|
05 Apr 2013
Status : this preprint was under review for the journal CP but the revision was not accepted.
Dust and associated trace element fluxes in a firn core from the coastal East Antarctica and its linkages with the Southern Hemisphere climate variability over the last ~ 50 yr
C. M. Laluraj , M. Thamban , and K. Satheesan
High-resolution records of dust and trace element fluxes were studied in a firn core from the coastal Dronning Maud Land (cDML) in East Antarctica to identify the influence of climate variability on accumulation of these components over the past ~ 50 yr. A doubling of dust deposition was observed since 1985, coinciding with a shift in the Southern Annular Mode (SAM) index to positive values and associated increase in the wind speed. Back-trajectories showed that an increase in dust deposition is associated with the air parcels originating from north-west of the site, possibly indicating its origin from the Patagonian region. Our results suggest that while multiple processes could have influenced the increased dust formation, shift in SAM had a dominant influence on its transport. It is observed that since the 1985s the strength of easterlies increased significantly over the cDML region, which could sink air and dust material to the region that were brought by the westerlies through mass compensation. The correlation between the dust flux and δ18 O records further suggest that enhanced dust flux in the firn core occurred during periods of colder atmospheric temperature, which reduced the moisture content and increased dust fall. Interestingly, the timing and amplitude of the insoluble dust peaks matched remarkably well with the fluxes of Ba, Cr, Cu, and Zn confirming that dust was the main carrier/source of atmospheric trace elements to East Antarctica during the recent past.
Received: 18 Mar 2013 – Discussion started: 05 Apr 2013
C. M. Laluraj , M. Thamban , and K. Satheesan
Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
C. M. Laluraj , M. Thamban , and K. Satheesan
C. M. Laluraj , M. Thamban , and K. Satheesan
Viewed
Total article views: 1,893 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
1,027
753
113
1,893
86
105
HTML: 1,027
PDF: 753
XML: 113
Total: 1,893
BibTeX: 86
EndNote: 105
Views and downloads (calculated since 05 Apr 2013)
Month
HTML
PDF
XML
Total
Apr 2013
38
65
0
103
May 2013
22
47
5
74
Jun 2013
11
17
2
30
Jul 2013
13
14
1
28
Aug 2013
8
14
0
22
Sep 2013
12
41
0
53
Oct 2013
4
18
0
22
Nov 2013
9
20
0
29
Dec 2013
4
11
2
17
Jan 2014
4
14
1
19
Feb 2014
6
22
2
30
Mar 2014
5
30
2
37
Apr 2014
7
14
0
21
May 2014
4
14
3
21
Jun 2014
5
23
0
28
Jul 2014
7
17
0
24
Aug 2014
4
23
4
31
Sep 2014
4
11
0
15
Oct 2014
4
10
0
14
Nov 2014
1
8
0
9
Dec 2014
2
17
0
19
Jan 2015
10
0
10
Feb 2015
6
9
0
15
Mar 2015
12
6
0
18
Apr 2015
9
18
0
27
May 2015
3
6
0
9
Jun 2015
6
4
0
10
Jul 2015
7
5
0
12
Aug 2015
2
3
0
5
Sep 2015
2
1
0
3
Oct 2015
7
4
0
11
Nov 2015
7
3
1
11
Dec 2015
2
6
0
8
Jan 2016
13
5
0
18
Feb 2016
8
4
1
13
Mar 2016
8
4
0
12
Apr 2016
5
4
0
9
May 2016
3
4
0
7
Jun 2016
2
2
0
4
Jul 2016
3
1
1
5
Aug 2016
6
1
0
7
Sep 2016
5
2
0
7
Oct 2016
5
2
1
8
Nov 2016
5
6
1
12
Dec 2016
1
1
0
2
Jan 2017
8
1
1
10
Feb 2017
16
2
4
22
Mar 2017
26
4
15
45
Apr 2017
28
3
11
42
May 2017
27
3
11
41
Jun 2017
26
1
12
39
Jul 2017
5
2
2
9
Aug 2017
3
2
0
5
Sep 2017
9
1
0
10
Oct 2017
3
2
0
5
Nov 2017
5
0
5
Dec 2017
10
1
0
11
Jan 2018
11
3
0
14
Feb 2018
13
3
16
Mar 2018
8
3
0
11
Apr 2018
7
2
0
9
May 2018
9
4
2
15
Jun 2018
5
1
0
6
Jul 2018
10
5
1
16
Aug 2018
9
6
0
15
Sep 2018
7
4
0
11
Oct 2018
6
2
0
8
Nov 2018
13
6
1
20
Dec 2018
7
3
0
10
Jan 2019
4
3
0
7
Feb 2019
6
5
0
11
Mar 2019
4
3
0
7
Apr 2019
5
2
0
7
May 2019
4
1
0
5
Jun 2019
7
6
0
13
Jul 2019
4
1
0
5
Aug 2019
7
2
0
9
Sep 2019
3
2
0
