Fig 7 -

• Main Authors: Carin J. Ashjian (11113804), Stephen R. Okkonen (11037339), Robert G. Campbell (11113807), Philip Alatalo (11113810)
• Format: Still Image
• Language: unknown
• Published: 2021
• Subjects: Evolutionary Biology; Ecology; Inorganic Chemistry; Environmental Sciences not elsewhere classified; Biological Sciences not elsewhere classified; proportion; population structure; winds influence population age stru.; Pt; krill life history; water mass regimes; barrow area bowhead whale prey hotspot; preceding-fall winds; Biological Observatory site 5; Lingering Chukchi Sea sea ice; DBO 5 region; LMW; late-spring Chukchi Sea sea ice extent; krill population structure; Alaska Interannual variability; Season Melt Water; sea ice retreat; 11- year study; Chukchi Sea; Barrow; bowhead whale; Chukchi; Sea ice; Alaska
• Online Access: https://doi.org/10.1371/journal.pone.0254418.g007

Mean atmospheric circulation from 28 September to 24 December for years preceding years in which furcilia fractions are greater (A, B) or lesser (C, D) than JAD fractions. Year annotations indicate krill survey years. A) and C) display mean wind vectors (at every 2nd i th grid point), wind directional constancy (color shading) and statistically-significant correlations between JAD fraction and U-component winds (blue contours) and V-component winds (black contours) with correlation contours at r = 0.60 (p < 0.05) and 0.74 (p < 0.01). B) and D) display mean sea level pressure (hPa) patterns. High and low pressure cells are annotated with H and L, respectively. Maps generated using IDL (Interactive Data Language)/v8.6.