Publication Date:
2024-06-13
Description:
The sensitivity of the tropics to climate change, particularly the amplitude of glacial-to-interglacial changes in sea surface temperature (SST), is one of the great controversies in paleoclimatology. Here we reassess faunal estimates of ice age SSTs, focusing on the problem of no-analog planktonic foraminiferal assemblages in the equatorial oceans that confounds both classical transfer function and modern analog methods. A new calibration strategy developed here, which uses past variability of species to define robust faunal assemblages, solves the no-analog problem and reveals ice age cooling of 5° to 6°C in the equatorial current systems of the Atlantic and eastern Pacific Oceans. Classical transfer functions underestimated temperature changes in some areas of the tropical oceans because core-top assemblages misrepresented the ice age faunal assemblages. Our finding is consistent with some geochemical estimates and model predictions of greater ice age cooling in the tropics than was inferred by Climate: Long-Range Investigation, Mapping, and Prediction (CLIMAP) [1981] and thus may help to resolve a long-standing controversy. Our new foraminiferal transfer function suggests that such cooling was limited to the equatorial current systems, however, and supports CLIMAP's inference of stability of the subtropical gyre centers.
Keywords:
138-846B; A150/180; A152-84; A153-154; A15-547TW; A15-552TW; A15-558; A15-558P; A15-558TW; A15-559FF; A15-572FF; A15-585GC; A15-586TW; A15-590GC; A15-591GC; A15-592FF; A15-596FF; A15-597A; A15-597B; A15-600FF; A15-602FF; A15-612GC; A15-614TW; A15-618GC; A156-4; A157-3; A164-13; A164-15; A164-16; A164-17; A164-23; A164-24; A164-5; A164-6; A164-61; A167-12; A167-13; A167-14; A167-18TW; A167-1TW; A172-1; A172-2; A173-4; A179-13; A179-15; A179-20; A179-24; A179-6; A179-7; A180-13; A180-15; A180-16; A180-20; A180-32; A180-39; A180-47; A180-47PC; A180-48; A180-48PC; A180-56; A180-69; A180-70; A180-72; A180-73; A180-74; A180-76; A180-78; A180-9; A181/185; A181-7; A181-9; A260210A; Agassiz; AH-1; AH-4; AH-5; AH-7; AH-8; All5402P; All5423P; All5424P; All542P; also published as VM28-122; AMPH-005G; AMPH-007PG; AMPH-011P; AMPH-012G; AMPH-013G; AMPH-016G; AMPH-017G; AMPH-019G; AMPH01AR; AMPH-021G; AMPH-022G; AMPH-023G; AMPH-024G; AMPH-107G; AMPH-130G; AMPH-131G; AMPH-132G; AMPH-133G; AMPH-134G; AMPH-135GV; AMPH-137GV; AMPH-138GV; AMPH-139GV; AMPHITRITE; AR1-117; AR1-119; AR1-144; AR2-113; AR2-117; AR2-128; AR2-136; AR3-25; AR3-38; AR3-45; AR4-52; AR4-55; AR4-56; AR4-63; Argo; ARIES; ARIES-046G; ARIES-049G; Atlantic; Atlantic Ocean; Bay of Bengal; BC; Box corer; BRA-262D; BRA-91AD; BRA-91D; BRA-96D; CAP-1BG; CAP-1HG; CAP-2-1BG; CAP-32HG; CAP-3HG; CAP-42-1; CAP-44BG; CAP-48-2; CAP-48HG; CAP-49BG; CAP-4BG; CAP-50HG; CAP-5HG; CAP-6HG; CAP-8-2; CH10098P; CH10-98; CHA-164B; CHA-296; CHA-300; CHA-302; Challenger1872; CHM-5; CHU-23; CHU-23G; CHU-24; CHU-26; CHU-30; CHU-X1; CIRCE; CIRCE-21; CIRCE-239; CIRCE-24; CIRCE-26; CIRCE-27; CIRCE-32; CIRCE-36; CIRCE-38; CIRCE-42; CIRCE-44; CUS-3G; DIS-385D; DIS-386D; DODO; DODO-117PG; DODO-119PG; DODO-126P; DODO-126PG; DODO-144G; DODO-173G; DODO-191; DODO-192G; DODO-193; DODO-195G; DODO-197; DODO-200V; DODO-201G; DODO-202V; DODO-204; DODO-220V; DRILL; Drilling/drill