RESUMEN
The Northern Hemisphere experienced dramatic changes during the last glacial, featuring vast ice sheets and abrupt climate events, while high northern latitudes during the last interglacial (Eemian) were warmer than today. Here we use high-resolution aerosol records from the Greenland NEEM ice core to reconstruct the environmental alterations in aerosol source regions accompanying these changes. Separating source and transport effects, we find strongly reduced terrestrial biogenic emissions during glacial times reflecting net loss of vegetated area in North America. Rapid climate changes during the glacial have little effect on terrestrial biogenic aerosol emissions. A strong increase in terrestrial dust emissions during the coldest intervals indicates higher aridity and dust storm activity in East Asian deserts. Glacial sea salt aerosol emissions in the North Atlantic region increase only moderately (50%), likely due to sea ice expansion. Lower aerosol concentrations in Eemian ice compared to the Holocene are mainly due to shortened atmospheric residence time, while emissions changed little.
RESUMEN
A 11 year old female spayed Jack Russel Terrier was diagnosed with diabetes mellitus and ketoacidosis. After successful initial treatment metabolic control deteriorated although insulin dosage was increased. Cushing's syndrome was diagnosed and treatment with Lysodren was started. As a result blood glucose concentrations decreased. The difficulty to diagnose Cushing's syndrome in some diabetic dogs is discussed.
