Abstract

Near infrared solar spectrum observations taken on October 15, 1954 with a double-pass Nacl prism spectrometer have been analyzed for transmission coefficients for the "selective" absorption factor and for the "continuum" factor. The analysis was carried out for 59 wavelength positions between 0.872 and 2.537µ. The monochromatic data fit well the law °<i>nT</i> =<i>c</i><sub>1</sub>(<i>w</i>)<sup>½</sup> where w is the amount of water vapor in the optical path. The coefficient c<sub>1</sub> is given as a continuous function of the wavelength. A coefficient of extinction for the "continuum" factor is also given.

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  1. S. P. Langley, Ann. Smithsonian Inst. 1, 1 (1900).
  2. F. E. Fowle, Astrophys. J. 35, 149 (1912); 37, 359 (1913); 42, 394 (1915).
  3. A. Adel, Astrophys. J. 90, 627 (1939); 93, 506 (1941); 96, 239 (942).
  4. O. C. Mohler, A. K. Pierce, R. R. McMath, and L. Goldberg, Photometric Atlas of the Near Infrared Solar Spectrum λ8465 to λ25 242 A (University of Michigan Press, Ann Arbor, Michigan, 1950).
  5. O. C. Mohler, A Table of Solar Spectrum Wavelengths (University of Michigan Press, Ann Arbor, Michigan, 1955).
  6. J. H. Shaw, R. M. Chapman, J. N.Howard, and M. L. Oxholm, Astrophys. J. 113, 268 (1951).
  7. M. Migeotte, L. Neven, and J. Sevenson, Mém. soc. roy. sci. Liége, Special Volume No. 1 (1956), Part I; Special Volume No. 2 (1957), Part II.
  8. J. N. Howard, D. E. Burch, and D. Williams, J. Opt. Soc. Am. 46, 186, 237, 242, 334 (1956).
  9. R. P. Madden, Ph.D. Dissertation, Johns Hopkins University, 1957.
  10. W. H. Cloud, Ph.D. Dissertation, Johns Hopkins University, 1952.
  11. H. J. Kostkowski, Ph.D. Dissertation, Johns Hopkins University, 1955.
  12. A. Bernporad, Met. Z. 24, 309 (1907).
  13. R. Peyturaux, Ann. Astrophys. 15, 302 (1952).
  14. R. M. Goody, Quart. J. Roy. Met. Soc. 78. 165 (1952).
  15. This assumes a constant distribution of the water vapor in the atmosphere although the total amount will vary.
  16. W. M. Elsasser, Harvard Meteorological Studies, No.6 (1942).
  17. D. M. Gates, J. Meteorol. 13, 369 (1956).
  18. From a knowledge of the distribution of the water vapor in the atmosphere one can apply the appropriate pressure correction to α.

Adel, A.

A. Adel, Astrophys. J. 90, 627 (1939); 93, 506 (1941); 96, 239 (942).

Bernporad, A.

A. Bernporad, Met. Z. 24, 309 (1907).

Burch, D. E.

J. N. Howard, D. E. Burch, and D. Williams, J. Opt. Soc. Am. 46, 186, 237, 242, 334 (1956).

Chapman, R. M.

J. H. Shaw, R. M. Chapman, J. N.Howard, and M. L. Oxholm, Astrophys. J. 113, 268 (1951).

Cloud, W. H.

W. H. Cloud, Ph.D. Dissertation, Johns Hopkins University, 1952.

Elsasser, W. M.

W. M. Elsasser, Harvard Meteorological Studies, No.6 (1942).

Fowle, F. E.

F. E. Fowle, Astrophys. J. 35, 149 (1912); 37, 359 (1913); 42, 394 (1915).

Gates, D. M.

D. M. Gates, J. Meteorol. 13, 369 (1956).

Goldberg, L.

O. C. Mohler, A. K. Pierce, R. R. McMath, and L. Goldberg, Photometric Atlas of the Near Infrared Solar Spectrum λ8465 to λ25 242 A (University of Michigan Press, Ann Arbor, Michigan, 1950).

Goody, R. M.

R. M. Goody, Quart. J. Roy. Met. Soc. 78. 165 (1952).

Howard, J. N

J. H. Shaw, R. M. Chapman, J. N.Howard, and M. L. Oxholm, Astrophys. J. 113, 268 (1951).

Howard, J. N.

J. N. Howard, D. E. Burch, and D. Williams, J. Opt. Soc. Am. 46, 186, 237, 242, 334 (1956).

Kostkowski, H. J.