rig; DW010; DW013; DW034; DW035; DW036; DW048; DW050; DW058; DW089; DW137; DW147B; DWD-100B; DWD-108B; DWD-10BG; DWD-10HH; DWD-11BG; DWD-12BG; DWD-12HH; DWD-137G; DWD-13BG; DWD-13HH; DWD-143; DWD-147B; DWD-149; DWD-15BG; DWD-16BG; DWD-34HG; DWD-35HH; DWD-36HG; DWD-46BG; DWD-47B; DWD-47BG; DWD-48BG; DWD-48HG; DWD-49BG; DWD-50HG; DWD-54HG; DWD-56BG; DWD-56HG; DWD-58BG; DWD-58HH; DWD-59BG; DWD-60BG; DWD-61BG; DWD-62BG; DWD-63BG; DWD-64BG; DWD-68BG; DWD-70BG; DWD-71BG; DWD-73BG; DWD-74BG; DWD-75BG; DWD-76BG; DWD-77BG; DWD-78BG; DWD-79BG; DWD-83BG; DWD-89HH; DWD-89HH-2; DWD-93BG; East Atlantic; Eastern Equatorial Pacific; ELT11.010; ELT11.064; ELT11.089; ELT-1101; ELT-1110; ELT-1164; ELT-1189; ELT-1246; ELT-1271; ELT44; ELT44.027-PC; ELT45; ELT45.027-PC; ELT45.029-PC; ELT45.070-PC; ELT45.073-PC; ELT45.077-PC; ELT45.078-PC; ELT45.081-PC; ELT48; ELT48.003-PC; ELT48.011-PC; ELT48.022-PC; ELT48.023-PC; ELT48.027-PC; ELT49; ELT49.022-PC; ELT49.023-PC; ELT49.024-PC; ELT49.025-PC; Eltanin; ELT-C100; EN06601; EN066-10GGC; Endeavor; EQA-27; FANHMS2G; FANHMS4G; FFC; Free fall corer; GC; GIK12392-1; Grab; GRAB; Gravity corer; H.M.S. Challenger (1872); Horizon; Indian Ocean; JAPANYON; Joides Resolution; JSB-5P; JSB-6P; JYN2; JYN2-007G; JYN5-019G; K708-001; K708-004; K708-006; K708-007; K708-008; K714-3; KAL; Kasten corer; KM1-41; KNR073-04-003; KNR733P; Knr735P; KNR735P; Leg138; LFGS; LFGS-36G; LFGS-38G; LFGS-45G; LSDA; LSDA-103V; LSDA-106G; LSDA-107GA; LSDA-113G; LSDA-117G; LSDA-128G; LSDA-136G; LSDA-SCS; LSDA-SCS-002G; LSDA-SCS-003G; LSDA-SCS-006G; LSDA-SCS-008G; LSDA-SCS-009G; LSDA-SCS-013D; LSDH; LSDH-009G; LSDH-025V; LSDH-038V; LSDH-076PG; LSDH-077G; LSDH-078PG; LSDH-079P; LSDH-079PG; LSDH-080G; LSDH09; LSDH-093PG; LSDH-104G; LUSIAD-9; LUSIAD-A; LUSIAD-H; M12392-1; M25; M70-68; M70-PC-49; M70-PC-61; Marion Dufresne (1972); MD10; MD13; MD76-131; MD76-132; MD76-135; MD77-168; MD77-169; MD77-170; MD77-171; MD77-174; MD77-176; MD77-179; MD77-180; MD77-181; MD77-185; MD77-191; MD77-194; MD77-196; MD77-199; MD77-202; MD77-203; MD77-204; MDPC03HO-043K; Melville; MEN; MEN-08G; MEN-11G; MEN-12G; Meteor (1964); MIDPAC; MONS01AR-MONS08AR; MONSOON; MPC-0-1; MPC-0-2; MPC-10-1; MPC-1-1; MPC-11-1; MPC-43K; MPC-45; MSN-100G; MSN-103P; MSN-104P; MSN-109P; MSN-10G; MSN-135P; MSN-136G; MSN-137P; MSN-138P; MSN-141G; MSN-14G; MSN-45G; MSN-52G; MSN-55G; MSN-56PG; MSN-63G; MSN-90G; MSN-93G; mt1-gyre; MT1-gyre; mt1-mid; MT1-mid; mt1-nrsh; MT1-nrsh; MUK-19BP; MUK-20BP; MUK-27HG; NEL-394D; NZO-A106; NZO-A181; NZO-A315; OSIRIS II; OSIRIS III; Pacific Ocean; PAP-127V; PAP-14; PAP-19; PC; Piston