5
Oct 2019
9
2
1
12
Nov 2019
2
0
2
Dec 2019
4
5
0
9
Jan 2020
1
1
2
Feb 2020
5
1
0
6
Mar 2020
1
1
0
2
Apr 2020
3
1
4
May 2020
3
0
3
Jun 2020
5
1
0
6
Jul 2020
12
5
5
22
Aug 2020
3
2
2
7
Sep 2020
3
2
0
5
Oct 2020
3
3
1
7
Nov 2020
8
3
1
12
Dec 2020
6
5
2
13
Jan 2021
7
4
0
11
Feb 2021
6
2
0
8
Mar 2021
5
3
0
8
Apr 2021
3
4
0
7
May 2021
7
0
7
Jun 2021
9
2
0
11
Jul 2021
7
3
0
10
Aug 2021
12
0
12
Sep 2021
10
0
10
Oct 2021
22
5
0
27
Nov 2021
14
1
0
15
Dec 2021
8
2
0
10
Jan 2022
9
2
0
11
Feb 2022
8
3
0
11
Mar 2022
9
4
1
14
Apr 2022
10
1
11
May 2022
7
4
0
11
Jun 2022
4
2
0
6
Jul 2022
8
0
8
Aug 2022
8
4
0
12
Sep 2022
4
1
0
5
Oct 2022
7
2
0
9
Nov 2022
8
2
0
10
Dec 2022
17
5
1
23
Jan 2023
6
2
0
8
Feb 2023
5
2
0
7
Mar 2023
11
3
0
14
Apr 2023
5
1
0
6
May 2023
8
0
8
Jun 2023
6
1
1
8
Jul 2023
18
1
0
19
Aug 2023
6
1
0
7
Sep 2023
7
2
3
12
Oct 2023
10
2
0
12
Nov 2023
3
0
3
Dec 2023
12
1
13
Jan 2024
12
0
12
Feb 2024
10
1
1
12
Mar 2024
18
2
0
20
Cumulative views and downloads
(calculated since 05 Apr 2013)
Month
HTML views
PDF downloads
XML downloads
Apr 2013
38
65
0
May 2013
60
112
5
Jun 2013
71
129
7
Jul 2013
84
143
8
Aug 2013
92
157
8
Sep 2013
104
198
8
Oct 2013
108
216
8
Nov 2013
117
236
8
Dec 2013
121
247
10
Jan 2014
125
261
11
Feb 2014
131
283
13
Mar 2014
136
313
15
Apr 2014
143
327
15
May 2014
147
341
18
Jun 2014
152
364
18
Jul 2014
159
381
18
Aug 2014
163
404
22
Sep 2014
167
415
22
Oct 2014
171
425
22
Nov 2014
172
433
22
Dec 2014
174
450
22
Jan 2015
174
460
22
Feb 2015
180
469
22
Mar 2015
192
475
22
Apr 2015
201
493
22
May 2015
204
499
22
Jun 2015
210
503
22
Jul 2015
217
508
22
Aug 2015
219
511
22
Sep 2015
221
512
22
Oct 2015
228
516
22
Nov 2015
235
519
23
Dec 2015
237
525
23
Jan 2016
250
530
23
Feb 2016
258
534
24
Mar 2016
266
538
24
Apr 2016
271
542
24
May 2016
274
546
24
Jun 2016
276
548
24
Jul 2016
279
549
25
Aug 2016
285
550
25
Sep 2016
290
552
25
Oct 2016
295
554
26
Nov 2016
300
560
27
Dec 2016
301
561
27
Jan 2017
309
562
28
Feb 2017
325
564
32
Mar 2017
351
568
47
Apr 2017
379
571
58
May 2017
406
574
69
Jun 2017
432
575
81
Jul 2017
437
577
83
Aug 2017
440
579
83
Sep 2017
449
580
83
Oct 2017
452
582
83
Nov 2017
457
582
83
Dec 2017
467
583
83
Jan 2018
478
586
83
Feb 2018
491
586
86
Mar 2018
499
589
86
Apr 2018
506
591
86
May 2018
515
595
88
Jun 2018
520
596
88
Jul 2018
530
601
89
Aug 2018
539
607
89
Sep 2018
546
611
89
Oct 2018
552
613
89
Nov 2018
565
619
90
Dec 2018
572
622
90
Jan 2019
576
625
90
Feb 2019
582
630
90
Mar 2019
586
633
90
Apr 2019
591
635
90
May 2019
595
636
90
Jun 2019
602
642
90
Jul 2019
606
643
90
Aug 2019
613
645
90
Sep 2019
616
647
90
Oct 2019
625
649
91
Nov 2019
627
649
91
Dec 2019
631
654
91
Jan 2020
632
654
92
Feb 2020
637
655
92
Mar 2020
638
656
92
Apr 2020
638
659
93
May 2020
641
659
93
Jun 2020
646
660
93
Jul 2020
658
665
98
Aug 2020
661
667
100
Sep 2020
664
669
100
Oct 2020
667
672
101
Nov 2020
675
675
102
Dec 2020
681
680
104
Jan 2021
688
684
104
Feb 2021
694
686
104
Mar 2021
699
689
104
Apr 2021
702
693
104
May 2021
709
693
104
Jun 2021
718
695
104
Jul 2021
725
698
104
Aug 2021
737
698
104
Sep 2021
747
698
104
Oct 2021
769
703
104
Nov 2021
783
704
104
Dec 2021
791
706
104
Jan 2022
800
708
104
Feb 2022
808
711
104
Mar 2022
817
715
105
Apr 2022
827
715
106
May 2022
834
719
106
Jun 2022
838
721
106
Jul 2022
846
721
106
Aug 2022
854
725
106
Sep 2022
858
726
106
Oct 2022
865
728
106
Nov 2022
873
730
106
Dec 2022
890
735
107
Jan 2023
896
737
107
Feb 2023
901
739
107
Mar 2023
912
742
107
Apr 2023
917
743
107
May 2023
925
743
107
Jun 2023
931
744
108
Jul 2023
949
745
108
Aug 2023
955
746
108
Sep 2023
962
748
111
Oct 2023
972
750
111
Nov 2023
975
750
111
Dec 2023
987
750
112
Jan 2024
999
750
112
Feb 2024
1,009
751
113
Mar 2024
1,027
753
113
Cited
Latest update: 28 Mar 2024