Experimental work was carried out to determine the net flux of the long-wave radiation from
the earth's surface to the atmosphere for clear nights in Nsukka, Nigeria. Values of the …

Diurnal global irradiation was measured with precision pyranometer in Nsukka, Nigeria and
compared with values generated from five different empirical models proposed by earlier …

The total solar radiation during the harmattan months of 1982 to the early part of 1984 at
Enugu, Nigeria, which lies on latitude 6.47° N and longitude 7.55° E and 140 m above sea …

A knowledge of downward atmospheric radiation at the earth's surface having wavelengths
of the order 4--40 itm is of fundamental importance for certain purposes such as solar …

Abstract Two Kipp and Zonen solarimeters, one of which incorporated a shadow ring, were
used for the measurement of the global and diffuse components of solar radiation for Kano …

An empirical correlation for estimating monthly mean daily total solar radiation on a
horizontal surface is suggested from latitude, altitude, sunshine duration, monthly mean …

Measurements of beam and diffuse solar irradiance on a horizontal surface have been
utilized to verify simple methods of prediction of solar radiation. Measurements of hourly …

Methods of measuring and results of analyses of data spanning a period of two years on
global solar radiation, global photosynthetically-active radiation (PAR) and downward …

This study attempts to circumvent the problem of paucity of input data required in climatology
mapping of clear-sky solar irradiance in Nigeria by computing beam normal (E bn) and …

The data on global irradiation incident on a horizontal surface in Port Harcourt during the 13-
year period 1977–1989 are analyzed and shown to vary with the climatic changes of the …