Comments on: NOAA Gridded Data

By: Warwick Hughes

Warwick Hughes — Sun, 25 Mar 2007 17:34:05 +0000

Re 29 Peter, the short answer to your question, “Does GHCN get much of its data from CRU?”, is no.
From its inception in the early 1990′s GHCN sourced their data from National Met. orgs or collections by various researchers. Surely the whole point of GHCN was for NOAA to do an alternative to Jones et al 1986 with their own methodology. All that said, I assume that if NOAA had asked CRU for anything, it would have been given, such as this 19C ex Russian Imperial data from Sitka AK ref to in a later thread.

Re 34, I agree Rod.

By: Peter D. Tillman

Peter D. Tillman — Sat, 24 Mar 2007 00:22:00 +0000

Re: New acronym list

Thanks very much, guys. Very helpful.

Cheers — Pete Tillman

By: Hans Erren

Hans Erren — Sat, 24 Mar 2007 00:08:30 +0000

re 33:

FUA Frequenly Used Acronyms

By: Rod

Rod — Fri, 23 Mar 2007 22:10:04 +0000

CRU____________Climate Research Unit of the Hadley Centre

I think this one needs correcting. CRU and Hadley Centre are two different entities. The CRU is the Climate Research Unit at the University of East Anglia – which is just on the outskirts of Norwich, Norfolk. The Hadley Centre is the Hadley Centre for Climate Prediction and Research and is part of the Met Office and is based in Exeter, Devon.

By: JerryB

JerryB — Fri, 23 Mar 2007 21:23:21 +0000

I suspect the new page title would catch eyes more readily
if the first word was abbreviations, or abbreviations/acronyms,
rather than the word commonly.

Such as:

Abbreviations/acronyms commonly used on this blog

YMMV

By: Gerald Browning

Gerald Browning — Fri, 23 Mar 2007 20:58:57 +0000

Willis,

An unbelievable effort! And thanks to John A for posting the list
on the sidebar!

Jerry

By: John A

John A — Fri, 23 Mar 2007 20:10:17 +0000

I've copied the acronyms provided by Willis to a new page, so we don't lose track of them. It's listed in the Pages box on the left hand column of this blog as "Common Acronyms used on this blog"

By: David Duff

David Duff — Fri, 23 Mar 2007 19:44:49 +0000

I have been away but am now returned to find my modest suggestion more than adequately fulfilled. Thanks everyone, especially Willis who should now consider himself covered in kisses! If that is likely to cause some discomfort, then lay back and think of England (or America, or where-ever), but anyway, accept my very grateful thanks.

By: Peter Pollock

Peter Pollock — Fri, 23 Mar 2007 05:19:30 +0000

Re #4:

Here’s a comparison (annual anomaly) of raw and adjusted GHCN v2 for Tarko-Sale. Why does the adjustment lower values in the 1930s and early 40s – I thought that this was supposed to be adjusting for urban heat islands and such, but this adjustment is doing the opposite. This is getting very tiresome.

Steve,

Does GHCN get much of its data from CRU? Take a look at the corrections for the CRUTEM3 dataset: “The most common reason for a station needing adjustment is a site move in the 1940-60 period. The earlier site tends to have been warmer than the later one ‘€” as the move is often to an out of town airport. So the adjustments are mainly negative, because the earlier record (in the town/city) needs to be reduced [Jones et al., 1985, Jones et al., 1986].” (page 6)

Regarding the UHI adjustment: “a 1Ïƒ value of 0.0055C/decade, starting in 1900. Recent research suggests that this value is reasonable, or possibly a little conservative [Parker, 2004, Peterson, 2004, Peterson & Owen, 2005]. The same value is used over the whole land surface, and it is one-sided: recent temperatures may be too high due to urbanisation, but they will not be too low.” (page 11)

And of overall interest: “For some stations both the adjusted and unadjusted time-series are archived at CRU and so the adjustments that have been made are known [Jones et al., 1985, Jones et al., 1986, Vincent & Gullet, 1999], but for most stations only a single series is archived, so any adjustments that might have been made (e.g. by National Met. services or individual scientists) are unknown.” (page 6)
http://hadobs.metoffice.com/crutem3/HadCRUT3_accepted.pdf

Peter

(Howdy dedmod.)

