti...
Val Martin, Maria; Honrath, Richard; Kleissl, J.; Owen, Robert; Lapina, K.; Fialho, Paulo; Helmig, Detlev; Tanner, D. M.ICARTT 2004 Data Workshop. Durham, New Hampshire, August 9-12, 2005. ; We present measurements of CO, O3, aerosol Black Carbon (BC) made over the central North Atlantic lower Free Troposphere (FT) during the summers of 2001-2004 along with measurements of nitrogen oxides (NOx and NOy) made during the summer of 2004 (ICARTT period) and non-methane hydrocarbons (NMHCs) made during the winter 2004-spring 2005.
Identification of black carbon and dust aerosol events at the Azores PICO-NARE ...
Fialho, Paulo; Barata, Filipe; Honrath, Richard; Hansen, AnthonyEuropean Geosciences Union (EGU), General Assembly. Viena, Austria, 24-29 April 2005. ; During the International Consortium for Atmospheric Research on Transport and Transformation (ICARTT) experiment (July – August 2004), aerosol samples were taken and their aerosol absorption coefficients measured. At the same time the levels of carbon monoxide and ozone where also monitored. These measurements were taken at...
Regional and hemispheric impacts of anthropogenic and biomass burning emissions...
Honrath, Richard; Owen, R. Chris; Val Martin, Maria; Reid, J. S.; Lapina, K.; Fialho, Paulo; Dziobak, Michael P.; Kleissl, J.; Westphal, D. L.Copyright © 2004 American Geophysical Union. All Rights Reserved. ; We report summertime measurements of CO and O3 obtained during 2001–2003 at the PICO-NARE mountaintop station in the Azores. Frequent events of elevated CO mixing ratios were observed. On the basis of backward trajectories arriving in the free troposphere and global simulations of biomass burning plumes, we attribute nearly all these events to...
The Azores Islands: A Unique Location for Ground-Based Measurements in the MBL ...
Honrath, Richard; Fialho, PauloThe Azores Islands - the only islands in the central North Atlantic that are distant from all surrounding continentes - have historically been important for studies of the North Atlantic atmosphere. Prior to the advent of satellite observations, they provided weather data critical to the accuracy of forecasts of European weather. Today, they provide a unique base for observations of the impacts on atmospheric c...
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