corer; PLDS-001G; PLDS-1; Pleiades; PROA; PROA-011P; PROA-079PG; PROA-083PG; PROA-084PG; PROA-085PG-1; PROA-086P; PROA-086PG; PROA-087PG; PROA-088PG; PROA-089PG; PROA-103PG; PROA-118G; PROA-122G; PROA-124G1; PROA-146G; PROA-147G; PROA-149G; PROA-151G; PROA-155G; PROA-156G; PROA-160G; RC0-113; RC0-117; RC0-121; RC08; RC08-102; RC08-103; RC08-145; RC08-16; RC08-18; RC08-22; RC08-23; RC08-27; RC08-28; RC08-39; RC08-40; RC08-41; RC08-46; RC08-50; RC08-53; RC08-60; RC08-61; RC08-62; RC08-63; RC08-94; RC09; RC09-124; RC09-126; RC09-139; RC09-14; RC09-143; RC09-150; RC09-155; RC09-160; RC09-161; RC09-162; RC09-163; RC09-212; RC09-222; RC09-225; RC09-49; RC09-61; RC09-67; RC10; RC10-114; RC10-139; RC10-140; RC10-141; RC10-142; RC10-143; RC10-146; RC10-161; RC10-162; RC10-172; RC10-175; RC10-176; RC10-22; RC10-49; RC10-50; RC10-52; RC10-53; RC10-54; RC10-56; RC10-62; RC10-64; RC10-97; RC11; RC11-10; RC11-103; RC11-106; RC11-11; RC11-111; RC11-116; RC11-117; RC1112; RC11-12; RC11-120; RC11-121; RC11-122; RC11-128; RC11-13; RC11-134; RC11-138; RC11-139; RC11-14; RC11-141; RC11-145; RC11-146; RC11-147; RC11-15; RC11-16; RC11-160; RC11-162; RC11-21; RC11-210; RC11-213; RC11-22; RC11-220; RC11-230; RC11-238; RC11-255; RC11-26; RC11-260; RC11-35; RC11-37; RC11-78; RC11-79; RC11-80; RC11-86; RC11-9; RC12; RC12-107; RC12-121; RC12-138; RC12-139; RC12-143; RC12-146; RC12-233; RC12-234; RC12-235; RC12-241; RC12-266; RC12-268; RC12-291; RC12-292; RC12-293; RC12-294; RC12-297; RC12-298; RC12-299; RC12-300; RC12-303; RC12-304; RC12-328; RC12-33; RC12-330; RC12-331; RC12-332; RC12-333; RC12-335; RC12-339; RC12-340; RC12-341; RC12-342; RC12-343; RC12-344; RC12-347; RC12-350; RC12-361; RC12-365; RC12-366; RC12-417; RC12-418; RC12-45; RC13; RC13-108; RC13-110; RC13-113; RC13-115; RC13-122; RC13-136; RC13-138; RC13-140; RC13-151; RC13-152; RC13-153; RC13-158; RC13-159; RC13-17; RC13-184; RC13-189; RC13-190; RC13-195; RC13-196; RC13-197; RC13-199; RC13-205; RC13-209; RC13-210; RC13-227; RC13-229; RC13-242; RC13-253; RC13-275; RC13-81; RC14; RC14-29; RC14-31; RC14-31TW; RC14-33; RC14-33TW; RC14-34; RC14-34TW; RC14-35; RC14-35TW; RC14-36; RC14-37; RC14-37TW; RC14-39; RC14-39TW; RC14-44; RC14-44TW; RC14-7; RC14-79TW; RC14-9; RC14-92; RC14-93; RC14-94; RC14-97; RC15; RC15-115; RC15-143; RC15-145; RC15-151; RC15-91; RC15-93; RC15-94; RC17; RC17-101; RC17-102; RC17-103; RC17-104; RC17-105; RC17-110; RC17-113; RC17-114; RC17-116; RC17-121; RC17-123; RC17-125; RC17-126; RC17-127; RC17-132; RC17-142; RC17-144; RC17-145; RC17-176; RC17-177; RC17-178; RC17-69; RC17-73; RC17-98; RC18; RC18-47; RC24; RC24-1; RC24-16; RC24-27; RC24-7; RE009-7; RE010-002; RE5-034; RE5-036; RE5-054; RE5-057; RIS-101; RIS-103; RIS-104; RIS-105; RIS-106; RIS-108; RIS-121V; RIS-14; RIS-15G; RIS-17; RIS-17G; RIS-21G; RIS-24; RIS-29G; RIS-32; RIS-33; RIS-34; RIS-35; RIS-51G; Robert Conrad; SCAN; SCAN-015P; SCAN-022PG; SCAN-023PG; SCAN-025G; SCAN-026G; SCAN-027G; SCAN-028G; SCAN-059P; SCAN-065G; SCAN-066G; SCAN-067G; SCAN-068G; SCAN-082P; SCAN-083P; SCAN-084P; SCAN-084PG; SCAN-085P; SCAN-086P; SCAN-087P; SCAN-088P; SCAN-088PG; SCAN-091G; SCAN-094P; SCAN-095G; SCAN-096P; SDS-93P; SDS-95P; SDS-97P; SDS-98P; SOB; SOB-009G; SOB-026GA; SOB-031GA; South Atlantic Ocean; Southern Borderland; South Pacific Ocean; SP008-004; SP009-003; SP010-005; Spencer F. Baird; Stranger; STYX_III; STYX_IX; STYX03AZ; STYX09AZ; STYXIII-75G; STYXIII-77P; STYXIII-80FF-34; STYXIII-81FF-41; STYXIII-81FF-44;
Type:
Dataset
Format:
application/zip, 14 datasets
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