By: Willis Eschenbach

Willis Eschenbach — Thu, 22 Mar 2007 23:24:51 +0000

John B., thanks for the link to the excellent acronym site. While it is useful, I’m creating a more specialized database.

The problem is twofold. One, as pointed out by bernie, is that there are often dozens of meanings for the same acronym. A beginner will not necessarily be able to choose the right one.

A second problem is that this site commonly uses a number of specialized acronyms and expressions which are not on their list, such as TGGWS, DLW, M&M, HadCRUT, RC, Mg/Ca, SAR, EEP, MBH98, Hockey Team, JJA, NATL, Mannomatic, dO18, Sv, CVM, CRUTEM, Climax, WDCP, and the like. For example, there are no less than 198 definitions of RC on the acronym site, but none of them refers to the common usage here, which is the RealClimate web site.

In any case, here’s the latest version. Corrections and additions gladly accepted.

14C, 12C_______Isotopes of Carbon 4AR____________Fourth Assessment Report (IPCC) AAO____________Antarctic Oscillation ABD____________Age Band Decomposition (tree ring standardisation method) AC1____________Lag-one autocorrelation ACE____________Accumulated Cyclone Energy ACR____________Atlantic Cylclogensis Region (cyclones) AFAICT_________As far as I can tell … AFAIK__________As far as I know … AGCM___________Atmospheric General Circulation Model AGG____________Anthropogenic Greenhouse Gas AGU____________American Geophysical Union AGW____________Anthropogenic Global Warming AIT____________An Inconvenient Truth (TV documentary) AMIP___________Atmospheric Model Intercomparison Project AO_____________Arctic Oscillation AOGCM__________Atmospheric/Ocean General Circulation Model AR4____________Fourth Assessment Report (IPCC) ARIMA__________Auto Regressive Integrated Moving Average model or process ARMA___________Auto Regressive Moving Average model or process ATL____________Atlantic Atm____________Atmosphere, atmospheric AU_____________Astronomical Unit (average distance of the Earth from the Sun) AVHRR__________Advanced Very High Resolution Radiometers BADC___________British Atmospheric Data Centre BAU____________"Business-as-Usual", IPCC scenario BC_____________Black Carbon (climate forcing) BE_____________Baroclinically Enhanced (cyclones) BEST___________Bivariate ENSO Timeseries Bin-And-Pin____Dividing data into bins, and then pinning the endpoints when averaging BTW____________By the way … CA_____________ClimateAudit website CAR____________Caribbean SST Index CC_____________Carbon Credit CC_____________Climate Change CCN____________Cloud Condensation Nuclei CDIAC__________Carbon Dioxide Information Analysis Center CFC____________chlorofluorocarbon, e.g., ClCF3 CH4____________Methane CI, 95%CI______Confidence Interval, 95% Confidence Interval Climax_________Cosmic ray detector in Climax, Colorado CMAP___________Climate Modeling, Analysis, and Prediction study CME____________Coronal Mass Ejection (solar phenomenon) CMIP___________Coupled Model Intercomparison Project CO ____________Carbon Monoxide ( Poison) CO2____________Carbon Dioxide CoP____________Climate of the Past CP_____________Cloud top pressure CPC____________National Weather Service Climate Prediction Center (US) CPSST__________Cross Product Sea Surface Temperature CRU____________Climate Research Unit of the Hadley Centre CRUTEM_________Land Temperature Record from CRU CSIRO__________Commonwealth Scientific and Industrial Research Organisation (Australia) CSM____________NCAR GCM, includes CSM2 and CSM3 CT_____________Cloud top temperature CVM____________Composite plus Variance Method (for analyzing proxies) delta, 'ˆ‚, 'ˆ†____Net change in a value DJF____________December, January, February (winter) DLW____________Downwelling Long Wave radiation DMS____________Dimethyl Sulfide, a precursor of various atmospheric sulfur compounds dO18, 'ˆ‚O18_____Change in oxygen-18 isotope level DOE____________Department of Energy (US) DW_____________Durbin-Watson statistic EBM____________Energy Balance Model ECMWF__________European Centre for Midrange Weather Forecast Model EE_____________Energy and Environment (journal) EEP____________Eastern Equatorial Pacific ENSO___________El Nino Southern Oscillation EOF____________Empirical Orthogonal Factor EPA____________Environmental Protection Agency (US) EPAC___________Eastern Pacific