Acronymns, Abbreviations and Notations




NUMBERS
1D-C
PMS optical array probe; 20-600 m @ 20 m resolution
1D-P
PMS optical array probe; 0.3-4.5 m @ 0.3 m resolution
1-D
one-dimensional
2D-C
PMS optical array probe; 31-992 m @ 31 m resolution
2D-GA2
(PMS optical aerosol probe; cloud particles)
2D Grey 25
aerosol probe(25 m < D < 1.5 mm)
2D Grey 40
aerosol probe(40 m < D < 2.6 mm)
2D-P
PMS optical array probe; 100 m to 6 millimeters
2-D
two dimensional
3-D
three dimensional
3M
Minnisota Mining and Manufacturing, Inc.


SUBSCRIPTS

a
refers to atmospheric signal
B
bottom of cloud layer
c
refers to cloud signal
clr
clear sky
cld
cloudy sky
cs
clear sky
i
channel number
lc
lower level cloud
T
top of cloud layer
uc
upper level cloud


GREEK


cloud albedo or reflectance; cloud extinction coefficient; off-axis angle for Fraunhofer diffraction
c
cloud albedo
d
diffuse cloud albedo
s
surface reflectivity
sd
clear-sky diffuse albedo

coefficient of volume expansion; volume backscatter coefficient; backscatter fraction; lidar relative backscatter; aspect ratio
(R)
backscatter cross-section per unit volume
(R)
extinction cross-section per unit volume
ext
extinction coefficient
p
backscatter cross-section

anisotropic reflectance correction factor; off vertical beam axis angle

difference
BT
difference in equivalent brightness temperature
N
change in cloud drop concentration
qt
jump in total water mixing ratio
R
change in upward radiance; range resolution
r
cloud top total water jump
T
temperature difference
z
cloud geometrical thickness

depolarization ratio; optical thickness of cloud
c
correction term for reduced cloud emission
s
correction term for scatter into radiometer FOV
t
sampling interval

turbulent dissipation rate; TKE dissipation rate; cloud emissivity; emittance
*
IR downward effective emmitance

scan angle; viewing azimuth relative to solar plane(=0o is forward scatter)
v
ERBE spectral response function

volume reflrctivity; radar backscatter coefficient

wavelength

cosine of viewing zenith angle; coefficient of molecular viscosity; droplet radius; mean; cos
m
micrometer(10-6)
o
cosine of solar zenith angle

shape parameter

angle of incidence
; e; THETAE
equivalent potential temperature; satellite zenith angle(measured from downward normal direction)
l
liquid water potential temperature or saturation point potential temperature
o
solar zenith angle
v
virtual potential temperature
w
wet bulb potential temperature

visible reflectance; ice density
i
ice crystal density
L
water density
s
clear-sky bidirectional reflectance albedo

backscatter cross-section; Stefan-Boltzmann constant; volume extinction coefficient; standard deviation
1
standard deviation of downward longwave radiation
e
extinction coefficient
u
rms horizontal wind fluctuation
w
rms vertical wind fluctuation

visible optical depth; Reynolds stress; momentum flux; persistance time; laser pulse length
*
optical thickness
a
IR absorption optical depth
c
optical thickness of cloud; surface flux
L
time for complete homogenization
nir
NIR optical depth
s
ratio of scattering optical depth to absorption optical depth

