Yes. There are definitions available, going from deficit rainfall to drought all the way to famine, depending on the intensity and impact.

Dear Maftuna Karimboeva

Droughts when affects human life, become a drought disaster. The types as described by Dr. Jochen Hack are processes taking place throughout the globe and have been taking place throughout the history of Earth.

Dear Dr Maftuna Karimboeva . Yes. This including :

1. meteorological drought,

2. hydrological drought,

3. agricultural drought, and

4. socioeconomic drought. Meteorological drought happens when dry weather patterns dominate an area. See the link: https://www.ncdc.noaa.gov/monitoring-references/dyk/drought-definition#:~:text=As%20a%20result%2C%20the%20climatological,weather%20patterns%20dominate%20an%20area.

Kindly see also the following useful RG link: Article A quantitative evaluation of the issue of drought definition...

Also check please the following useful RG link: Article Drought termination: Concept and characterisation

The following RG link is also very useful: Article Spatio-temporal characteristics of meteorological drought in...

https://www.pnnl.gov/main/publications/external/technical_reports/PNNL-23483.pdf

https://doi.org/10.17311/sciintl.2016.51.73

https://doi.org/10.3390/w12051360

https://doi.org/10.15406/mojes.2017.02.00026

Good luck.

Warmer temperatures enhance evaporation, which reduces surface water and dries out soils and vegetation. This creates the need for expanded water storage during drought years and increased risk of flooding and dam failure during periods of extreme precipitation. Drought corresponds to a situation of sufficient water deficit to harm, to a greater or lesser degree, vegetation, animals or man. This is why water deficit should not be confused with drought. If there is no damage, there is no talk of drought, even if there is a water deficit. Weather variability and climate change are also inherent in deriving the changes coupling with anthropogenic factors. The region is known as being one of the least developed in terms of economic, social, and technological advancements. Moreover, drought is a reduction in precipitation over an extended period. This creates a water shortage that damages crops, livestock, and the environment. If the economy is already in a state of depression or recession, a drought can increase that state. Climate change can also amplify the effects of a drought.Agricultural drought is characterized by lack of sufficient moisture in the surface soil layers to support crop and forage growth. Indicators of agricultural drought often are precipitation, temperature and soil moisture to measure soil moisture and crop yield.

The U.S. Drought Monitor (USDM) established a numeric drought classification scale of five different levels: D0, D1, D2, D3, and D4.

D0 is normal conditions.

D1 is moderate drought category. D1, corresponds to an area where damage to crops and pastures can be expected and where fire risk is high, while stream, reservoir, or well levels are low.

The severe drought category, D2, corresponds to an area where crop or pasture losses are likely, fire risk is very high, water shortages are common, and water restrictions are typically voluntary or mandated.

The extreme drought category, D3, corresponds to an area where major crop and pasture losses are common, fire risk is extreme, and widespread water shortages can be expected requiring restrictions.

The highest category, exceptional drought, or D4, corresponds to an area experiencing exceptional and widespread crop and pasture losses, fire risk, and water shortages that result in water emergencies.

According to the farmers in my area (N. American Prairies) we are having a drought that is getting worse. The moisture in the soil (this is how the farmers predict crop yields) determines which crop to pick for the coming season.

It used to be wet summers, but now is generally dry summers with some extreme downpours.

The recent 550-page UN report (the must-to-be read) entitled "Creating a Sustainable Food Future" warns that world hunger figures are on the rise again. It is available on:

https://www.wri.org/research/creating-sustainable-food-future

The report, produced in partnership with CIRAD, the World Bank, UNEP, UNDP and INRA, offers solutions to feed the planet in 2050 without destroying it. The report estimates that to meet the challenge of feeding 10 billion people in 2050, without destroying the planet, it would be necessary to be able to: produce 56% more food, compared to 2010, avoiding the use of 600 million hectares of additional agricultural land, and reducing greenhouse gas emissions by 11 gigatonnes to comply with the Paris Agreement.

To meet this challenge, the report proposes a “menu” of 5 solutions: (i) Reduce the growth in food demand, by reducing losses and waste, by adopting healthier diets; (ii) Increase food production without expanding the area of ​​agricultural land by increasing productivity in agriculture and livestock; (iii) Protect and restore natural ecosystems by reducing deforestation, restoring peat-lands and linking yield gains to ecosystem conservation; (iv) Increase fishery resources by improving aquaculture systems and better managing fisheries; (v) Reduce greenhouse gas (GHG) emissions from agricultural production through innovative agricultural technologies and methods

Dear Readers, The issue of National Water Security concerns drinking water supply but also food safety, linked to agricultural policy. Both rainfed and irrigated agriculture play complementary roles in food security, and the water issue implies a holistic view of water resources. To discuss this issue, I just started a discussion on water security and food security in arid countries:

(5) National Water Security in Water-Scarce Countries (researchgate.net)