Cold deserts are pretty much cold all the time. Change ), You are commenting using your Google account. During the day in a desert such as the Sahara, a lot of sunlight heats the ground, which then heats the air. Why are deserts hot in day and cold at night?? After sunset, the hot ground looses heat rapidly by the processes of convection and radiation, which … Towards dawn these photons are actually warming the rocks. Anonymous Answered . At night the water in the air flings LW photons back at you instead of letting them off to space. How the COVID-19 Pandemic Will Change In-Person Retail Shopping in Lasting Ways, Tips and Tricks for Making Driveway Snow Removal Easier, Here’s How Online Games Like Prodigy Are Revolutionizing Education. Just do not get up with the sun (wait a couple of hours). ‘Sandman’ Steve is again describing what happens AT NIGHT in desert climes vs tropical humid climes. In the 1970s, the Sahel strip that stretches along the … In Vegas if the daytime temp hits 110˚ and it drops to 80˚ that’s a thirty degree drop. Dry air is a requirement for deserts and that is why they are cold at night. Due to Humidity- When the air is already saturated with water, sweat evaporates more slowly. 1 decade ago. But that’s not to say the land surface temperatures in this sun-drenched city are universally hot. Because of this, when the sun rises, it can get very hot very quickly. This confirms the insignificance of 0.04% of the atmosphere that is the well mixed greenhouse gas – CO2. Most of the heat at Earth's surface comes from sunlight. Report: Trump refusing to pay Giuliani for legal work. This is because (1) dry ground does not retain as much heat as moist ground, and (2) water vapor is the most important greenhouse gas , so dry air allows the surface to cool rapidly at night through loss of infrared radiation to outer space. The sun is HOT, the moon at night is cold! Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. 'The warmth of the day was starting to ebb away into space and the sun was starting to set like a giant red burning ball in the west. For those who are interested - indeed it was cold at night, eventhough the temperature in Tozeur was very nice (outside in tshirt in the evening). I have been in Phoenix in July when the dew point was close to 80 degrees. Antarctica, for example is the biggest desert on the planet and it has the lowest temperature on the planet. Most hot deserts are found between 15-30° north and south of the equator. Because of the lack of humidity in the area, the ground receives more than twice the radiation heat from the sun during the day and loses twice as much heat during the night in comparison to more humid environments. Also, humidity might be a greenhouse gas, but most of its effect on weather is unrelated to this fact. DAYS IN DESERT. So the diurnal temperature range can change in two ways. The desert is hot during the day is because the sand cannot hold or absorb heat so when the sun is present, it merely reflects the heat of the sun and radiates it to the atmosphere. Relevance. Duh. Tweet. Some do get very cold, typically sandy ones. Are deserts cold at night? The hot and dry deserts in which this pattern of heating and cooling occurs include the Mojave Desert and the Great Basin in the U.S. and the Sonoran and Chihuahuan Deserts in Mexico. You do not go to sleep at dark, but play as it is finally cool enough to be outside. 9 Answers. The moment you present empirical evidence to back up your claim, I will change my view. Why Are Deserts Hot in the Day and Cold at Night? Top Answer. Cold is relative. During the day, the land receives direct sunlight without any protection and at night the hot air escapes because of the lack of cover to keep in the heat. 2 See answers keziahms2009 is waiting for your help. Relevance. But of course gets colder when there's no warming sunlight coming down. To look at this from a physics point of view - deserts are regions of low or very low humidity. It always astonishes me when people start arguing with me over things I didn’t say. This is because (1) dry ground does not retain as much heat as moist ground, and (2) water vapor is the most important greenhouse gas , so dry air allows the surface to cool rapidly at night through loss of infrared radiation to outer space. Clear, cloudless skies also help to quickly release heat at night. Hypothyroidism. Halloween’s over but tomorrow I will scare a few creatures of habit with that prospect …. Why night in desert is cold? This means a big amount of cold air can be pulled down without getting warmed by the air that is rising up nearby. Rocks are different. Infact it would always stay above 85 … Answer Save. That slight hue of pink was turning to streaks of red and purple right across the sky, which was being caused by … Because of that, the heat gained during daytime can radiates faster at night and it gets quite cold. Few clouds also. During the day in a desert such as the Sahara, a lot of sunlight heats the ground, which then heats the air. ( Log Out /  To give an example in Scotland, with cloud cover the IR thermometer reads around 6C, without cloud, it reads about -40C. … Deserts are places with high pressure where the air sinks and, therefore the clouds evaporate by the adiabatic effect of a higher pressure. We were surprised how wet (beacuse of the dew) everything was in … For those who are interested - indeed it was cold at night, eventhough the temperature in Tozeur was very nice (outside in tshirt in the evening). This is the main reason that deserts can be hot during the day but cold during the night. You need to come up with new evidence, hopefully without the use of ‘stupid’ ‘simple’ and ‘basic’. Find answers now! moist air cools slower than dry air. No matter how hot they are during the day, desert temperatures often plunge at night. Post was not sent - check your email addresses! The desert animals and reptiles come out during night times. But you need to also provide bold evidence to back up your claim. 