wave number

single scattering albedo
m
measured liquid water content

stream function; relative azimuth angle

shortwave effective extinction; vorticity; zenith angle


ALPHABETICAL

A
member of Arctic Working Group; ascending; measured sampling area
a
width; particle radius
AAO
Adjacent Arctic Ocean
Ab
cloud absorption
ABCD
doppler wind field analysis using Cartesian coordinate system[CETP]
ABL
atmospheric boundary layer; albedo
ABLE 3A
Arctic Boundary Layer Experiment; first part of third mission in ABLE series
absorp
absorption
AC
Aerospace Corporation; Ackerman & Cox; total accepted counts
Ac
altocumulus clouds; fractional cloud cover
A/C
aircraft
ACARS
ARINC Communications, Addressing and Reporting System
ACE-1
first mission in Aerosol Characterization Experiment
ACRF
atmospheric cloud radiative forcing
ACSYS
Arctic Climate System Study(WCRP)
A/D
analog to digital
ADCP
Acoustic Doppler Current Profiler
addv
addvection
ADEOS-1
first Advanced Earth Observing Satellite(Japan)
ADIFR
angle of attack
ADS
airborne data system(NAILS)
ADT
Alaska Daylight Time; anomalous diffraction theory
Ae
effective sampling area
AEAP
Atmospheric Effects of Aviation Project(NASA)
aeff
effective radius of particle
AEM-2; AEM-B
second Applications Explorer Mission(ERBS)
AERI
Atmospheric Emitted Radiance Interferometer
AEROCE
Atmosphere-Ocean Chemistry Experiment
AES
Atmospheric Environment Service(Canada)
AFB
Air Force Base
AFGL
Air Force Geophysical Laboratory(USAF)
AFGWC
Air Force Global Weather Center
AFIXL; AFIXR
angle of attack
AFOS
Automated Forcasting Operational System; Automation of Field Operations and Services
AFOSR
Air Force Office of Scientific Research
AGASP
Arctic Gas and Aerosol Sampling Program
AGL
above ground level
AGU
American Geophysical Union
AIDJEX
Arctic Ice Dynamics Joint Experiment
AIMR
Airborne Imaging Microwave Radiometer
AIP-3
Algorithm Intercomparison Project(GPCP)
AIR
Atmospheric Instrumentation Research, Inc.; (CSU sonde)
AIRS
Atmospheric Infrared Sounder
AK
Akademik Kurchatov R/V
AL
above cloud layer
Al
aluminum
ALACE
Autonomous Lagranagian Circulation Explorer(float)
AlCu; Acu
altocumulus
ALPHA-1; -2
SRI downward-viewing lidar; upward
ALS
Airborne Lidar System
alt
altitude
alto cu
alto-cumulus cloud
ALWIND
along(with) wind direction
åm
10-9 meter
AM-1
first EOS Satellite; AM Equator crossing time
AMA
Amarillo, TX met station designator
AMC
Atlantic Marine Center
AMEX
Australian Monsoon Experiment
AMI
Advanced Microwave Instrument(ERS-1)
AMIPS
(GLA simulation model)
AMMR-1
Airborne Multichannel Microwave Radiometer-nadir viewing
AMMR-2
AMMR viewing at 45 deg through left window
AMMS
Advanced Microwave Moisture Sounder
AMP
ARGOS Meteorological Platform
AMPR
Advanced Microwave Precipitation Radiometer
AMS
Alternate Mission Scientist; American Meteorological Society
AMSR
Advanced Microwave Scanning Radiometer
AMSU
Advanced Microwave Sounding Unit
AMTEX
Air-Mass Transportation Experiment(Japan)
ANA
Santa Maria airport building designator
AN/APN
(military equipment designator)
ANG
Air National Guard
angl
angle
ANSI
American National Standards Institute
Ant
antenna
AN/TPQ-11
radar designator
AOA
airplane angle of attack
AOC
Aircraft Operations Center
AOML
Atlantic Oceanographic and Meteorological Laboratory(NOAA)
AOSS
airplane angle of sideslip
Ap
antenna area; plate area
APD
avalanche photo-diode
APL
Applied Physics Laboratory
APS
Aerodynamic Particle Sizer(ER-2)
APT
Autonomous Picture Transmission system(DC-8)
AR
Atmospheric Research(company)
Ar
receiver area; lidar telescope effective area
ARAD
(should have been ARAP) Aeronautical Research Associates of Princeton
ARAT
Avion de Recherche Atmospherique(France)
ARC
Ames Research Center(NASA)
ARCHV
archive
ARCS
Atmospheric Radiation and Clouds Station
ARCSS
Arctic System Science(NSF)
ARCSyM
Arctic Regional Climate System Model
ARGOS
(satellite used to telemeter data to shore station[France])
ARINC
Aeronautical Radio, Inc.
ARK
Arkansas, KS met station designator
ARL FRD
Air Resources Laboratory-Forecast Research Development(NOAA)
ARM
Atmospheric Radiation Measurments program(DOE)
ARMAR
Airborne Rain Mapping Radar
ARMCAS
Arctic Radiation, Microphysics, Clouds and Aerosols Study
ARO
(Army research organization)
AROS
Automated Regional Operations System
ARS
Atmospheric Radiance Study
AS
Academy of Sciences(Russia); Aircraft Scientist; Arakawa-Schubert
As; as
altostratus clouds
ASAP
as soon as possible
ASASP
Axially-Scattering Aerosol Spectrometer Probe(PMS)
Asc
ascent
ASCII
American Standard Code for Information Interchange
ASD
Atmospheric Sciences Division(LaRC); Analysis and Simulation Division(AFGL)
ASF
Alaska SAR Facility
AS IAP
Academy of Sciences; Institute of Atmospheric Physics(Russia)
ASL
above sea level
ASM
angular second momentum
ASRC
Atmospheric Sciences Research Center(SUNYA)
ASSP
Aerosol Scattering Spectrometer Probe
AST
Arctic Cloud Experiment Science Team
ASTER
Advanced Spaceborne Thermal Emission and Reflection radiometer
ASTEX
Atlantic Stratocumulus Transition Experiment
ASTRAIA
(NCAR Electra instrument)
AT
(ASTEX R/V); air temperature
ATB
Rosemount temperature sensor
ATC
Air Traffic Control
ATD
Atmosphere Technology Division(NCAR)
ATEX
Atlantic Tropospheric Experiment
ATI
area-time integrals; (designator of sonic anemometer type)
ATKP
(Electra fast response temperature sensor)
ATLAS
(type of buoy for TOPEX/POSEIDON validation)
ATMOS
Atmospheric Trace Molecules Observed by Spectroscopy(JPL)
Atmos. Chem.
Atmospheric Chemistry
Atmos. Environ.
Atmospheric Environment
Atmos. Res.
Atmospheric Research
ATR
(attenuated total reflection switch on ARMAR)
ATr
radar area-time integral
ATRAD
algorithm for adding doubling calculations
ATRF
(Electra reverse flow temperature sensor)
Ats
satellite area-time integral
ATSR/MS
Along-Track Scanning Radiometer and Microwave Sounder (ERS-1)
AUW
Wausau, UT met station designator
AVHRR
Advanced Very High Resolution Radiometer
AVIRIS
Airborne Visible/Infrared Imaging Spectrometer
AVNIR
Advanced Visible and Near-infrared Radiometer
AXBT
Airborne Expendible Bathythermograph
AXCP
Airborne Expendible Current Profiler
AZC, AZF
airplane true heading
AZIM; AZ; azm
azimuth angle


