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Full-Text Articles in Social and Behavioral Sciences
Estimated Total Emissions Of Trace Gases From The Canberra Wildfires Of 2003: A New Method Using Satellite Measurements Of Aerosol Optical Depth & The Mozart Chemical Transport Model, Clare Paton-Walsh, L Emmons, Stephen R. Wilson
Estimated Total Emissions Of Trace Gases From The Canberra Wildfires Of 2003: A New Method Using Satellite Measurements Of Aerosol Optical Depth & The Mozart Chemical Transport Model, Clare Paton-Walsh, L Emmons, Stephen R. Wilson
Faculty of Science - Papers (Archive)
In this paper we describe a new method for estimating trace gas emissions from large vegetation fires using satellite measurements of aerosol optical depth (AOD) at 550 nm, combined with an atmospheric chemical transport model. The method uses a threshold value to screen out normal levels of AOD that may be caused by raised dust, sea salt aerosols or diffuse smoke transported from distant fires. Using this method we infer an estimated total emission of 15±5 Tg of carbon monoxide, 0.05±0.02 Tg of hydrogen cyanide, 0.11±0.03 Tg of ammonia, 0.25±0.07 Tg of formaldehyde, 0.03±0.01 of acetylene, 0.10±0.03 Tg of ethylene, …
Validation Of Five Years (2003-2007) Of Sciamachy Co Total Column Measurements Using Ground-Based Spectrometer Observations, A T. J De Laat, A M. S Gloudemans, H Schrijver, I Aben, Y Nagahama, K Suzuki, E Mahieu, N B. Jones, Clare Paton-Walsh, N M. Deutscher, D W. T Griffith, M De Maziere, R L. Mittermeier, H Fast, J Notholt, M Palm, T Hawat, T Blumenstock, F Hase, M Schneider, C Rinsland, A V. Dzhola, E I. Grechko, A M. Poberovskii, M V. Makarova, J Mellqvist, A Strandberg, R Sussmann, T Borsdorff, M Rettinger
Validation Of Five Years (2003-2007) Of Sciamachy Co Total Column Measurements Using Ground-Based Spectrometer Observations, A T. J De Laat, A M. S Gloudemans, H Schrijver, I Aben, Y Nagahama, K Suzuki, E Mahieu, N B. Jones, Clare Paton-Walsh, N M. Deutscher, D W. T Griffith, M De Maziere, R L. Mittermeier, H Fast, J Notholt, M Palm, T Hawat, T Blumenstock, F Hase, M Schneider, C Rinsland, A V. Dzhola, E I. Grechko, A M. Poberovskii, M V. Makarova, J Mellqvist, A Strandberg, R Sussmann, T Borsdorff, M Rettinger
Faculty of Science - Papers (Archive)
Abstract. This paper presents a validation study of SCanning Imaging Absorption spectroMeter for Atmospheric CHartographY (SCIAMACHY) carbon monoxide (CO) total column measurements from the Iterative Maximum Likelihood Method (IMLM) algorithm using ground-based spectrometer observations from twenty surface stations for the five year time period of 2003–2007. Overall we find a good agreement between SCIAMACHY and ground-based observations for both mean values as well as seasonal variations. For high-latitude Northern Hemisphere stations absolute differences between SCIAMACHY and ground-based measurements are close to or fall within the SCIAMACHY CO 2 precision of 0.2×1018 molecules/cm2 (10%) indicating that SCIAMACHY can observe CO accurately …
Increased Northern Hemispheric Carbon Monoxide Burden In The Troposphere In 2002 And 2003 Detected From The Ground And From Space, L N. Yurganov, P Duchatelet, A V. Dzhola, D P. Edwards, F Hase, I Kramer, E Mahieu, J Mellqvist, J Notholt, P C. Novelli, A Rockmann, H E. Scheel, M Schneider, A Schulz, A Strandberg, R Sussmann, H Tanimoto, Voltaire A. Velazco, J Drummond, J Gille
Increased Northern Hemispheric Carbon Monoxide Burden In The Troposphere In 2002 And 2003 Detected From The Ground And From Space, L N. Yurganov, P Duchatelet, A V. Dzhola, D P. Edwards, F Hase, I Kramer, E Mahieu, J Mellqvist, J Notholt, P C. Novelli, A Rockmann, H E. Scheel, M Schneider, A Schulz, A Strandberg, R Sussmann, H Tanimoto, Voltaire A. Velazco, J Drummond, J Gille
Faculty of Science - Papers (Archive)
Carbon monoxide total column amounts in the atmosphere have been measured in the High Northern Hemisphere (30°- 90° N, HNH) between January 2002 and December 2003 using infrared spectrometers of high and moderate resolution and the Sun as a light source. They were compared to ground-level CO mixing ratios and to total column amounts measured from space by the Terra/MOPITT instrument. All these data reveal increased CO abundances in 2002-2003 in comparison to the unperturbed 2000-2001 period. Maximum anomalies were observed in September 2002 and August 2003. Using a simple two-box model, the corresponding annual CO emission anomalies (referenced to …
Tropical Cyclone Disturbance Of Coral Communities Of The Great Barrier Reef, 1969-2003, Marjetta L. Puotinen
Tropical Cyclone Disturbance Of Coral Communities Of The Great Barrier Reef, 1969-2003, Marjetta L. Puotinen
Faculty of Science - Papers (Archive)
The primary building block of coral reef ecosystems, whether an isolated mid-ocean atoll or a complex system of thousands of reefs, are the individual coral colonies that combine to form the reef structures which host coral communities. The state of a coral reef community (i.e. percentage coral coverage, dominant growth forms and size classes), or any other ecosystem, at any given time is the result of interactions between a range of disturbances and routine ecological processes that operate across a continuum of spatial and temporal scales (Gunderson et al 2002). The biological (living coral colonies) and structural (dead coral framework …