5 Answers. In the daytime, the cold air from overnight doesn’t stay trapped. Sometimes they aren't. Most of the heat at Earth's surface comes from sunlight. Most deserts have very low temperatures at night. Report: Trump refusing to pay Giuliani for legal work. Woden501. ( Log Out /  Why are deserts so cold at night? The clouds in ATL keep the land and city from heating up as much during the day… sunlight is reflected back or absorbed at higher altitude in Atlanta. 9NEWS meteorologist Kathy Sabine in her forecast tonight for the Denver metro area: … as the snow ends and the skies clear temperature’s going to drop like a rock without that blanket of clouds …. 99% of the atmosphere has little interaction with infra-red but O2 and N2 undergo temperature changes every day, everywhere including at desert locations. 10 years ago. I’m not discussing the “net effect” Dear Tom, How can the desert be so hot during the day and yet get so cold at night? You used the desert situation as evidence to back up your claim of that greenhouse warming effect, I believe I countered that. Why Are You Feeling Cold at Night? Your thyroid hormone levels may be low. When this happens the clouds (and that smattering of CO2) absorb the incoming long wave, reflect a lot of visible back to space, and leave only the measly UV and the remains of visible along with their recycled LW to warm you and the rocks. The main reason it is colder is because of lack of cloud cover. Biden unveils $1.9 trillion plan with direct payments. So it was emitting as much as your body would have without the coat. 1 Questions & Answers Place. This is the main reason that deserts can be hot during the day but cold during the night. Favourite answer. All of this makes you rather unpleasantly warm in July on the Green River until you jump in and have another beer. All that weed made you sleep for 3 months, and you woke up in winter! The very dry air of the desert holds little moisture and thus holds little heat; thus, as soon as the sun sets, the desert cools considerably. Most are not. Free e-mail watchdog. Your thyroid hormone levels may be low. 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Change ), You are commenting using your Twitter account. Desert area absorbs the heat from the sun and radiates it back to us (since heat rises). Relevance. Yes I realise you claim CO2 is saturated and further additions makes very little difference if at all, but what’s already there causes a greenhouse warming effect. If O2 and N2 do not radiate significantly the only mechanisms available to lower air temperature are random collisions of molecules with IR active molecules – < 2% chance on average – or convection of these warmed molecules to altitude where their temperature – read kinetic energy in physics speak – is reduced by conversion to gravitational potential energy. ANY QUESTIONS? 2 See answers keziahms2009 is waiting for your help. Further, clouds are composed of a mixture of water drops and vapour and as such are more dense than the surrounding air and require a warmer temperature – an uplifting air current – to remain aloft. Because of the heat and the lack of rainfall, there are no large canopy trees to shade animals or plants. I understand that the above fact doesn’t disprove your hypothesis, but nor have you proven anything after having made the bold statement (s). That is why it is cold at night in the desert. Deserts are extremely dry places with almost no humidity, so the heat can’t be retained during the night. The desert animals and reptiles come out during night times. This explains why it feels so much hotter in high humidity. Because of this, some deserts can get cold at night, dropping to below 40F, which is definitely coat weather. "Science is the belief in the ignorance of the experts" – Richard Feynman. Deserts can be hot or cold. Look at the Averages, not a single day in July, I’ve spent a lot of time in Phoenix and Atlanta, and there is no comparison!! wide, they have to be separated by about 6 to 12 in. Some of you people apparently have spent ALL your time in Mom’s basement, never experiencing even the most basic and elementary of meteorological events! Why night in desert is cold? Answer this question. Or the region of the atmosphere that experiences the variation in heat content changes. - 32165192 Zero humidity makes it colder. Why is the desert so cold at night? Why Is a Desert so Cold at Night? Much as your dedication to solving the riddle of ‘climate change’ are appreciated, Steve, it would appear you had other research in mind on this particular field trip. And from outside the planet, the effect of the cloud, is that “space” sees a layer of suspended water at a colder temperature than the land surface. Sometimes, depending on the location of the desert and the time of the year, it may drop below freezing at night. The reason for this is the lack of cloud. Deserts: deserts are covered with sands with cloud cover the IR thermometer reads around 6C, cloud! 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