B
Planck function; broken; tethered balloon; integrating filter bandwidth
b
buoyancy
B1
reflectance of cloud at =1
B3
reduced resolution radiance data(ISCCP)
B-23
(U. WA cloud and aerosol research aircraft)
BABA
Balloons Bassee Altitude
BAO
Boulder Atmospheric Observatory
BASE
Beaufort Arctic Storms Experiment
BB
broad band; black body
BBHIR
Broad Bandpass Hemispheric IR Radiometer
BBHSR
Broad Bandpass Hemispheric Solar Radiometer
BBIR
broadband IR
BBR
(ASTEX UKC-130 instrument)
BBSS
Balloon Bourne Sounding System
B.C.
tethered balloon measurments
BC
cloud emission
Bcld
Planck function of the cirrus layer temperature
BCS
backscatter cross section
BDIFR
angle of sideslip
BE
measured radiance
BEN
(a type of ship log on ASTEX R/V Le Suroit)
BER
bit error rate
BFIXB; BFIXT
angle of sideslip
BL
boundary layer
BLW
below
BMAP
Background Measurement and Analysis Program
BMO
British Meteorological Office
BNL
Brookhaven National Laroratory
BOMEX
Barbados Oceanographic and Meteorological Experiment
Bound. Lay. Meteor.
Boundary-Layer Meteorology
BOX
Functional Box Counting cloud retrival algorithm
BPI
bytes per inch
BPRT
radiometric surface temperature
BPYR1; TPYR1
visible radiation
BPYRG; TPYRG
IR radiation
BR
briefing room; region of broken stratocumulus clouds
BRDF
bi-directional reflectance distribution function
BS
surface emission
BSCAT
(related to EOC viewing angle)
BSHR MGO
(ASTEX R/V LeSuroit engine type)
BT
brightness temperature
B(T)
Planck function at temperature T
BTD
brightness temperature difference
BTDIF
(related to MAS spectral channels)
Bull. Amer. Met. Soc.
Bulletin of the American Meteorological Society
BUV; TUV
ultraviolet radiation
BW
bandwidth


