Weather station, Mozal - Aluminum Smelter - Maputo, Mozambique - installed in 1998
More weather station photos from Africa here.
These stations shown and linked above are not GHCN stations as far as I can tell, but the siting was interesting nonetheless.
This new paper by John Christy, who works with Dr. Roy Spencer on the UAH dataset, points out that Tmin seems to have a signal in Africa where Tmax does not. Land use changes and aersols that affect the boundary layer at night are theorized and possible reasons. – Anthony
Surface Temperature Variations in East Africa and Possible Causes
JOHN R. CHRISTY, WILLIAM B. NORRIS, AND RICHARD T. MCNIDER
Earth System Science Center, University of Alabama in Huntsville, Huntsville, Alabama
ABSTRACT
Surface temperatures have been observed in East Africa for more than 100 yr, but heretofore have not been subject to a rigorous climate analysis. To pursue this goal monthly averages of maximum (TMax), minimum (TMin), and mean (TMean) temperatures were obtained for Kenya and Tanzania from several sources. After the data were organized into time series for specific sites (60 in Kenya and 58 in Tanzania), the series were adjusted for break points and merged into individual gridcell squares of 1.258, 2.58, and 5.08.
Results for the most data-rich 58 cell, which includes Nairobi, Mount Kilimanjaro, and Mount Kenya, indicate that since 1905, and even recently, the trend of TMax is not significantly different from zero. However, TMin results suggest an accelerating temperature rise.
Uncertainty estimates indicate that the trend of the difference time series (TMax2 TMin) is significantly less than zero for 1946–2004, the period with the highest density of observations. This trend difference continues in the most recent period (1979–2004), in contrast with findings in recent periods for global datasets, which
generally have sparse coverage of East Africa. Read the rest of this entry »
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