I think these papers could help you;

They're available on the ResearchGate Server for download.

Hi Salam

Hope you are doing good.

This is a great topic and needs a comprehensive literature review to answer the associations of climate and solid porosity. I believe you can conduct literature by separating the variables that you think could be of great importance. For example, I found soil moisture associated with climate in an interesting article entitled:

"Soil moisture variability across climate zones" Article Soil moisture variability across climate zones

in this paper, porosity is also considered an important parameter for the level of moisture in different climatic zones.

Thank you for your kindness

There are many effects of climate on soil such as precipitation (Rainfall runoff) can penetrate into soil and increase level of waterlogging capacity. So measure the intensity of rainfall and the take the samples of soil texture to ascertain the degree of water retention that might affects soil. Good luck.

In arid and semi-arid climate soils become alkaline, calcareous and sodic, which would reduce the soil porosity specially in heavy-textured soils. In sub-humid to humid climates because of profuse vegetation , soil porosity will be improved.

I recommend @ Ibrahim Sufiyan and @ Dilip Kumar Pal. I think the drying process due ti heat can increase pores and water will dry up. In clayey soil wet weather can decrease the soil pores. However, the physical property of soil porosity is subject to changes depending on initial soil moisture level. Thank you.

Thank you for your kind words. Do you have any sources for that?

I think each and every climatic factor may influence porosity of the soil either to a greater extent or to some extent depending on so many factors..in higher temperature conditions, there will be more evaporation and transpiration thereby more water loss resulting in accumulation of salts over soil surface thereby lesse porosity..higher rainfall may result in waterlogging thereby lesser porosity...Higher relative humidity means lesser vapour pressure difference to make RH 100%, then good porosity..higher temperature results in fast decomposition of organic matter which yields humus markedly, hence good porosity...but prolonged rise in temperature may results in lesser porosity as organic matter makes soil more friable with good pore size arrangements...

The higher the temperature the less the precipitation that allows water to pass through the soil, thus, rise to arid soils. The lower the temperature the more the pressure which give rise to humid soils with more organic content. Therefore, porosity depends on water content, soil type and climate