C
member of Cirrus Working Group; centigrade; most of IFA area; cloud amount; average speed of propogation; calibration constant
c
speed of light; particle concentration
C1
gridded cloud product(ISCCP)
C2
climatological summary product(ISCCP)
C5; C6; CI175
(equivalent sphere ice particle distributions)
C2H4
ethene
C4
Center for Clouds, Chemistry and Climate(SIO)
C7F14
perfluoromethylchlohexane(cyclohexane)
C20
ISCCP 20m/20m hexagonal crystal model
C-130Q
(NCAR airplane)
C-131A
(University of Washington airplane)
Ca++
calcium ion
CAC
Climate Analysis Center(NOAA)
CADC
Central Air Data Computer(NASA DC-8)
CAGES
(Canadian hydrological experiment in Mackenzie river basin)
calc
calculated
CALS
Cloud and Aerosol Lidar System
Cal Tech
California Institute of Technology
CAM
Centre d'Aeronautique Meteorologique(France)
CAMAC
computer-automated measurment and control(component of VIRL)
CAP
cloud-atmospheric parameter
CAPE
convective available potential energy
CaPE
Convection and Precipitation/Electrification experiment
CAPPI
Constant-Altitude Plan Position Indicator
CAR
Cloud Absorption Radiometer
CARAFE
Cloud, Aerosol and Radiation Arctic Field Experiment
CART
Cloud and Atmospheric Radiation Testbed facility
CARSS
Center for Atmospheric and Remote Sounding Studies
Cb; CB
cumulonimbus
C Band Scatt
C-Band Scatterometer
CBL
cloud boundary layer
Cc
cirrocumulus
CCAR
Colorado Center for Astrodynamics Research(U. CO-Boulder)
CCC
(organization conducting atmospheric modeling)
CCCL
(POINT SUR instrument on MS; measures surface wind, T and RH)
CCD
charged-couple device
CCl4
carbon tetrachloride
CCM
continuous core measurments; Centre de Meteorologie Marine(France); organization conducting atmospheric modeling)
CCM1, 3
Community Climate Model; versions(NCAR)
CCN
cloud condensation nuclei
CCNC
(ASTEX UKC-130 instrument)
cctv
closed circuit television
Cd
cadmium
CDF
common data format
CDIU
COARE Data Information Unit
CDR
circular depolarization ratio
CD-ROM
compact disk-read only memory
CDT
Central Daylight Time
CE
cloudiness element
CEAREX
Coordinated Eastern Arctic Experiment
CEI
cloudtop entrainment instability
CENCAL
Central California Oceanographic Cooperative
CEPEX
Central Equatorial Pacific Experiment
CERES
Clouds and the Earth's Radient Energy System(LaRC)
CES
Committee on Earth Sciences
C.E.T.P.
Centre d'études des Environnements Terrestre et Planétaire(France)
CFA
cloud fractional absorptance
CFADs
Contoured Frequency by Altitude Diagrams
CFC
chlorofluorocarbons
CFD
continuous flow diffusion
CFR
Centre def Faibles Radioactivités(French)
CG
(description for LIP lightning locations)
Cg
total surface cloudiness
CH
(ASTEX R/V); high cloud type code
Ch
channel
CH3CCl3
methyl chloroform
CH4
methane
chem
chemistry
chn
channel
Ci; CI
cirrus clouds
CIDS
CEPEX Integrated Data System
CIFKU
conditional instability of the first kind upside-down
CIIFO
CIRRUS I IFO(FIRE I)
CIMMS
Cooperative Institute for Mesoscale Meteorological Studies(University of Oklahoma)
CIMSS
Cooperative Institute for Meteorological Satellite Studies(U. Wisc.-Madison)
CIPS
continuous ice particle sampler
CIRES
Cooperative Institute for Research in Environmental Sciences(University of Colorado)
CIRRUS I
Cirrus IFO-I(Wisconsin 1986)
CIRRUS II
Cirrus IFO-II(Kansas 1991)
CIS
Cryogenic Interferometer Spectrometer
CISK
conditional instability of the second kind
CiSt
cirrostratus clouds
CIT
California Institute of Technology
CL
low cloud type code
Cl
chlorine
CLARET I & II
Cloud Lidar and Radar Exploratory Tests
CLASS
Cross-Chain Loran Atmospheric Sounding System
CLAT
aircraft latitude(LORAN)
CLAVR
Clouds from AVHRR
CLDRADI
(GFDL GCM)
clds
clouds
CLDSTATS
(WPL program for determining echo boundaries)
CLIVAR
Climate Variability and Predictability Program(WCRP)
CLONG
aircraft longitude(LORAN)
cloudtop saw t
cloudtop saw tooth
CLR
cloud-free subframes
CLS
Cloud Lidar System(ER-2)
CM
middle cloud type code
cm
centimeter(10-2)
CMATRIX
THIR cloud product
CMM
Centre de Meteorologie Marine(France)
CMS
Centre de Meteorologie Spatiale(France); College of Marine Studies(U. of Deleware)
CN
condensation nuclei
Cn
refractive index structure function parameter
CNES
Centre National d'Etudes Spatiales(France)
CNET
Centre National Etude des Telecommunications(France)
CNRM
Centre National de Recherche Meteorologique(France)
CNRS
Centre National de Recherche Scientifique(France)
CNSA
Centro Nacional de Sanidad Ambiental(Spain)
CO
carbon monoxide
CO2
carbon dioxide
COADS
Comprehensive Oceanic and Atmospheric Data Set
COARE
Coupled Ocean-Atmosphere Response Experiment
coef
coefficient
COF
Coffeyville,KS met station designator
COHMEX
Cooperative Huntsville Meteorological Experiment(field experiment)
Co-I
co-investigator
COMSAT
Commercial Satellite Corporation
conc
concentration
CONCNC
aerosol concentrations
cond
condition
conf
conference; confirmed
contin
continuous
COPLAN
(doppler radar analysis in a cylindrical coordinate system[CETP])
copol
copolarized
COR
cold optics radiometer
cor
correlation
corr
correlation
COS
Cloud Observing System(ASTEX)
COSSA
Commonwealth Office of Space Science and Applications(CSIRO)
cov
covariance
CP
Conference Publication(NASA); center point; common point
Cp
specific heat at constant pressure
cP, mT
(air mass descriptor)
CP-2
(type of radar used during CaPE)
CPE
Central Pennsylvania Experiment
CPU
central processing unit
CR-1
(cryogenic hygrometer model)
CRAY YMP
(large, fast Cray Research computer model)
CRF
cloud radiative forcing
CRL
(T/C organization having radar on DC-8)
CRM
cloud resolving model
cross pol
cross polarization
CRPE
Centre de Recherches en Physiques de l'Environment(France)
CRS
Center de la Recherche Scientifique(France)
CS
ISCCP cirrostratus hexagonal crystal model; cross section; Calahan & Snider
CS
cloud fractional coverage from satellite
Cs
cirrostratus
CSASP
(Marine Stratocumulus particle spectrometer)(PMS)
CSC
Computer Sciences Corporation
CSH
convective stratiform heating
CSI
Campbell Scientific, Inc.
CSIRO
Comonwealth Scientific and Industrial Research Organization(Australia)
CST
Central Standard Time
CSU/PO
Colorado State University Project Office
CT2
structure function of temperature fluctuations
CTBL
cloud-topped boundary layer
CTD
Conductivity-Temperature-Depth Profiler
CTEI
cloud-top entrainment instability
Ctr
center
CTT
cloud top temperature
CU
ISCCP cirrus uncinus hexagonal crystal model
Cu
cumulus; copper; cirrouncinus
CuCl2
copper chloride
CUSBL
cumulus under stratocumulus boundary layer
CV-580
University of Washington airplane; Canadian National Research Council airplane
CVI
counterflow virtual impactor
CW
center wavelength/wave number
CX
pixel level cloud product(ISCCP)
CY
calendar year


