Clement et al. (Reports, 24 July 2009, p. 460) provided observational evidence for systematic relationships between variations in marine low cloudiness and other climatic variables and found that most current-generation climate models were deficient in reproducing such relationships. Our analysis of one of these models (GFDL CM2.1), using more complete model output, indicates better agreement w...

However, its commercial success as a biofuel plant is still elusive. Major bottlenecks for the same are significant variations in seed yield and oil content, low seed viability and germination rate. For vegetative propagation to be successful, it would require availability of quality planting material throughout the year. However, this is limited by unavailability of quality planting material a...

The heterogeneous ecosystems in the Mediterranean Basin (MB) are becoming sensitive to water stress. To investigate climatic stress, a budget study was conducted over basin using TerraClimate simulations for long temporal range (1990–2020). According accounting, forested regions received highest precipitation (P) on average compared other land use types (annual mean ≈633 mm yr−1), and even then...

1 ALLNUTT, J.E., and HAIDARA, F.: 'Ku-band diurnal rain fade statistics from three, two-year, earth-space experiments in equatorial Africa'. Proc. URSI Commission F Open Symp. Climatic Parameters in Radiowave Propagation Prediction, Ottawa, Canada, 27-29 April 1998, pp. 159-162 2 ALLNUTT, J.E., and HAIDARA, F.: 'Ku-band fade duration data from three, two-year, earth-space experiments in equator...

In this paper an attempt is made to investigate the possible temporal correlation between heavy precipitation episodes and cosmic rays’ activity, on various time scales. Cosmic rays measurements are sparse and cover less extended periods than those of precipitation. Precipitation is largely influenced by local climatic and even physiographic conditions, while cosmic rays’ distribution is far mo...

There exist five primary periods of 2 930, 1 140, 490, 250 and 220 a in the Holocene climatic variations in the Huguangyan Maar Lake, according to the energy-spectrum and filter analyses of high-resolution time sequences (10 15 a) of the sediment dry density. The peak values of the three temperature-decreasing periods with the 2 930 a cycle occur at about 7 300, 4 250 and 1 200 Cal. aBP. There ...