Prophecy and Prediction: Forecasting Drought and Famine in British India and the Australian Colonies

2020 ◽  
Vol 13 (1) ◽  
pp. 95-132 ◽  
Author(s):  
Ruth A. Morgan

In British India and the Australian colonies, drought and famine, as well as other hazards, were challenges facing local and metropolitan meteorologists. In this article, I examine the colonial and environmental contexts that animated the studies of both Indian and Australian scientists and the meteorological futures they sought to realise. Colonial scientists in India and Australia were eager to develop means of seasonal weather prediction that could aid the advancement of Empire underway in their respective continents. As this article shows, meteorologists in both places understood that the climate knowledge emerging on each side of the east Indian Ocean could be mutually beneficial in related ways. Their vast continental scales, imperial bonds, geographic orientation and telegraphic connection made them worthy partners in colonial efforts to discern and predict weather patterns, while contributing to the wider field of meteorological science. The threat to colonial security and prosperity that drought and famine posed helped to thicken the bonds between these reaches of the empire, as their meteorologists sought to impose their territorial logic of the skies above.

1969 ◽  
Vol 20 (1) ◽  
pp. 1 ◽  
Author(s):  
DJ Rochford

Tropical and subtropical water masses at surface and subsurface depths were separated by their salinity, temperature, oxygen, and nutrient characteristics. The annual mean depths and latitudinal extent of these water masses were determined. Annual changes in the upper 50 m were generally so small relative to those found in other oceans that advection and mixing must have been less important in their genesis than local climatic changes. There was a barely significant seasonal rhythm in surface phosphate and nitrate, with peak occurrences of each some 6 months apart. At each latitude the permanent thermal discontinuity centred around a particular isotherm varied little in intensity during the year, but rose and fell in accordance with surface currents. The thermocline south of c. 18�S. varied little in depth but greatly in intensity during the summer. The depth of the mixed layer was much less in summer and at all times shallower in the tropics. The depth of this layer was governed more by the accumulation of surface waters by zonal currents and eddies, than by wind stress or convective overturn. Therefore there was little difference from south to north, or month to month, in average nutrient values of this mixed column. The movement of the various surface waters, deduced from salinity and temperature changes during the year, usually agrees with geostrophic currents across 110�E, and ships' observations of surface currents in the south-east Indian Ocean.


Author(s):  
Xiaoqing Cai ◽  
Xiaoyong Wang ◽  
Jie Meng ◽  
Dayong Bi ◽  
Qingwei Zhou

1979 ◽  
Vol 13 (5) ◽  
pp. 201-206 ◽  
Author(s):  
Takashi Okubo ◽  
Kazunori Furuyama ◽  
Masanobu Sakanoue

2014 ◽  
Vol 76 (1) ◽  
pp. 283-301 ◽  
Author(s):  
Ki-Seon Choi ◽  
Sangwook Park ◽  
Ki-Ho Chang ◽  
Jong-Ho Lee

2020 ◽  
Vol 389 ◽  
pp. 121846 ◽  
Author(s):  
Xiaohui Wang ◽  
Changjun Li ◽  
Kai Liu ◽  
Lixin Zhu ◽  
Zhangyu Song ◽  
...  

1963 ◽  
Vol 14 (1) ◽  
pp. 1 ◽  
Author(s):  
DJ Rochford

A new method for the detection of water masses and for the tracing of their mixing paths is described. Histograms of the salinity frequency distribution on 0.10 σt intervals from σt 26.90 to 27.70 contain modes which indicate the salinity characteristics of the intermediate water masses of the south-east Indian Ocean. These salinity characteristics are used to trace the extent of spreading of the water masses on these σt intervals and to determine trajectories of shallow and deep mixing. Comparison is made of the results obtained by the new method with those by the core method for the water masses and circulation in intermediate depth of the south-east Indian Ocean. The core method in this region has not been able to show the large extent of deep mixing associated with the spreading of the Banda and Antarctic Intermediate water masses. The core method has also failed to show the widespread distribution of patches of Banda water at about 400-500 m throughout the whole south-east Indian Ocean.


Sign in / Sign up

Export Citation Format

Share Document