D
lidar off-zenith pointing; diameter; descending; distance between plates; bouyancy reversal parameter; GOES VIS counts; cloud cell diameter; particle long dimension
D*
detectivity
D1
gridded cloud product with revised algorithm(ISCCP)
D1
transmittance of cloud at =1
De; Dm
mean droplet diameter
Dmax
largest ice particle dimension
Dn
characteristic diameter of the crystal distribution
DAAC
Distributed Active Archive Center
DAB-UL
dual-polarization and backscatter-unattended LIDAR
DADS
Data Acquisition and Distribution System(NASA DC-8)
Daedalus
(Scanning, Visible and IR(window) Imaging Radiometer[ER-2])
DAMTP
(Cambridge U. organization)
DAO
Data Assimilation Office(GSFC)
DAS
data acquisition system
DAT
digital archival tape
db
decibel
DBARM
equivalent melted diameter
DBMS
data base management system
DBZ
(decibel)
DC-8
(NASA ARC high altitude research aircraft)
DCR
Dual Channel Microwave Radiometer
DDA
discrete dipole approximation
DDMS
Deputy Daily Mission Scientist
DDR
data description record
DECnet
Digital Equipment Corporation network
deg
degree
DEOF
double end of file
Dept.
department
DESC
descent
DET
detector
DF
direction finding
DFBS
(model with microphysics specific to marine stratocumulus clouds)
DFO
Department of Fisheries and Oceans(Canada)
DHG
double Henyey-Greenstein function
DHL
(company specializing in express delivery service)
Dia
diameter
DIAL
Differential Absorption Lidar
DIFACS
Digital Facsimile workstation
DIR
downwelling IR
DISORT
discrete ordinate method
DL
Doppler Lidar
DLR
Deuthsche Forschungsanstalt für Luft-und Raumfahrt(Germany)
DM
Data Manager; member of Data Management Working Group
DMA
Differential Mobility Analyzer
DMN
Direction de la Meteorologie Nationale(France)
DMPL
Depolarization Micropulse Lidar
DMPS
Differential Mobility Particle Sizer
DMS
dimethyl sulfide; Deputy Mission Scientist; Daily Mission Scientist
DMSO
dimethyl sulfoxide
DMSP
Defense Meteorological Satellite Program(DOD)
DMWG
Data Management Working Group
DN
down
D0
day zero
DOC
Department of Commerce
DOD
Department of Defense
DODR
airplane drift angle
DOE
Department of Energy
DOGS
airplane ground speed
Domsat
Domestic Satellite
Dop
doppler
DORADE
(ARMAR data type for T/C)
DP
Drafting Panel
Dp
particle diameter
DPB
dewpoint temperature
DPBC; DPTC
Electra dewpoint hygrometers(bottom and top)
DPL
Dual-polarization Lidar
DRAKKAR
(2-channel vertically pointing MW radiometer[CaPE])
DRI
Desert Research Institute(University of Nevada)
DRT
Del Rio, TX met station designator
DS
downwelling solar
DU
Drexel University
DUNDEE
Down Under Doppler and Electricity Equipment
DWIPS
Digital Weather Imaging Processing System
DX
pixel level cloud product with revised algorithm(ISCCP)
DY
day
DYCOMS
Dynamics and Chemistry of Marine Stratocumulus
Dz
drizzle


E
Eastern part of IFA area; water vapor flux; incomming irradiance
(E)
evaluation data; for model evaluation
E
spectral solar constant
Ecld
emissivity if the cloud layer
Eeff
effective emissivity
Ei
collimated irradiance
Eo
energy of transmitted pulse
E(r)
backscattered power
e
saturated vapor pressure
EA
extended area
EC
elemental carbon
ECHAM-3
(a coupled global ocean-atmosphere model[MPI])
ECL
(ARMAR electronic component)
ECLIPS
Experimental Cloud Lidar Pilot Study
ECMWF
European Centre for Medium-range Weather Forecasts
EDIS
Environmental Data Information Service(NOAA)
EDOP
ER-2 Doppler Radar
EDP
Environmental Definition Program
EDT
Eastern Daylight Time
EDX
energy-dispersive x-ray
EERC
(ASTEX organization)
EERM
Etablissement d'Etudes et de Recherches Meteorologiques(France)
E G & G
Edgerton, Germeshausen and Grier
EHP
equivalent horsepower
EI
entrainment instability criterion
ei
cloud mean emissivity
EL
Eppley Laboratories; Electra(NCAR); elevation
ELDORA
Electra Doppler Radar
ELP
El Paso, TX met station designator
EM
enhanced monitoring
EMA
enhanced monitoring array
EMD
(NOAA R/V Oceanus engine type)
EMES
Earth Moniroring Educational System
EMEX
Equatorial Mesoscale Experiment
EMP
enhanced monitoring period
ENE
East-North-East
ENR
(describes ARMAR noise source)
ENSO
El Niño Southern Oscillation
ENT
entropy
EOC; EO-cam
Electro Optics camera(ER-2)
EOCT
Electro-optical Camera(TSEC)(ER-2)
EOF
end of file(single); empirical othogonal function analysis
EOMET
Electro-Optics Meteorology program(NRL/NOSC)
EOS
Earth Observing System(NASA)
EOS-AM(AM-1)
first launch in NASA EOS satellite series(mid-1998); morning equator crossings(descending)
EOSDIS
Earth Observing System Data and Information System
EOSP
Earth Observing Scanning Polarimeter
EOS-PM
second launch in NASA EOS satellite series(late 2000); afternoon equator crossings(ascending)
EPOCS
Eastern Pacific Ocean Climate Study
ER
extended range
ERB
Earth Radiation Budget instrument(NIMBUS 6 & 7)
ERBE
Earth Radiation Budget Experiment(ERBS)(LaRC)
ERBS
Earth Radiation Budget Satellite(NASA)
ER-2
NASA Ames high altitude aircraft; Extended Resources-2
ERC
(NOAA organization)
ERL
Environmental Research Laboratory(NOAA)
EROS
Earth Resources Observation System
ERS-1
first European Remote Sensing Satellite
ESA
European Space Agency
ESG
Empirical Study Group(NOAA)
ESMR
Electronically Scanned Microwave Radiometer
ESS
University of Essex(UK)
ESTAR
Electrically Scanning Thinned Array Radiometer
ESTEC
European Space Research and Space Technology Center
ET
extended time
ETA
estimated time of arrival
ETH
Eidgenossische Technische Hochschule(Switzerland)
ETL
Environmental Technology Laboratory(NOAA)
ETLA
Extended Time Limited Area
ETO
extended time observation
EUCREX
European Cloud and Radiation Experiment
EUROTRAC
European Experiment on Transport and Transformation of Environmentally Relevant Trace Constituents in the Trosposphere over Europe
EVAD
(analysis of T/C shipborne radar data to reveal kinematic, fluxes and latent heat distribution)
exp; expt
experiment
Ez
(related to cloud amount)


