1861-06-10 S.B. Morrison recommends Dr. McRuer for Brigade Surgeon

https://digitalmaine.com/cw_me_2nd_regiment_corr/1050/thumbnail.jp

1861-06-14 S.B. Morison writes to Governor Washburn again recommending Dr.Daniel McRuer for Brigade Surgeon

https://digitalmaine.com/cw_me_2nd_regiment_corr/1054/thumbnail.jp

1863-02-14 S.B. Morison requests an assistant surgeon for the regiment

https://digitalmaine.com/cw_me_2nd_regiment_corr/1489/thumbnail.jp

1862-08-26 Dr. Morison writes Governor Washburn regarding surgeon appointments

https://digitalmaine.com/cw_me_2nd_regiment_corr/1463/thumbnail.jp

1862-08-12 S.B. Morison writes to Governor Washburn regarding surgeon positions

https://digitalmaine.com/cw_me_2nd_regiment_corr/1450/thumbnail.jp

1863-04-10 S.B. Morison writes of his illness to General Hodsdon

https://digitalmaine.com/cw_me_2nd_regiment_corr/1384/thumbnail.jp

1863-06-04 Dr. S.B. Morison recommends Dr. W.R. Benson for appointment as surgeon

https://digitalmaine.com/cw_me_2nd_regiment_corr/1443/thumbnail.jp

Effects of urban density on carbon dioxide exchanges: observations of dense urban, suburban and woodland areas of southern England

Anthropogenic and biogenic controls on the surface–atmosphere exchange of CO2 are explored for three different environments. Similarities are seen between suburban and woodland sites during summer, when photosynthesis and respiration determine the diurnal pattern of the CO2 flux. In winter, emissions from human activities dominate urban and suburban fluxes; building emissions increase during cold weather, while traffic is a major component of CO2 emissions all year round. Observed CO2 fluxes reflect diurnal traffic patterns (busy throughout the day (urban); rush-hour peaks (suburban)) and vary between working days and non-working days, except at the woodland site. Suburban vegetation offsets some anthropogenic emissions, but 24-h CO2 fluxes are usually positive even during summer. Observations are compared to estimated emissions from simple models and inventories. Annual CO2 exchanges are significantly different between sites, demonstrating the impacts of increasing urban density (and decreasing vegetation fraction) on the CO2 flux to the atmosphere

Profiling Sea Ice with a Multiple Altimeter Beam Experimental Lidar (MABEL)

The sole instrument on the upcoming ICESat-2 altimetry mission is a micropulse lidar that measures the time-of-flight of individual photons from laser pulses transmitted at 532 nm. Prior to launch, MABEL serves as an airborne implementation for testing and development. In this paper, we provide a first examination of MABEL data acquired on two flights over sea ice in April 2012: one north of the Arctic coast of Greenland, and the other in the East Greenland Sea.We investigate the phenomenology of photon distributions in the sea ice returns. An approach to locate the surface and estimate its elevation in the distributions is described, and its achievable precision assessed. Retrieved surface elevations over relatively flat leads in the ice cover suggest that precisions of several centimeters are attainable. Restricting the width of the elevation window used in the surface analysis can mitigate potential biases in the elevation estimates due to subsurface returns at 532 nm. Comparisons of nearly coincident elevation profiles from MABEL with those acquired by an analog lidar show good agreement.Discrimination of ice and open water, a crucial step in the determination of sea ice free board and the estimation of ice thickness, is facilitated by contrasts in the observed signal background photon statistics. Future flight lines will sample a broader range of seasonal ice conditions for further evaluation of the year-round profiling capabilities and limitations of the MABEL instrument