Derek M. Burrage

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BACKGROUND Psoriasis has a serious impact on patients' lives. However, adherence to medications is often poor, potentially compounding the burden of disease. Identifying patients who need support with psychosocial problems, or issues with adherence, can be complex. OBJECTIVES We aimed to develop statements that could assist the consultation process,(More)
The Global Navigation Satellite System (GNSS) signals are always available, globally, and the signal structures are well known, except for those dedicated to military use. They also have some distinctive characteristics, including the use of L-band frequencies, which are particularly suited for remote sensing purposes. The idea of using GNSS signals for(More)
We report here on aircraft measurements made in May, 2007, with the NRL STARRS (Salinity, Temperature and Roughness Remote Scanner), and optical multi-wavelength radiance and irradiance sensors (Satlantic OCR-507 at SEAWIFS wavelength bands). These measurements were made in conjunction with in situ measurements of sea surface salinity (SSS), ocean color,(More)
Measuring the sea surface during tropical cyclones (TC) is challenging due to severe weather conditions that prevent shipboard measurements and clouds which mask the sea surface for visible satellite sensors. However, sea surface emission in the microwave L-band can penetrate rain and clouds and be measured from space. The European Space Agency (ESA) MIRAS(More)
Airborne and satellite retrieval of Sea Surface Salinity (SSS) using L-band micronave radiometers requires accurate corrections for the influence of wind-induced Sea Surface Roughness (SSR) on the retrievals. We describe an airborne experiment, Virgo II, that combined an L-band micronave radiometer for retrieving SSS, with Land S-band reflectometer systems(More)
The launch of the European Space Agency’s Soil Moisture and Ocean Salinity, SMOS, L-band microwave satellite [5] in November 2009, and the imminent launch of NASA’s Aquarius satellite [13] in 2010, will allow global Sea Surface Salinity (SSS) to be mapped monthly over deep oceans with 0.2 psu precision at 100 km resolution. However, the accuracy of(More)
The authors have developed a simulation system for a passive microwave radiometer using MATLAB and SIMULINK from The MathWorks, Inc. The system comprises a high-level block diagram simulation for a modern instrument, the Scanning Low Frequency Microwave Radiometer, or SLFMR. The hardware prototype SLFMR, which was designed to map sea surface salinity, was(More)
New microwave salinity measuring satellites (SMOS, launched Nov, 2009 and AQUARIUS, to be launched spring 2010) have relatively large pixel size (35-80 km). This does affect their primary ocean missionglobal open ocean salinity measurements on a monthly time scale, to a limited extent. However, the large pixel size has a dramatic effect on measurements near(More)