Longhurst code

Longhurst code refers to a set of geospatial four-letter geocodes for referencing geographic regions in oceanography.

Modified Longhurst biogeographic provinces from Djavidnia et al. [1]

The set of 56 geocodes represent biogeochemical provinces that partition the pelagic environment. It is assumed that each province represents a unique set of environmental conditions.[2]

They are named after Alan R. Longhurst, the author of "Ecological Geography of the Sea", the textbook in which these codes are defined.[3]

These codes have also been used in bioinformatic databases such as IMG to represent sample origins for sequenced microbial genomes, as a supplement to latitude and longitude coordinate metrics.[4]

longhurst_codeprovince_nameoceanbiome
FKLDSouthwest Atlantic shelvesAtlanticCoastal
BRAZBrazilian current coastAtlanticCoastal
BENGBenguela current coastAtlanticCoastal
GUINGuinea current coastAtlanticCoastal
CNRYCanary current coastAtlanticCoastal
GUIAGuianas coastAtlanticCoastal
NECSNortheast Atlantic shelvesAtlanticCoastal
NWCSNorthwest Atlantic shelvesAtlanticCoastal
ARCTAtlantic ArcticAtlanticPolar
SARCAtlantic sub-ArcticAtlanticPolar
SATLSouth Atlantic gyralAtlanticTrade wind
ETRAEastern tropical AtlanticAtlanticTrade wind
WTRAWestern tropical AtlanticAtlanticTrade wind
CARBCaribbeanAtlanticTrade wind
NATRNorth Atlantic tropical gyralAtlanticTrade wind
NAST ENortheast Atlantic subtropical gyralAtlanticWesterly
MEDIMediterranean SeaAtlanticWesterly
NAST WNorthwest Atlantic subtropical gyralAtlanticWesterly
GFSTGulf StreamAtlanticWesterly
NADRNorth Atlantic DriftAtlanticWesterly
HUMBHumboldt current coastPacificCoastal
AUSEEast Australian coastPacificCoastal
SUNDSunda-Arafura shelvesPacificCoastal
CHINChina SeaPacificCoastal
CAMRCentral American coastPacificCoastal
ALSKAlaska coastal downwellingPacificCoastal
NEWZNew Zealand coastPacificCoastal
CCALCoastal Californian currentPacificCoastal
BERSNorth Pacific epicontinental seaPacificPolar
ARCHArchipelagic deep basinsPacificTrade wind
PEQDPacific equatorial divergencePacificTrade wind
PNECNorth Pacific equatorial counter currentPacificTrade wind
NPTGNorth Pacific Tropical gyrePacificTrade wind
C(O)CALCalifornia currentPacificTrade wind
SPSGSouth Pacific gyrePacificTrade wind
WARMWestern Pacific warm poolPacificTrade wind
TASMTasman SeaPacificWesterly
KUROKuroshio currentPacificWesterly
PSAEEastern Pacific subarctic gyresPacificWesterly
PSAWWestern Pacific subarctic gyresPacificWesterly
NPPFNorth Pacific polar frontPacificWesterly
NPSWNorthwest Pacific subtropicalPacificWesterly
NPSENortheast Pacific subtropicalPacificWesterly
EAFREast African coastIndianCoastal
AUSWWestern Australian and Indonesian coastIndianCoastal
IND EEastern India coastIndianCoastal
REDSRed Sea, Persian GulfIndianCoastal
IND WWestern India coastIndianCoastal
ISSGIndian South subtropical gyreIndianTrade wind
MONSIndian monsoon gyreIndianTrade wind
ARABNorthwest Arabian Sea upwellingIndianWesterly
SSTCSouth subtropical convergenceAntarcticWesterly
SANTSubantarctic water ringAntarcticWesterly
ANTAAntarcticAntarcticPolar
APLRAustral polarAntarcticPolar
BPRLBoreal polarArcticPolar

References

  1. Djavidnia, S.; Mélin, F.; Hoepffner, N. (2010). "Comparison of global ocean colour data records". Ocean Science. 6 (1): 61–76. Bibcode:2010OcSci...6...61D. doi:10.5194/os-6-61-2010.
  2. Reygondeau, Gabriel; Longhurst, Alan; Martinez, Elodie; Beaugrand, Gregory; Antoine, David; Maury, Olivier (2013). "Dynamic biogeochemical provinces in the global ocean" (PDF). Global Biogeochemical Cycles. 27 (4): 1046–1058. Bibcode:2013GBioC..27.1046R. doi:10.1002/gbc.20089. ISSN 0886-6236.
  3. Ecological Geography of the Sea (ISBN 0124555217), Academic Press, 2007
  4. Markowitz, V. M.; Chen, I.-M. A.; Palaniappan, K.; Chu, K.; Szeto, E.; Grechkin, Y.; Ratner, A.; Jacob, B.; Huang, J.; Williams, P.; Huntemann, M.; Anderson, I.; Mavromatis, K.; Ivanova, N. N.; Kyrpides, N. C. (2011). "IMG: the integrated microbial genomes database and comparative analysis system". Nucleic Acids Research. 40 (D1): D115–D122. doi:10.1093/nar/gkr1044. ISSN 0305-1048. PMC 3245086. PMID 22194640.
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