Contact: Michael Schwartz
Temperature plays central roles throughout atmospheric science. It is a key parameter in the radiative balance of the atmosphere.
Temperature at a given pressure determines density and thus buoyancy, driving dynamics on all scales. Temperature controls chemical reaction rates and radiative transfer. Temperature is critically important in the hydrological cycle, controlling of cloud formation and the distribution of humidity.
MLS measurements of atmospheric composition require knowledge of temperature, but at the frequencies of MLS observations, thermal emission is roughly linear in gas temperature, so small fractional errors in inferred absolute temperature generally lead to correspondingly small errors in inferred constituent abundance.
How it is part of MLS Science Objectives
Temperature measurements are vitally important for addressing questions of radiative balance involved in climate change. Upper tropospheric temperature is particularly important to climate feedbacks involving the regulation of humidity and clouds.
Some models show temperature in the mesosphere to be particularly sensitive to climate change. Temperatures required for the formation of polar stratospheric clouds (PSCs) are at the extreme low end of those found in the northern polar winter.
PSCs play multiple roles in the catalytic destruction of ozone, and here MLS mission objectives of understanding stratospheric ozone layer stability and climate change are linked through temperature.
How EOS MLS measures Temperature
MLS temperature is retrieved primarily frombands near O2 spectral lines at 118GHz and 239GHz that aremeasured with MLS radiometers R1A/B and R3, respectively. Thee isotopic 239GHz line is the primary source of temperature information in the troposphere, while the 118GHz line is the primary source of temperature in the stratosphere and above.
Quick Product Information for data version v5
- Swath Name: Temperature
- Status Flag: Only use profiles for which the Status field is an even number.
- Useful Range: 261 - 0.00046 hPa
- DAAC Short Name: ML2T
- Precision: See v5 data quality document.
- Quality Threshold: See v5 data quality document.
- Convergence Threshold: <1.03
Latest Publications (Temperature)
Khaykin, S., E. Moyer, M. Krämer, B. Clouser, S. Bucci, B. Legras, A. Lykov, A. Afchine, F. Cairo, I. Formanyuk, V. Mitev, R. Matthey, C. Rolf, C. Singer, N. Spelten, V. Volkov, V. Yushkov and F. Stroh
Persistence of moist plumes from overshooting convection in the Asian monsoon anticycloneAtmos. Chem. Phys. Discuss. doi:10.5194/acp-2021-653, in review
Werner, F., N. Livesey, L. Millán, W. Read, M. Schwartz, P. Wagner, W. Daffer, A. Lambert, S. Tolstoff and M. Santee
Applying machine learning to improve the near-real-time products of the Aura Microwave Limb SounderAtmospheric Measurement Techniques Discussions doi:10.5194/egusphere-2023-101, in review
Qiu, S., M. Yuan, W. Soon, V.V. Herrera, Z. Zhang, C. Yang, H. Yousof and X. Dou
Solar-induced 27-day modulation on polar mesospheric cloud PMC, based on combined observations from SOFIE and MLSFront. Astron. Space Sci. doi:10.3389/fspas.2023.1168841, 2023
Shangguan, M. and W. Wang
Analysis of Temperature Semi-Annual Oscillations SAO in the Middle AtmosphereRemote Sens. doi:10.3390/rs15030857, 2023
Thurairajah, B., S. Bailey, V.L. Harvey, C. Randall and J. France
The Role of the Quasi 5‐Day Wave on the Onset of Polar Mesospheric Cloud Seasons in the Northern HemisphereJournal of Geophysical Research: Atmospheres doi:10.1029/2022jd037982, 2023
Wang, P., S. Solomon and K. Stone
Stratospheric chlorine processing after the 2020 Australian wildfires derived from satellite dataProc. Nat. Acad. Sci. doi:10.1073/pnas.2213910120, 2023
Athreyas, K.N., R. Garcia and A. Chandran
Inter‐Hemispheric Coupling During Sudden Stratospheric Warming Events With Elevated StratopauseJournal of Geophysical Research: Atmospheres doi:10.1029/2020jd033761, 2022
Dalin, P., H. Suzuki, N. Pertsev, V. Perminov, D. Efremov, P. Voelger, V.L. Narayanan, I. Mann, I. Häggström, M. Zalcik, O. Ugolnikov, J. Hedin, J. Gumbel, R. Latteck and G. Baumgarten
Studies of noctilucent clouds from the stratosphere during the SONC balloon-borne experiment in 2021J. Atmos. Solar-Terr. Phys. doi:10.1016/j.jastp.2022.105959, 2022
Eswaraiah, S., K. Seo, K. Kumar, M. Ratnam, A. Koval, J. Jeong, C. Mengist, Y. Lee, K. Greer, J. Hwang, W. Lee, M. Pramitha, G.V. Chalapathi, M.V. Reddy and Y. Kim
Anthropogenic Influence on the Antarctic Mesospheric Cooling Observed during the Southern Hemisphere Minor Sudden Stratospheric WarmingAtmosphere doi:10.3390/atmos13091475, 2022
Harvey, V.L., N. Pedatella, E. Becker and C. Randall
Evaluation of Polar Winter Mesopause Wind in WACCMX+DARTJournal of Geophysical Research: Atmospheres doi:10.1029/2022jd037063, 2022