Longhurst code
Longhurst code refers to a set of geospatial four-letter geocodes for referencing geographic regions in oceanography.
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.[1]
They are named after Alan R. Longhurst, the author of "Ecological Geography of the Sea", the textbook in which these codes are defined.[2]
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.[3]
| longhurst_code | province_name | ocean | biome |
|---|---|---|---|
| FKLD | Southwest Atlantic shelves | Atlantic | Coastal |
| BRAZ | Brazilian current coast | Atlantic | Coastal |
| BENG | Benguela current coast | Atlantic | Coastal |
| GUIN | Guinea current coast | Atlantic | Coastal |
| CNRY | Canary current coast | Atlantic | Coastal |
| GUIA | Guianas coast | Atlantic | Coastal |
| NECS | Northeast Atlantic shelves | Atlantic | Coastal |
| NWCS | Northwest Atlantic shelves | Atlantic | Coastal |
| ARCT | Atlantic Arctic | Atlantic | Polar |
| SARC | Atlantic sub-Arctic | Atlantic | Polar |
| SATL | South Atlantic gyral | Atlantic | Trade wind |
| ETRA | Eastern tropical Atlantic | Atlantic | Trade wind |
| WTRA | Western tropical Atlantic | Atlantic | Trade wind |
| CARB | Caribbean | Atlantic | Trade wind |
| NATR | North Atlantic tropical gyral | Atlantic | Trade wind |
| NAST E | Northeast Atlantic subtropical gyral | Atlantic | Westerly |
| MEDI | Mediterranean Sea | Atlantic | Westerly |
| NAST W | Northwest Atlantic subtropical gyral | Atlantic | Westerly |
| GFST | Gulf Stream | Atlantic | Westerly |
| NADR | North Atlantic Drift | Atlantic | Westerly |
| HUMB | Humboldt current coast | Pacific | Coastal |
| AUSE | East Australian coast | Pacific | Coastal |
| SUND | Sunda-Arafura shelves | Pacific | Coastal |
| CHIN | China Sea | Pacific | Coastal |
| CAMR | Central American coast | Pacific | Coastal |
| ALSK | Alaska coastal downwelling | Pacific | Coastal |
| NEWZ | New Zealand coast | Pacific | Coastal |
| CCAL | Coastal Californian current | Pacific | Coastal |
| BERS | North Pacific epicontinental sea | Pacific | Polar |
| ARCH | Archipelagic deep basins | Pacific | Trade wind |
| PEQD | Pacific equatorial divergence | Pacific | Trade wind |
| PNEC | North Pacific equatorial counter current | Pacific | Trade wind |
| NPTG | North Pacific Tropical gyre | Pacific | Trade wind |
| C(O)CAL | California current | Pacific | Trade wind |
| SPSG | South Pacific gyre | Pacific | Trade wind |
| WARM | Western Pacific warm pool | Pacific | Trade wind |
| TASM | Tasman Sea | Pacific | Westerly |
| KURO | Kuroshio current | Pacific | Westerly |
| PSAE | Eastern Pacific subarctic gyres | Pacific | Westerly |
| PSAW | Western Pacific subarctic gyres | Pacific | Westerly |
| NPPF | North Pacific polar front | Pacific | Westerly |
| NPSW | Northwest Pacific subtropical | Pacific | Westerly |
| NPSE | Northeast Pacific subtropical | Pacific | Westerly |
| EAFR | Eastern India coast | Indian | Coastal |
| AUSW | Western Australian and Indonesian coast | Indian | Coastal |
| IND E | Eastern India coast | Indian | Coastal |
| REDS | Red Sea, Persian Gulf | Indian | Coastal |
| IND W | Western India coast | Indian | Coastal |
| ISSG | Indian South subtropical gyre | Indian | Trade wind |
| MONS | Indian monsoon gyre | Indian | Trade wind |
| ARAB | Northwest Arabian Sea upwelling | Indian | Westerly |
| SSTC | South subtropical convergence | Antarctic | Westerly |
| SANT | Subantarctic water ring | Antarctic | Westerly |
| ANTA | Antarctic | Antarctic | Polar |
| APLR | Austral polar | Antarctic | Polar |
| BPRL | Boreal polar | Arctic | Polar |
References
- 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. doi:10.1002/gbc.20089. ISSN 0886-6236.
- Ecological Geography of the Sea (ISBN 0124555217), Academic Press, 2007
- 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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