H. J. Kostkowski, Ph.D. Dissertation, Johns Hopkins University, 1955.

Langley, S. P.

S. P. Langley, Ann. Smithsonian Inst. 1, 1 (1900).

Madden, R. P.

R. P. Madden, Ph.D. Dissertation, Johns Hopkins University, 1957.

McMath, R. R.

O. C. Mohler, A. K. Pierce, R. R. McMath, and L. Goldberg, Photometric Atlas of the Near Infrared Solar Spectrum λ8465 to λ25 242 A (University of Michigan Press, Ann Arbor, Michigan, 1950).

Migeotte, M.

M. Migeotte, L. Neven, and J. Sevenson, Mém. soc. roy. sci. Liége, Special Volume No. 1 (1956), Part I; Special Volume No. 2 (1957), Part II.

Mohler, O. C.

O. C. Mohler, A Table of Solar Spectrum Wavelengths (University of Michigan Press, Ann Arbor, Michigan, 1955).

O. C. Mohler, A. K. Pierce, R. R. McMath, and L. Goldberg, Photometric Atlas of the Near Infrared Solar Spectrum λ8465 to λ25 242 A (University of Michigan Press, Ann Arbor, Michigan, 1950).

Neven, L.

M. Migeotte, L. Neven, and J. Sevenson, Mém. soc. roy. sci. Liége, Special Volume No. 1 (1956), Part I; Special Volume No. 2 (1957), Part II.

Oxholm, M. L.

J. H. Shaw, R. M. Chapman, J. N.Howard, and M. L. Oxholm, Astrophys. J. 113, 268 (1951).

Peyturaux, R.

R. Peyturaux, Ann. Astrophys. 15, 302 (1952).

Pierce, A. K.

O. C. Mohler, A. K. Pierce, R. R. McMath, and L. Goldberg, Photometric Atlas of the Near Infrared Solar Spectrum λ8465 to λ25 242 A (University of Michigan Press, Ann Arbor, Michigan, 1950).

Sevenson, J.

M. Migeotte, L. Neven, and J. Sevenson, Mém. soc. roy. sci. Liége, Special Volume No. 1 (1956), Part I; Special Volume No. 2 (1957), Part II.

Shaw, J. H.

J. H. Shaw, R. M. Chapman, J. N.Howard, and M. L. Oxholm, Astrophys. J. 113, 268 (1951).

Williams, D.

J. N. Howard, D. E. Burch, and D. Williams, J. Opt. Soc. Am. 46, 186, 237, 242, 334 (1956).

Other (18)

S. P. Langley, Ann. Smithsonian Inst. 1, 1 (1900).

F. E. Fowle, Astrophys. J. 35, 149 (1912); 37, 359 (1913); 42, 394 (1915).

A. Adel, Astrophys. J. 90, 627 (1939); 93, 506 (1941); 96, 239 (942).

O. C. Mohler, A. K. Pierce, R. R. McMath, and L. Goldberg, Photometric Atlas of the Near Infrared Solar Spectrum λ8465 to λ25 242 A (University of Michigan Press, Ann Arbor, Michigan, 1950).

O. C. Mohler, A Table of Solar Spectrum Wavelengths (University of Michigan Press, Ann Arbor, Michigan, 1955).

J. H. Shaw, R. M. Chapman, J. N.Howard, and M. L. Oxholm, Astrophys. J. 113, 268 (1951).

M. Migeotte, L. Neven, and J. Sevenson, Mém. soc. roy. sci. Liége, Special Volume No. 1 (1956), Part I; Special Volume No. 2 (1957), Part II.

J. N. Howard, D. E. Burch, and D. Williams, J. Opt. Soc. Am. 46, 186, 237, 242, 334 (1956).

R. P. Madden, Ph.D. Dissertation, Johns Hopkins University, 1957.

W. H. Cloud, Ph.D. Dissertation, Johns Hopkins University, 1952.

H. J. Kostkowski, Ph.D. Dissertation, Johns Hopkins University, 1955.

A. Bernporad, Met. Z. 24, 309 (1907).

R. Peyturaux, Ann. Astrophys. 15, 302 (1952).

R. M. Goody, Quart. J. Roy. Met. Soc. 78. 165 (1952).

This assumes a constant distribution of the water vapor in the atmosphere although the total amount will vary.

W. M. Elsasser, Harvard Meteorological Studies, No.6 (1942).

D. M. Gates, J. Meteorol. 13, 369 (1956).

From a knowledge of the distribution of the water vapor in the atmosphere one can apply the appropriate pressure correction to α.

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