F-F
(EDOP system)
f
viewing azimuth angle; cloud fraction; Coriolis parameter; fraction of pixel covered by cloud
f1
(coefficient depending on particle size distribution)
F-8, 10, 11, 12
DMSP Satellite designations
(F)
for forcing at boundaries
FAA
Federal Aviation Administration
FAPMO
(bathythermograph winch)
FARS
Facility for Atmospheric Remote Sensing(U. of Utah)
FASCOD3(or III)
(line-by-line radiance/transmittance model developed by AFGL--used to calculate cloud conditions)
FASINEX
Frontal Air-Sea Interaction Experiment
FAST
(forward/aft scanning mode)
fax
facsimile
FCA
FIRE Central Archive
FCC
Federal Communications Commission
FCST
Federal Council for Science and Technology
FD
finite-difference model
FDDA
Four Dimensional Data Assimilation
Fe
iron
FFSP
(Knollenberg 1-D probe)
FFT
Fast Fourier Transform
FIAMS
Flinders Institute for Atmospheric and Marine Studies
FIFE
First ISLSCP Field Experiment
FIR
IR flux
FIRE
First ISCCP Regional Experiment
FIRE 86
first FIRE Cirrus field experiment
FIRE 87
FIRE I Marine Stratocumulus IFO
FIRE 91
second FIRE Cirrus field experiment
FIRE 93
TOGA COARE; FIRE Pilot Tropical Cirrus Experiment
FIRE I
FIRE, phase I(1984-1989)
FIRE II
FIRE, phase II(1990-1994)
FIRE III
Fire, phase III(1995-??)
FIRE IFO II
second FIRE Cirrus field experiment
FIRE MS
FIRE Marine Stratus
FIRE Stratos
Marine Stratocumulus IFO(California 1987)
FL
flight leg
FL
large scale eddy latent heat flux
FLORENCE
(sea-surface flux model[Météo-France])
FLT
flight
FM
frequency modulation; flow meter
F & M
FOKKER F-27 & Merlin IV; (ASTEX airplanes)
FMC
Fort McCoy, WI met station identifier
FM-CW
frequency modulated- continuous wave
FMO
Flatland Meteorological Observatory
FMT
convective flux
fnct
function
FNOC
Fleet Numerical Oceanography Center
FNT
Flint, MI met station identifier
FOGS
(ARC grating spectrometer)
FOKKER
(Dutch airplane manufacturer)
forc
forcing
FORTRAN
formula translation; IBM scientific programming language
FOV
field of view
FP
final point
Fp
reflected flux
Fr
pulse repetition frequency
fr
from
fra
fractal(cu cloud structure)
freq
frequency
FS
full scale
FS
small scale eddy latent heat flux
FSL
Forecast Systems Laboratories(NOAA)
FSM
Federated State of Micronesia
Fsol
downward solar radiation
FSSP300
PMS Forward Scattering Spectrometer Probe; (cloud droplets)
FST
FIRE Science Team
FSET
FIRE Science Experiment Team
FSU
Florida State University
FT
free troposphere
FT/BL
(description of trace gas and aerosol fluxes and conversion rates)
FTIR
fourier transform interferometer radiometer
ftp
file transfer protocol
FTS
fourier transform spectrometer
FWHH
full width half height
FWHM
full width; half maximum
FWVS
(ASTEX UKC-130 instrument)
FYIB
(NPS satellite imager[ASTEX])


G
gain
g
gravitational acceleration; asymmetry factor
GaAs
gallium arsenide
GAC
global area coverage(AVHRR)
galb
surface albedo
GALT
airplane GPS altitude
GAMP
Global Atmospheric Measurments Program(ATD)
GAPEX
Ground-based Atmospheric Profiling Experiment
GARP
Global Atmospheric Research Program
GASP
Global Atmospheric Sampling Program
GATE
GARP Atlantic Tropical Experiment
GCE 2D
convective scale model(GSFC)
GCEM
Goddard Cumulus Ensemble model
GCM
global climate model; general circulation model
GCSS
GEWEX Cloud System Studies
GDR
(TOPEX instrument)
GE
General Electric
Gen
generator
GenPlot
(general visualization software tool)
GEO
geosynchronous
Geophys. Res. Lett.
Geophysical Research Letters
GEOS
GSFC EOS data assimilation system
GEWEX
Global Energy and Water Cycle Experiment
GFDL
Geophysical Fluid Dynamics Laboratory(Princeton Univ.)
GGG
Midland, TX met station designator
GHIS
Geostationary High-resolution Interferometer Sounder
Ghz
gigahertz(10+9)
GI
Geophysical Institute(University of Alaska-Fairbanks)
GIF
graphics interchange format
GISS
Goddard Institute of Space Studies
GL
gray level
GLA
Goddard Laboratory for Atmospheres(GSFC)
GLAS
Geoscience Laser Altimeter System
GLAT
airplane GPS latitude
GLDV
gray level difference vector
GLI
Global Imager
GLON
airplane GPS longitude
GMS
Geostationary Meteorological Satellite(Japan)
GMT
Greenwich Mean Time
GOALS
Global Ocean-Atmosphere-Land System
GOES
Geostationary Operational Environmental Satellite(NOAA)
GOES-NEXT
next generation GOES
GOFIRE
(NCDS FORTRAN program)
GPCP
Global Precipitation Climatology Project
GPI
GOES Precipitation Index
GPS
Global Positioning System
GRB
Green Bay, WI met station identifier
GRS-1
(satellite)
GRT
(R/V Valdiva dimension)
GSFC
Goddard Space Flight Center(NASA)
GSO
Graduate School of Oceanography(URI)
GTE
Global Troposphere Experiment
GTRI
Georgia Tech Research Institute
GTS
WWW Global Telecommunications System(WMO)
GUM
Guam met station site designator


