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  • 1
    Monograph available for loan
    Monograph available for loan
    São José dos Campos : Inst. de Pesquisas Espaciais
    Associated volumes
    Call number: MOP 22595/V
    In: INPE
    Type of Medium: Monograph available for loan
    Series Statement: INPE / Instituto Nacional de Pesquisas Espaciais 1926 : RPE 252
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 2
    Monograph available for loan
    Monograph available for loan
    São José dos Campos : Inst. de Pesquisas Espaciais
    Associated volumes
    Call number: MOP 22595/H
    In: INPE
    Type of Medium: Monograph available for loan
    Series Statement: INPE / Instituto Nacional de Pesquisas Espaciais 1303 : PE 147
    Location: MOP - must be ordered
    Branch Library: GFZ Library
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 97 (1972), S. 183-213 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Studies of various radiation fluxes, namely solar radiation, albedo (reflection coefficient), long-wave radiation of the earth and the atmosphere and net radiation observed at a tropical station are presented in this paper. The time variation of these fluxes are examined in relation to various meteorological parameters and atmospheric conditions. The constants of the general radiation balance equation are determined. The calculated radiation balance equation with new constants for the station isR=0.86 (1−α)S−4.2. A high correlation coefficient 0.99 is obtained between net short-wave radiation (1−α)S and net radiationR. The radiation balance at a tropical station is evaluated. It is found over a year there is a net surplus of 94 kilo-langleys.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1420-9136
    Keywords: Precipitable water ; Brazil
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract A preliminary study of precipitable water over Brazil is attempted. Mean values for January are presented in this paper. A regression equation connecting the surface dew-point temperature and the precipitable water was computed along the lines of studies made by Reitan (1963), and the results are presented.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The mean monthly precipitable water at four tropical stations Madras (13°00′N, 80°11′E), Waltair (17°42′N, 83°18′E), Bombay (18°54′N, 72°49′E) and Nagpur (21°06′N, 79°03′E) are evaluated for the layer surface to 500 mb (0–5.4 km) of the atmosphere using radiosonde data available for seven years period (1959–1965). The mean monthly precipitable water for the above four stations is also estimated from dew point temperature. The precipitable water in the air column at any station is examined in relation to monsoon flow. The higher values of precipitable water are found to occur over the regions when there is good supply of moisture by the monsoon flow as well as low level convergence. These studies are believed to provide useful information in forecasting the monsoon circulation over the country.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 68 (1967), S. 214-228 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary The present paper contains studies of the nocturnal radiation at some Indian Stations (Madras, Waltair, Nagpur, New Delhi and Poona) with the help of the Ångström compensation Pyrgeometer. The technique of measurement is also described briefly. A study of the mean monthly variation of sky radiation during clear as well as all nights has been discussed. A comparitive study of mean monthly values of sky and other nocturnal radiation components at these stations is also presented. Ångström, [4]2) expressed the dependence of sky radiationS—on water vapour pressuree (mm of mercury) at the earth's surface and air temperatureT (degrees absolute), near the instrument to be given byS=σT 4 (0.75–0.32×10−0.069e ) cal/cm2/min. According to this semi-empirical relationship, the calculated values of sky radiation for clear nights are smaller than the observed values of sky radiation at all the above stations. It is for this reason the authors obtained a new formula with different constants using nine years observed data at all the stations. To investigate the value of the constant, the mean annual observations presented for nine years from clear skies were analysed for correlations betweenB (black body radiation) versesS (sky radiation),N (net radiation) andE (absolute error) and obtained a good correlation co-efficients 0.90, 1 and 0.98 respectively. The new suggested formula isS=σT 4 (0.88–0.32×10−0.069e ) cal/cm2/min, 267° A〈T〈313° A. It is also verified using with observed data of different years of the stations. The agreement between the computed values with the new formula of sky radiation and observed sky radiation is found to be good.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 81 (1970), S. 279-312 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Studies of various fluxes, namely net radiation, soil heat, sensible heat and latent heat observed at a tropical station are presented in this paper. The time variation of these fluxes are examined in relation to various meteorological parameters and atmospheric conditions. The turbulent transfer coefficients have been evaluated to examine the applicability of the classical theory or the non-equivalence theory for eddy transport in the lower layers of the atmosphere. The energy balance at a tropical station is evaluated. It is found over year there is a net surplus of 94,000 ly. A detailed discussion of the disposal of this energy by various consuming processes is given.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 81 (1970), S. 272-278 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Utilising two years data collected at two tropical coastal stations, Madras (13°04′N, 80°15′E) and Waltair (17°42′N, 83°18′E) and for one tropical continental station, Nagpur (21°09′N, 79°07′E), the authors have re-evaluated the constants ofBrunt's regression equation. Analyses of the observations for Waltair and Nagpur show good correlation coefficients (r) between the values of the effective emissivity of the atmosphere (the effective emissivity is the ratio of incoming long-wave sky radiation at the surfaceR s , to black body radiation σT 4) and the square root values of surface vapour pressuree (mb). The value ofr for Waltair from radiometer observations is 0.98. It is also determined for Waltair and Nagpur from Ångström compensation pyrgeometer observations as 0.83 and 0.91 respectively. A low correlation co-efficient 0.56 is obtained for Madras. It might be due to higher surface vapour pressure values at Madras than at Waltair and Nagpur. The applicability of the reduced regression equations are examined for different years for the different stations. The agreement between the computed values with the new regression equations and the observed long-wave sky radiation at the surface seems to be quite good.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 75 (1969), S. 365-374 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Summary Two methods of the evaluation of sensible heat flux are briefly presented from the view point of their application to micrometeorology. The comparison of sensible fluxes for coastal and inland stations is presented, in order to explain the influence of the marine atmosphere on these fluxes. They reach a maximum value in summer at the coastal stations, due to maximum wind speed and high convective activity developed by the influence of the marine atmosphere.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Pure and applied geophysics 86 (1971), S. 140-141 
    ISSN: 1420-9136
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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