Vad jag fann var att stora klimatförändringar med uttorkning hade ägt rum för flera tusen år sedan.

I nutiden fann jag att:

1.  Detta ökenområde är världen tätast befolkade ökenområde.

2.  Folkmängden har mer än fördubblats sedan 1970. Från 48 individer per/km2 1971 till 101 per/km2 år 2000.

3.  Regnmängderna har inte nämnvärt förändrats sedan 1960. Se diagrammen nedan.

4.  Vissa år som det är El Nino så uteblir regnen.

5.  Den stora befolkningsökningen tär på områdets markresurser, betet av husdjur leder till jorderosion.

6.  Planteringar av görs för att motverka erosionen

7.  En stor kanal med sötvatten, Indira Gandhi Kanalen, har grävts för att befolkningen ska få mer sötvatten till bevattning bla.

Greening desert with plantations of jojoba at Fatehpur, Shekhawati,

Fast som vanligt så påstår IPCC att det ska bli torrare i denna region.

The Inter-Governmental Panel on Climate Change (IPCC, 2007) projected for more hotter days and warm nights and a reduction in rainfall in Thar region by 21st century. Such projected climate change results in shifting rainfall pattern, higher temperatures, more demand for water and will be significant driver of biodiversity with changing life cycles, loss, migration and invasion of new habitat in Thar region. 

https://www.researchgate.net/publication/320558959_CLIMATE_CHANGE_SCENARIOS_INFLUENCING_THE_THAR_DESERT_ECOSYSTEM

Klimatförändringar för ett par tusen år sedan.

Over the middle and late Holocene, increasing activity of ENSO and location of the ITCZ at southern latitudes reduced geographic coverage of the southwest monsoon and led to a drier hydroclimate.

https://www.sciencedirect.com/science/article/pii/S1405888X1600005X

Holocen är de senaste 10 000 åren, alltså sedan istiden slutade.

Regnmängder

Diagrammet nedan visar regnmängderna på fyra områden. Det kan skilja flera hundra mm mellan olika år. Det finns olika små lokala trender när det gäller nederbörd får vi vet.

Similarly, though there was no significant rise in the annual rainfall of 12 arid districts of western Rajasthan during the past century, the annual rainfall is likely to increase in locations like Bikaner, Jaisalmer, Pali, whereas a reduction in rainfall at locations like Jodhpur. Such shifts in rainfall pattern of arid Rajasthan are thus likely to continue further under the influence of projected global climate change by 21st century and influence the cropping pattern of the region.

http://shodhganga.inflibnet.ac.in/bitstream/10603/58801/7/07_chapter%203.pdf

Stora klimatförändringar även utan människans CO2 - utsläpp

The harshest period of aridity ended around 7,000 years ago, and the area received unprecedented rainfall. As the vegetation reverted to its pre-desert lushness, the people turned to nomadic pastoralism, tending sheep and cattle - a life-style that endures till today.

The wet stretch lasted 3,000 years, but then semiarid conditions set in - and man was able to adapt to that too. Misra sums up: "The Thar Desert was created because of climatic and hydrological changes, and man's role has been minimal. In fact, man has adapted very well to the semiarid conditions."
 

Misra's advice about intensive irrigation is all the more timely because the Thar is now supporting an exploding population of around 10 million. The grazing lands are shrinking and the scanty - and rare - rainfall encourages piecemeal agriculture in areas where the sand dunes have stabilised over several thousand years. This loosens topsoil and aids wind erosion, adding to the damage caused by overgrazing. As Misra warns: "If we try to mix unirrigated agriculture and concentrated grazing, that spells doom."
 

Warnings: Conservationists abroad hold views that reinforce the Didwana team's findings. In his book Losing Ground, Erik P. Eckholm points out that north-west India is the world's most densely populated arid zone. Unplanned and unirrigated cultivation on the one hand, and shrinking grazing lands on the other, says Eckholm have seriously affected "the productivity of an arid area covering more than a fifth of India, an area larger than France".

https://www.indiatoday.in/magazine/heritage/story/19820430-climatic-and-hydrological-changes-created-thar-desert-771727-2013-10-15