GYN/ECOLOGY: FOR STUDENTS AND MEDICAL PRACTITIONERS. Revised and Rewritten oy ? ? n IUI r? C D C D ? S J. M. Munro Kepp, LL.D., M.D., F.R.F.P. &S. (Glas.), F.R.C.O.G., R. W. Johnstone, C.B.E., M.A., M.D., M.R.C.P., F.R.C.S. (Edin.), F.R.C.O.G., James Hendpy, M.B.E.. M.A., B.Sc., M.B., F.R.F.P. & S. (Glas.), F.R.C.O.G., D. Balpd, B.Sc., M.D. (Glas.), D.P.H. (Edin.), F.R.C.O.G., J. Young, D.S.O.,...

Laser beams emitted from the Geoscience Laser Altimeter System (GLAS), as well as other spaceborne laser instruments, can only penetrate clouds to a limit of a few optical depths. As a result, only optical depths of thinner clouds ( about 3 for GLAS) are retrieved from the reflected lidar signal. This paper presents a comprehensive study of possible retrievals of optical depth of thick clouds u...

The evolution of lidar, from those early ground-based measurements to our first long-duration spaceborne experiments, is schematically represented in Fig. 13.1. It depicts the first lidars in the 1960s as ground-based, followed by systems first flown in 1969 on small aircraft, and followed in the late 1970s by lidars flown on large aircraft capable of long-range measurements. Starting in 1979, ...

This study develops a modeling framework for utilizing the large footprint LiDAR waveform data from the Geoscience Laser Altimeter System (GLAS) onboard NASA’s Ice, Cloud, and Land Elevation Satellite (ICESat), Moderate Resolution Imaging Spectro-Radiometer (MODIS) imagery, meteorological data, and forest measurements for monitoring stocks of total biomass (including aboveground biomass and roo...

6 [1] The primary goal of the Ice, Cloud and land Elevation 7 Satellite (ICESat) mission is ice sheet elevation change 8 detection. Confirmation that ICESat is achieving its stated 9 scientific requirement of detecting spatially-averaged 10 changes as small as 1.5 cm/year requires continual 11 assessment of ICESat-derived elevations throughout the 12 mission. We use a GPS-derived digital elevat...

With the conclusion of the science phase of the Ice, Cloud and land Elevation Satellite (ICESat) mission in late 2009, and the planned launch of ICESat-2 in late 2015, NASA has recently established the IceBridge program to provide continuity between missions. A major goal of IceBridge is to obtain a sea-ice thickness time series via airborne surveys over the Arctic and Southern Oceans. Typicall...