ERBE___________Earth Radiation Balance Experiment FAR____________Fourth Assessment Report (IPCC) FOI, FOIA______Freedom Of Information Act FWIW___________For What Its Worth GCM____________General Circulation Model (sometimes said to be Global Climate Model) GCR____________Galactic Cosmic Ray GCR____________Galactic Cosmic Radiation GDD____________Growing Degree Day (agriculture) GFS____________Global Forecast System model GGWS, TGGWS____The Great Global Warming Swindle (TV documentary) GHCN___________Global Historical Climate Network GHG____________Green House Gases GISS___________Goddard Institute for Space Studies, also their temperature datase GISSE__________One of the GISS GCMs, which include E, F20, F23, M20, etc. GLRIP__________Global Lake and River Ice Phenology database GOM____________Gulf of Mexico GPCP___________Global Precipitation Climatology Project GPP____________Global Primary Production, total uptake of carbon by plant leaves GPS____________Global Positioning System GRL____________Geophysical Research Letters (journal) Gt_____________Giga-tonne, 10^9 tonnes GW_____________Global Warming Gw_____________Giga-watt (10^9 watts) GWD____________Gravity Wave Drag HadCRUT________Combined land sea temperature database from the CRU HadISST________Ice coverage and SST database from CRU HadSST_________Sea temperature database from the CRU HALOE__________Halogen Occultation Experiment HCFC___________Hydrochlorofluorocarbon, E.G., Hcclf2 Hockey Team____Mann, Bradley, Hughes, Esper, Briffa, Schmidt, Thompson, those who support the Hockeystick hPa____________hecto Pascals (pressure measurement) HS_____________Hockeystick, see MBH98 HTM____________Holocene Thermal Maximum IANAL__________I am not a lawyer … IANAS__________I am not a statistician … IB_____________Inverted Barometer (sea level) ICOADS_________International Comprehensive Ocean-Atmosphere Data Set IIRC___________If I recall correctly … IMF____________Interplanetary Magnetic Field IMHO___________In my humble opinion … INVR___________Inverse Regression (reconstruction method) IO_____________Indian Ocean IPCC___________Intergovernmental Panel on Climate Change IR_____________Infra-red (radiation) ISCCP__________International Satellite Cloud Climatology Project ITCZ___________Inter-Tropical Convergence Zone ITRDB__________International Tree Ring Databank J Clim_________Journal of Climate (journal) Jason__________Radar sea level measuring satellite JJA____________June, July, August (summer) Jones__________Phil Jones of CRU JPL____________Jet Propulsion Laboratory (US) K/T____________Kiehl/Trenberth global energy balance model Ka_____________Kilo annum (1,000 years) LIA____________Little Ice Age (Maunder Minimum) Lowess, loess__Locally Weighted Scatterplot Smoothing (mathematics) LW_____________Longwave (infrared) "greenhouse" radiation M&M____________Steve McIntyre and Ross McKitrick MAM____________March, April, May (spring) Mannomatic_____Michael Mann's mathematical method used in MBH98 mb_____________millibar MBH98__________The Mann/Bradley/Hughes 1998 Hockeystick study MCSST__________Multi-Channel Sea Surface Temperature MEI____________Multivariate ENSO Index MEM____________Maximum Entropy Spectral Method (mathematics) Mg/Ca__________Magnesium/Calcium seashell proxy record MJO____________Madden-Julian Oscillation MLO____________Mauna Loa, CO2 measuring station MM_____________Maunder Minimum MODIS__________Moderate Resolution Imaging Spectroradiometer (satellite instrument) MOHSST6________Met Office Historical Sea Surface Temperature (UK) MSL____________Mean Sea Level MSU____________Microwave Sounding Unit (satellite instrument for temperature measurement) MWP____________Medieval Warming Period MXD____________Maximum Latewood Density (tree rings) N2O____________Nitrous Oxide NAO____________North Atlantic Oscillation NAS____________National Academy of Science (US) NASA___________National Aeronautic and Space Agency NATL___________North Atlantic NCDC___________National Climate Data Center NCEP___________National Centers for Environmental Prediction (US) NGO____________Non-Governmental Organization NH_____________Northern Hemisphere NIO____________North Indian Ocean NIR____________Near Infra-red (radiation) NLSST__________Non-Linear SST NMAT___________Nighttime Marine Air Temperature NOAA___________National