Regression analyses of QuikSCAT’s wind retrievals against buoy wind measurements, obtained from National Data Buoy Center (NDBC) buoys, selleckchem are Inhibitors,Modulators,Libraries performed. In this Inhibitors,Modulators,Libraries study we present results of a long-term (time period from January 2005 through February 2007) and hurricane analysis. www.selleckchem.com/products/17-DMAG,Hydrochloride-Salt.html We also compared QuikSCAT’s wind retrievals against buoy wind data for three buoys located in the Pacific Ocean to compare their performance with those located in the GoM. Previous studies on hurricane-based performance evaluation Inhibitors,Modulators,Libraries of QuikSCAT have mainly concentrated on comparisons with model outputs or other satellite measurements (e.g., Cione and Uhlhorn 2003; Chelton et al. 2004; Emanuel 2005; Chelton et al. 2004).

Here, wind measurements Inhibitors,Modulators,Libraries acquired from QuikSCAT and buoys during hurricanes that came into the GoM during the Inhibitors,Modulators,Libraries period 2002-06 were studied.

2.?Data and MethodsQuikSCAT wind products are available (http://podaac-www.jpl.nasa.gov/) at three levels, namely Level 1B, Level 2A & 2B and Inhibitors,Modulators,Libraries Level 3. Level 1B has the time-ordered Ea
It is known that atmospheric aerosols influence the Earth climate system. Various Inhibitors,Modulators,Libraries efforts are being made to investigate the global distribution and concentration of these aerosols and to quantify their forcing on the radiation budget. Numerous data from passive optical Earth observation satellites are used to map aerosol properties on a global scale. Not only atmospheric scientists, but also the remote sensing community relies on aerosol information.

Earth observation data in particular have to be corrected for the atmospheric influence in order to provide accurate physical measuring quantities.

During the last two decades, several aerosol retrieval techniques have been developed for satellite instruments. GSK-3 An overview is given by [1] and recent inter-comparisons are provided for the retrieval over land by [2] and over sea by [3], [4] and [5]. In general, relatively large discrepancies between different satellite instruments were found, especially on the scale of single Inhibitors,Modulators,Libraries pixels Dacomitinib [2]. Even long-term studies over the ocean reveal differences between well established satellite instruments of up to 0.1 aerosol optical depth (AOD or �Ӧ�aer) and 0.45 ?ngstr?m exponent [4].

State-of-the-art hyperspectral airborne imagers may be able to outperform the limitations of most current satellite instruments.

For example, the typical ground sampling distance (GSD) of they spaceborne instruments retrieving AOD routinely is in the range of 1km to 30km. The resulting uncertainty of the surface reflectance Vismodegib is an important contribution to the inaccuracy of the retrieved AOD over land. On the other hand, the GSD of airborne instruments is in the range of meters. One can therefore assume better performances in AOD retrieval over land because the unmixing of the surface and the atmospheric signal is expected to be less difficult.