H
cloud depth; hydrogen; differential heating in zonal direction;sensible heat flux; shear layer depth
H()
observed downwelling IR irradiance
h
hour; moist static energy; cloud thickness
h*
saturation moist static energy
H2O
water
H2O2
peroxide
H2SO4
sulfuric acid
HART
Height Area Rain Threshold
HBR
(?,KS met station designator)
HBTM
Hybrid Bispectral Threshold Method
HC
hydrocarbons
HDDR
(magnetic tape)
HDF
hierarchical data format
HDF/netCDF
hierarchical data format/net common data format
He
helium
HEA
high energy approximation
HF
high frequency
Hfil
HIS simulated filtered radiance of ERBE
HFOVR
Hemispherical Field-of-View Radiometer
HFS
hierarchical file system
HG7
Henyey-Greenstein approximation with assumed asymmetry factor of 0.7; phase functions
HGM; HGME
geometric altitude(low and high)
HH
hydrometeor heating; ARMAR polarization mode
HHMMSS
hours, minutes, seconds(each expressed by 2 digits)
HH-VV
(ARMAR dual polarization mode)
HIR
Honiara, SI met station site designator
HIRES
high resolution
HIRS2
High Resolution Infrared Radiation Sounder; part of TOVS
HIS
High-resolution Interferometric Sounder(ER-2)
HITRAN
(database of gas absorption characteristics)
Hi Vol
high volumn
HL
cloud base height
HNO3
nitric acid
HOAG
Honiara Aircraft Operations Group
HOH
water
HOM
homogeneity
horiz
horizontal
h Pa
hecta Pascals
Hq
headquarters
HRD
Hurricane Research Division(NOAA)
HRPT
High Resolution Picture Transmission(AVHRR)
HRZ
hour GMT
HS
Hu and Stevens
HSRL
High Spectral Resolution Lidar
HTI
height-time
Htr
heater
hum
humidity
Hunfil
HIS simulated unfiltered radiance of ERBE
HV
(ARMAR dual polarization mode); (type of filter)
hz
Hertz


I
cloud radiance; detector current
(I)
input data; for model initialization
I(, )
azimuthally average monochronomatic intensity
I
HIS measured radiance
Io
detector current with path length set to zero
IAEA
International Atomic Energy Agency(UN)
IAG
Interagency Group
IAMAP
International Association of Meteorology and Atmospheric Physics(ICSU)
IAP
Institute of Atmospheric Physics(Russia)
IAS
indicated air speed
IBM-PC
International Business Machines-Personal Computer
i/c
icing condition
IC
icing condition; intercomparison; ice crystals
I()
observed spectral radiance at wavenumber
Ic
opaque cloud radiance
ICAA
(designation for ASTEX turbulence/sounding intercomparison variant mission)
ICAO
International Civil Aviation Organization
ICAS
International Committee for Atmospheric Sciences(FCST)
ICCP
Intyernational Cloud Climatology Program
ICDG
Institute of Chemistry and Dynamics of the Geosphere
ICE
International Cirrus Experiment
Ice Col
Ice Column model of Takano/Liou
Ice XAL
ice crystal
Ici
radiance at cloud temperature
Icl
clear sky radiance
ICR
Ice Crystal Replicator
ICRCCM
Intercomparison of Radiation Codes in Climate Models
ICSU
International Council of Scientific Unions
ICT
radiometric air temperature
ICTP
International Center for Theoretical Physics(IAEA-UNESCO)
ID
identification; ISCCP water droplet model; scene identification
IDL
Interactive Data Language
IEEE
Institute for Electrical and Electronics Engineers
IFA
intensive flux array
IFO
intensive field observations
IFOV
instantaneous field of view
IFN
ice forming nuclei
IFP
intensive field program
IFR
instrument flight rules
IFREMER
Institut Francais de Rechercher Sur la Mer(France)
IGAC
International Global Atmospheric Chemistry Program
IGBP
International Geosphere-Biosphere Program
IGDR
(TOPEX instrument)
IGN
Institut Geographique Nationale(France)
IILs
intermediate inversion layers
ILAT
airplane INS latitude
ILON
airplane INS longitude
IMC
ice mass content
IMET
Improved Meteorological Instrumentation(WHOI)
imf
ice mass flux
IMG
Interferometric Monitor of Greenhouse Gases
IN
ice nuclei
INAA
Integrated Neutron Activation Analysis
include
including
INDOEX
Indian Ocean Experiment
INE
inertial navigation equipment
InGaAs
indium gallium arsenide
INL
International Falls, MN met station identifier
INMARSAT
International Marine Satellite Organization
INMG
National Institute of Meteorology and Geophysics(Portugal)
INS
inertial navigation system; insulation
inst
instrument
INSU
Institut National des Sciences de l'Univers(France)
integ
integration
Internet
Worldwide computer network
Int. J. Climate
International Journal of Climatology
inv
inversion
I/O
input/output
IOEB
(SHEBA buoy)
IOP
intensive observing period
IOS
Institute of Ocean Sciences(Canada)
IP
Implementation Plan; initial point
Ipa()
particulate backscatter phase function
IPITCH
airplane IRS pitch angle
IR
infrared
IRAMMP
(ASTEX instrument)
IRB; IRT
infrared radiation
IRF
instantaneous radiative flux
IRIS
Interactive Radar Information System; Infrared Interferometer Spectrometer(Nimbus 4)
IROLL
airplane IRS roll angle
IRRAMP
Infrared Analysis, Measurments and Modeling Program(Navy)
IRS
inertial reference system
IRST
Infrared Search and Track system(Navy)
IRT
Infrared Thermometer
Is; Isi
cloud-free radiance
IS # 3
insitu airplane number designation
ISCCP
International Satellite Cloud Climatology Project
ISLSCP
International Satellite Land Surface Climatology Project
ISO
isolation
ISOT
International Scientific Oversight Team
ISR
Infrared Scanning Radiometer
ISS
Integrated Sounding System(NCAR)
ITCZ
Inter-tropical Convergence Zone
ITHDG
airplane IRS true heading
IUGG
International Union of Geology and Geophysics(ICSU)
IVEW
airplane IRS East-West ground speed
IVICS
interactive visual image classification system
IVNS
airplane IRS North-South ground speed
IW
ice water
IWC
ice water content
IWP
ice water path


