A frequency band of microwave radiation in which radars operate.
- Browse Related Terms: ASR-9, Derived Products, Meteorologist, Multiple Doppler Analysis, NEXRAD, Product Resolution, TDWR, TVS, WSR-88D, X-Band
In solar-terrestrial terms, a daily average background X-ray flux in the 1 to 8 angstrom range. It is a midday minimum designed to reduce the effects of flares.
- Browse Related Terms: Active Longitude, Active Region (AR), burst, Comprehensive Flare Index (CFI), H-Alpha, Homologous Flares, Hyder Flare, Limb Flare, Loop Prominence System, LPS, Magflare, Microwave Burst, Post-Flare Loops, White Light Flare, X-Ray Background, X-Ray Burst, X-Ray Flare Class
In solar-terrestrial terms, a temporary enhancement of the X-ray emission of the sun. The time-intensity profile of soft X-ray bursts is similar to that of the H-alpha profile of an associated flare.
- Browse Related Terms: Active Longitude, Active Region (AR), burst, Comprehensive Flare Index (CFI), H-Alpha, Homologous Flares, Hyder Flare, Limb Flare, Loop Prominence System, LPS, Magflare, Microwave Burst, Post-Flare Loops, White Light Flare, X-Ray Background, X-Ray Burst, X-Ray Flare Class
In solar-terrestrial terms, rank of a flare based on its X-ray energy output. Flares are classified by the order of magnitude of the peak burst intensity (I) measured at the earth in the 1 to 8 angstrom band as follows:
Class Intensity (in Watts/m2) B I < 10-6 C 10-6 <= I < 10-5 M 10-5 <= I < 10-4 X I >= 10-4 - Browse Related Terms: Active Longitude, Active Region (AR), burst, Comprehensive Flare Index (CFI), H-Alpha, Homologous Flares, Hyder Flare, Limb Flare, Loop Prominence System, LPS, Magflare, Microwave Burst, Post-Flare Loops, White Light Flare, X-Ray Background, X-Ray Burst, X-Ray Flare Class
Very energetic electromagnetic radiation with wavelengths intermediate between 0.01 and 10 nanometers (0.1-100 Angstroms) or between gamma rays and ultraviolet radiation. Essentially all X-Rays from space are absorbed in the Earth's upper atmosphere.
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Expendable Bathythermograph
- Browse Related Terms: Cutoff Low, IFR, LIFR, NEWD, QSTNRY, Quasi-stationary, Quasi-stationary Front, Radiosonde, STNRY, XBT
Excited
- Browse Related Terms: ABT, ABV, ACRS, AFT, AFTR, AGN, ALG, ALTHO, AMD, AOA, AOB, ARND, AVBL, BCM, BCMNG, BFR, BGN, BHND, BLO, BLV, BRF, BTR, BTWN, BYD, CFC, CHGS, CLR, DMSH, DURG, EBND, EFCT, ELSW, ENDG, ERLY, EXCLD, FASTST, FM, FTHR, GEN, GNRL, GRT, GRTST, GTR, HND, HV, HWVR, IMPT, INDC, LN, LRG, LTL, LTR, LTST, MDNGT, METRO, MISC, MISG, MNLY, MR, MSTLY, NBND, NEC, NIL, NLY, NMBR, NR, NWLY, NWRD, NWRN, NXT, OTR, OTRW, OVR, PCT, PRBLY, PSBL, PSBLY, QG, RIOGD, RTRD, RW, SBND, SEWD, SGFNT, SPCLY, SS-, Sun Dog, SVRL, SWWD, SXN, TDA, THRFTR, THRU, THRUT, TIL, TWD, WBND, WL, XCITED, YDA
Expecting
- Browse Related Terms: EPCTG, Freezing Drizzle Advisory, Freezing Rain Advisory, Outlook, PFD, QPF Discussion, Synopsis, XCPT, XPC
Expect
- Browse Related Terms: EPCTG, Freezing Drizzle Advisory, Freezing Rain Advisory, Outlook, PFD, QPF Discussion, Synopsis, XCPT, XPC
Cross Section
- Browse Related Terms: albedo, Angle of Reflection, Dispersion, Graybody, OLR, Radar Reflectivity, Reflectivity, ultraviolet radiation, X-rays, XSEC