Oceanic and Atmospheric Administration NOAMER_________North America NOI____________Northern Oscillation Index NOx____________Nitric Oxide ('X' means the number of oxygens varies: 1,2,2.5) NP_____________North Pacific Pattern Index NSF____________National Science Foundation (US) NSIDC__________National Snow and Ice Data Center NTA____________North Tropical Atlantic Index NVAP___________NASA Water Vapor Project O2_____________Oxygen Gas O3_____________Ozone OC_____________Organic Carbon OM_____________Organic Matter (diesel pollution component) ONI____________Oceanic Nino Index PBL____________Planetary Boundary Layer PCA____________Principle Component Analysis, used by Mann to create the Hockeystick PCR____________Pacific Cyclogenesis Region (cyclones) PCs____________Principle Components PDI____________Power Dissipation Index (cyclones) PDO____________Pacific Decadal Oscillation Pg_____________Peta-gram, 10^15 grams, 1 Pg = 1 Gt PGR____________Post Glacial Rebound of continents previously covered by ice (sea level) PNAS___________Proceedings of the National Academy of Sciences (journal) PPT____________Powerpoint Presentation PSMSL__________Permanent Service for the Mean Sea Level QBO____________Quasi-Biennial Oscillation R______________"R" computer language r.m.s._________Root-Mean-Squared (Sqrt[Sum-Of-N (Errors^2))/N]) R^2, r squared_Predictive power of a model, varies between zero and one RC_____________RealClimate website RCS____________Regional Curve Standardisation tree ring standardisation method RLR____________Revised Local Reference (sea level) RSS____________Remote Sensing Systems, Inc. RW_____________Ring Width (tree rings) SAR____________Second Assessment Report (IPCC) SAT____________Surface Air Temperature SD_____________Standard Deviation SEM____________Standard Error of the Mean SF6____________Sulfur Hexafluoride (a very inert dense gas) SH_____________Southern Hemisphere SI_____________Supplemental Information sigma, Ïƒ_______Standard Error SIO____________Southern Indian Ocean SLP____________Sea Level Pressure SO2____________Sulfur Dioxide (becomes SO3 in air) SO3____________Sulfur Trioxide (becomes Sulfuric Acid in humid air) SOI____________Southern Oscillation Index SOI____________Supplemental Online Information SON____________September, October, November (Autumn) SPAC___________South Pacific SPM____________Summary for Policymakers (IPCC) SQA____________Software Quality Assurance SS_____________Sea Salt (climate forcing) SSA____________Singular Spectrum Analysis (mathematics) SST____________Sea Surface Temperature Sv_____________Sverdrup (flow rate = 1 million cubic meters per second) SW_____________Shortwave (solar) radiation TAR____________Third Assessment Report (IPCC) Tg_____________Tera-gram, 10^12 grams TGGWS, GGWS____The Great Global Warming Swindle (TV4 (UK) documentary) THC____________Thermohaline Circulation TIROS__________Television Infrared Observation Satellite TLT____________Temperature Lower Troposphere TMT____________Temperature Middle Troposphere TNA____________Tropical North Atlantic Index TNI____________Trans-Nino Index TOA____________Top Of Atmosphere TOMS___________Total Ozone Mapping Spectrometer (satellite instrument) TOPEX__________Radar sea level measuring satellite TOVS___________Operational Vertical Sounder (satellite instrument) TRW____________Tree Ring Width TSA____________Tropical South Atlantic Index TSI____________Total Solar Irradiance Tsurf__________Surface Temperature Tw_____________Tera-watt (10^12 watts) TWTW___________The Week That Was, Dr. Fred Singer's newsletter UAH____________University of Alabama Huntsville UCAR___________University Corporation for Atmospheric Research UHI____________Urban Heat Island USHCN__________United States Historical Climate Network UTH____________Upper Tropospheric Humidity UV_____________Ultra-violet (radiation) V&V____________Verification and Validation (for computer code) W______________watt W/m2, W m-2____Watts/meter squared, a measure of radiation WDCG___________World Data Centre for Greenhouse Gases WDCP___________World Data Center for Paleoclimatology WEP____________Western Equatorial Pacific WG1____________Working Group 1 (IPCC) WHWP___________Western Hemisphere Warm Pool WMO____________World Meteorological Organization WP_____________Warm Pool WPAC___________Western Pacific