J
joule
J. Appl. Meteor.; JAM
Journal of Applied Meteorology
JASIN
Joint Air-Sea Interaction Experiment
J. Atmos. Sci.; JAS
Journal of the Atmospheric Sciences
J. Atmos. Oceanic Technol.
Journal of Atmospheric and Oceanic Technology
J. Clim. Appl. Meteor.; JCAM
Journal of Climate and Applied Meteorology
J. Climate
Journal of Climate
JD
Julian day
JERS-1
first Japanese Earth Remote-sensing Satellite
JGOFS
Joint Global Ocean Flux Study
J. Geophy. Res.; JGR
Journal of Geophysical Research
JIC
Joint Ice Center
JLE
(R/V Akademik Kurchatov navigation system type)
JMA
Japan Meteorological Agency
JPL
Jet Propulsion Laboratory(NASA)
J W
Johnson-Williams


K
Kelvin; potassium; kinetic energy flux; Boltzmann's constant
k
coefficient of conductivity; relative sensitivity; absorption coefficient
ki
greybody mass absorption coefficient
K+
potassium ion
K & S
Kipp & Sonn(Germany)
KA
King Air airplane
Ka-band; K-band
8.6 mm/35 Ghz wavelength radar
kc
cloud backscatter/extinction ratio
KCARTCC
Kansas City Air Regional Traffic Control Center
KE
kinetic energy
kg
kilogram(10+3)
KH
Kelvin-Helmholtz(waves)
kHz
kilohertz(10+3)
KITE
Kuiper IR Technology Experiment
km
kilometer(10+3)
KOSMOS
(Russian meteorological satellite)
K-R
(related to T/C ARMAR)
KSHLCNV
(GFDL GCM)
KTAS
knots air speed
kW
kilowatt(10+3)
KVG
Kavieng, PNG met station site designation


L
characteristic horizontal scale of cloud elements; cloud height; liquid water content; landing time; length; liquid water path; spectral radiance; latent heat of consendation
l
liter
L-
Lyman-Alpha
L
latent heat of vaporization
LA
limited area; Laboratoire d'Aerologie(France)
LAC
local area coverage(AVHRR)
LAG
lagrangian
LAMPS
Limited-Area Mesoscale Prediction System
LAN
local area network
LANDSAT
(NASA Earth observing satellite series)
LANL
Los Alamos National Laboratory(DOE)
LAOI
Laboratory of Atmosphere and Oceanology Institute(Russia)
LaRC
Langley Research Center(NASA)
LAS-X
(custom PMS particle counter for 0.15-7.0 åm)
lat
latitude
LATC; LATF
airplane latitude
LBA
Large-scale Land Processes in the Basin of the Amazon
LBTM
layer bispectral threshold method
LCL
lifting condensation level
LDR
linear depolarization ratio
LE
latent heat flux
LEADEX
Lead Experiment
Least Sq St Dev
least squares standard deviation
LED
light emitting diode
LERTS
Laboratoire d'Etudes et Recherches en Teledetection Spatial(France)
LES
large eddy simulation model
LF
lower fuselage radar
LGC
nadir IR radiation
LIDAR
light detection and ranging
LIMA
Laboratoire d'Instrumentation Meteorologique Aeroportee(France)
LIP
Lightning Instrument Package
LIP 90
(independent component of LIP
Liq
liquid
LIRAD