Kuphatikiza pa nyengo zikuluzikulu, mwachilengedwe pali zosintha zingapo komanso zachikhalidwe, mawonekedwe am'madera ena achilengedwe komanso mtundu wina wamalo. Mwa mitundu iyi, ndikofunikira kuwonetsa malo owumawa, omwe amapezeka mchipululu, ndi Humid, nyengo yodzaza madzi, yomwe ili m'malo ena apadziko lapansi.
Nyengo yowuma
Mtundu wouma wanyengo umadziwika ndikowuma komanso kutentha kwamlengalenga. Mpweya wopitilira 150 millimeter pachaka, ndipo nthawi zina sikugwa konse. Kusintha kwa kutentha kwa usiku ndi usana ndikofunikira, komwe kumathandizira kuwononga miyala ndikusintha kwawo kukhala mchenga. Mitsinje nthawi zina imadutsa mchipululu, koma apa imakhala yopanda madzi kwambiri ndipo imatha kukathera munyanja zamchere. Nyengo yamtunduwu imadziwika ndi mphepo yamphamvu yomwe imapanga mpumulo wosasunthika wa milu ndi milu.
Nyengo yowuma imapezeka m'malo awa:
- Chipululu cha Sahara;
- Chipululu cha Victoria ku Australia;
- zipululu za Arabian Peninsula;
- ku Central Asia;
- kumpoto ndi South America.
Asayansi amasiyanitsa mitundu ing'onoing'ono yotsatirayi: nyengo yamapululu otentha, zipululu zozizira komanso nyengo yabwino yamchipululu. Nyengo yotentha kwambiri m'zipululu za North Africa, South Asia ndi Middle East, Australia, USA ndi Mexico. Nyengo yamapululu ozizira amapezeka makamaka ku Asia, mwachitsanzo, m'chipululu cha Gobi, Taklamakan. Nyengo yozizira m'zipululu za South America - ku Atacama, North America - ku California, ndi ku Africa - madera ena a Chipululu cha Namib.
Nyengo yachinyontho
Nyengo yamkuntho imadziwika ndi kuchuluka kwa chinyezi m'derali kotero kuti mvula yamlengalenga yambiri imagwa kuposa nthawi yokhala ndi nthunzi. Madzi ambiri amapangidwa m'derali. Izi zitha kuwononga nthaka ngati kukokoloka kwa madzi kumachitika. Zomera zokonda chinyezi zimamera pano.
Pali magawo awiri azanyengo:
- Polar - yopezeka mdera lomwe lili ndi dothi losalala, kudyetsa mitsinje kumalephereka, ndipo kukwera kwamvula;
- kotentha - m'malo awa, mvula imagwa pang'ono pang'ono.
M'derali ndi nyengo yamvula, pali nkhalango zachilengedwe, komwe mungapeze mitundu yambiri yazomera.
Chifukwa chake, m'malo ena, nyengo zapadera zimatha kudziwika - mwina kouma kwambiri kapena chinyezi kwambiri. Malo am'chipululu ali ndi nyengo youma kumene kumatentha kwambiri. M'nkhalango, momwe mumakhala mvula yambiri komanso chinyezi chambiri, nyengo yamvula yayamba. Izi zazing'ono sizimapezeka kulikonse padziko lapansi, koma m'malo ena ake.
