6,072 research outputs found

    Time dependent correlations in marine stratocumulus cloud base height records

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    The scaling ranges of time correlations in the cloud base height records of marine boundary layer stratocumulus are studied applying the Detrended Fluctuation Analysis statistical method. We have found that time dependent variations in the evolution of the α\alpha exponent reflect the diurnal dynamics of cloud base height fluctuations in the marine boundary layer. In general, a more stable structure of the boundary layer corresponds to a lower value of the α\alpha - indicator, i.e. larger anti-persistence, thus a set of fluctuations tending to induce a greater stability of the stratocumulus. In contrast, during periods of higher instability in the marine boundary, less anti-persistent (more persistent like) behavior of the system drags it out of equilibrium, corresponding to larger α\alpha values. From an analysis of the frequency spectrum, the stratocumulus base height evolution is found to be a non-stationary process with stationary increments. The occurrence of these statistics in cloud base height fluctuations suggests the usefulness of similar studies for the radiation transfer dynamics modeling.Comment: 12 pages, 6 figures; to appear in Int. J. Mod. Phys. C, Vol. 13, No. 2 (2002

    Biologic activity in a fragment of recombinant human interferon α

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    To attempt to locate functionally important regions of the interferon (IFN) molecule, recombinant human IFN-α2 was subjected to proteolytic digestion. The bacterial proteinase thermolysin produced two major complementary fragments, HuIFN-α2-(1-110) and HuIFN-α2-(111-153). After reduction with 2-mercaptoethanol and separation of the two major fragments on NaDodSO4/polyacrylamide gel electrophoresis, antiviral activity persisted in the larger, Mr 12,000, fragment consisting of the amino-terminal 110 amino acids

    What World of Warcraft is Teaching Us About Learning.

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    Ph.D. Thesis. University of Hawaiʻi at Mānoa 2017

    Radiative energy budget estimates for the 1979 Southwest Summer Monsoon

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    November, 1986.Includes bibliographical references

    GATE phase III mean synoptic-scale radiative convergence profiles

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    March, 1980.Includes bibliographical references.Sponsored by the Global Atmospheric Research Program, National Science Foundation and the GARP Atlantic Tropical Experiment (GATE) Project Office, NOAA ATM 78-05743.Sponsored by the Global Atmospheric Research Program, National Science Foundation and the GARP Atlantic Tropical Experiment (GATE) Project Office, NOAA ATM 78-12631

    Comparison of NOAA-9 ERBE measurements with Cirrus IFO satellite and aircraft measurements

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    Earth Radiation Budget Experiment (ERBE) measurements onboard the NOAA-9 are compared for consistency with satellite and aircraft measurements made during the Cirrus Intensive Field Observation (IFO) of October 1986. ERBE scene identification is compared with NOAA-9 TIROS Operational Vertical Sounder (TOVS) cloud retrievals; results from the ERBE spectral inversion algorithms are compared with High resolution Interferometer Sounder (HIS) measurements; and ERBE radiant existance measurements are compared with aircraft radiative flux measurements
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