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Everything about Longwave
Radio transmission using wavelengths above 1000 m
In radio, longwave is the part of the radio spectrum with wavelengths longer than what was originally called the medium-wave (MW) broadcasting band. The term is historic, dating from the early 20th century, when the radio spectrum was considered to consist of LW, MW, and short-wave (SW) radio bands. Most modern radio systems and devices use wavelengths which would then have been considered 'ultra-short'. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: LongwaveA 5-minute orientation
- Skim a recent paper: Longwave infrared (6.6–11.4 µm) dual-comb spectroscopy with 240,000 comb-mode-resolved data points at video rateInfluential work since 2022
- Pick up a classic book: Atlas of wide-field-of-view outgoing longwave radiation derived from Nimbus 6 earth radiation budget data set, July 1975 to June 1978The most-reprinted book on the subject
- Read the landmark paper: Radiative transfer for inhomogeneous atmospheres: RRTM, a validated correlated‐k model for the longwaveCited 7,344 times
- Go sideways: Medium waveA closely related topic
- Go sideways: Medium frequencyA closely related topic
📖 Definitions
Adjective Having a wavelength of greater than 1000 meters.
Adjective Capable of transmitting or receiving signals at such a wavelength.
Noun Radio having a wavelength greater than 1000 meters.
🗂️ The subject at a glance
🏆 Landmark papers (most cited)
Radiative transfer for inhomogeneous atmospheres: RRTM, a validated correlated‐k model for the longwave
Photochemotherapy of Psoriasis with Oral Methoxsalen and Longwave Ultraviolet Light
On downward shortwave and longwave radiations over high altitude regions: Observation and modeling in the Tibetan Plateau
Impact of an improved longwave radiation model, RRTM, on the energy budget and thermodynamic properties of the NCAR community climate model, CCM3
Increased Arctic cloud longwave emissivity associated with pollution from mid-latitudes
Aspects of the 40–50 Day Oscillation during the Northern Summer as Inferred from Outgoing Longwave Radiation
Surface Irradiances Consistent with CERES-Derived Top-of-Atmosphere Shortwave and Longwave Irradiances
Why is longwave cloud feedback positive?
🆕 Influential since 2022
Longwave infrared (6.6–11.4 µm) dual-comb spectroscopy with 240,000 comb-mode-resolved data points at video rate
Aberration‐corrected hybrid metalens for longwave infrared thermal imaging
High-quality microresonators in the longwave infrared based on native germanium
An atmospheric influence correction method for longwave radiation-based in-situ land surface temperature
Inverse Design of Aberration-Corrected Hybrid Metalenses for Large Field of View Thermal Imaging Across the Entire Longwave Infrared Atmospheric Window
📚 Books worth reading
- 📕Atlas of wide-field-of-view outgoing longwave radiation derived from Nimbus 6 earth radiation budget data set, July 1975 to June 1978T. Dale Bess · 1987
- 📕Atlas of wide-field-of view outgoing longwave radiation derived frm Nimbus 7 earth radiation budget data set, November 1978 to October 1985T. Dale Bess · 1987
- 📕El Niño and outgoing longwave radiationH. Lee Kyle · 1986
- 📕Spurious semi-diurnal variation in the E.R.B.E. outgoing longwave radiationChandrasekhara R. Kondragunta · 1995
- 📕Atlas of wide-field-of-view outgoing longwave radiation derived rom Nimbus 7 Earth Radiation Budget Data set, November 1985 to October 1987T. Dale Bess · 1991
New findings in long-wave researchAlfred Kleinknecht, Ernest Mandel · 1992
UV-AJohn Parrish · 2012
UV-A:Biological Effects of Ultraviolet RadiationJohn Parrish · 1978
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
- Medium wave Medium wave (MW) is a part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. The spectrum provides about 120 channels with…
- Medium frequency Medium frequency (MF) is the ITU designation for radio frequencies (RF) in the range of 300 kilohertz (kHz) to 3 megahertz (MHz). Part of this band is…
- Low frequency Low frequency (LF) is the ITU designation for radio frequencies (RF) in the range of 30–300 kHz. Since its wavelengths range from 10–1 km, respectively…
- Droitwich Transmitting Station The Droitwich transmitting station is a large broadcasting facility for medium-wave, and also formerly long-wave radio transmissions, established in 1934…
- Digital Radio Mondiale Digital Radio Mondiale (DRM; mondiale being Italian and French for "worldwide") is a set of digital audio broadcasting technologies designed to work over…
- Shortwave radio Shortwave radio is radio transmission using radio frequencies in the shortwave bands (SW). There is no official definition of the band range, but it always…
- Skywave In radio communication, skywave or skip refers to the propagation of radio waves reflected or refracted back toward Earth from the ionosphere, an electrically…
- Geneva Frequency Plan of 1975 The Final Acts of the Regional Administrative LF/MF Broadcasting Conference (Regions 1 and 3) Geneva, 1975 is the internationally agreed frequency plan…