Status : this preprint was under review for the journal OS. A revision for further review has not been submitted.
15 N enrichment in the surface Particulate Organic Nitrogen of the north-eastern Arabian Sea from the middle to the waning phase of the winter monsoon: possible causes
S. Kumar1,2 and R. Ramesh1
S. Kumar and R. Ramesh
S. Kumar1,2 and R. Ramesh1
1 Planetary and Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad- 380 009, India 2 Environmental Sciences Research Centre, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada
1 Planetary and Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad- 380 009, India 2 Environmental Sciences Research Centre, St. Francis Xavier University, Antigonish, Nova Scotia B2G 2W5, Canada
Hide author details
Received: 06 Feb 2007 – Discussion started: 27 Feb 2007
A temporal increase of ~5‰ in the average nitrogen isotopic composition (δ15 NPON ) of surface particulate organic nitrogen was observed in the open north-eastern Arabian Sea during January to late February-early March 2003, despite the presence of T. erithraeum (up to ~11%), a diazotroph that fixes atmospheric N2 , in the latter period. Hydrographic conditions and residence time of nitrate in the water column suggested that this increase could be a combined effect of denitrification in the subsurface layer and inefficient utilization of nitrate entrained in the water column during January.
S. Kumar and R. Ramesh
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
S. Kumar and R. Ramesh
Viewed
Total article views: 1,377 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
881
362
134
1,377
81
82
HTML: 881
PDF: 362
XML: 134
Total: 1,377
BibTeX: 81
EndNote: 82
Views and downloads (calculated since 01 Feb 2013)
Month
HTML
PDF
XML
Total
Feb 2013
7
9
3
19
Mar 2013
1
11
3
15
Apr 2013
3
10
2
15
May 2013
1
6
4
11
Jun 2013
1
11
0
12
Jul 2013
8
0
8
Aug 2013
1
3
0
4
Sep 2013
1
4
0
5
Oct 2013
2
4
2
8
Nov 2013
7
6
13
Dec 2013
1
7
6
14
Jan 2014
3
4
4
11
Feb 2014
5
9
5
19
Mar 2014
5
8
4
17
Apr 2014
2
6
4
12
May 2014
1
5
15
21
Jun 2014
2
6
11
19
Jul 2014
1
8
1
10
Aug 2014
1
9
0
10
Sep 2014
13
0
13
Oct 2014
11
2
13
Nov 2014
1
7
0
8
Dec 2014
1
6
1
8
Jan 2015
6
0
6
Feb 2015
6
0
6
Mar 2015
5
2
0
7
Apr 2015
14
0
14
May 2015
4
1
1
6
Jun 2015
4
1
0
5
Jul 2015
7
0
7
Aug 2015
2
2
1
5
Sep 2015
1
2
0
3
Oct 2015
4
0
4
Nov 2015
5
1
6
Dec 2015
5
0
5
Jan 2016
7
2
0
9
Feb 2016
6
1
1
8
Mar 2016
10
2
0
12
Apr 2016
8
5
2
15
May 2016
7
1
0
8
Jun 2016
5
0
5
Jul 2016
6
2
1
9
Aug 2016
5
1
0
6
Sep 2016
5
0
5
Oct 2016
5
3
0
8
Nov 2016
7
5
1
13
Dec 2016
3
1
0
4
Jan 2017
12
2
1
15
Feb 2017
11
1
2
14
Mar 2017
21
4
5
30
Apr 2017
18
2
3
23
May 2017
30
4
34
Jun 2017
28
1
4
33
Jul 2017
10
1
11
Aug 2017
7
1
1
9
Sep 2017
5
0
5
Oct 2017
5
1
0
6
Nov 2017
6
0
6
Dec 2017
5
1
0
6
Jan 2018
12
2
0
14
Feb 2018
19
5
24
Mar 2018
8
1
0
9
Apr 2018
13
3
1
17
May 2018
8
3
0
11
Jun 2018
9
1
2
12
Jul 2018
8
1
0
9
Aug 2018
8
1
0
9
Sep 2018
8
1
0
9
Oct 2018
9
3
2
14
Nov 2018
14
3
0
17
Dec 2018
8
2
0
10
Jan 2019
10
2
0
12
Feb 2019
10
2
1
13
Mar 2019
11
1
0
12
Apr 2019
13
2
0
15
May 2019
6
3
1
10
Jun 2019
7
2
0
9
Jul 2019
17
4
0
21
Aug 2019
11
2
0
13
Sep 2019
12
2
0
14
Oct 2019
10
0
10
Nov 2019
9
1
0
10
Dec 2019
6
3
3
12
Jan 2020
11
2
3
16
Feb 2020
9
4
2
15
Mar 2020
2
1
0
3
Apr 2020
4
0
4
May 2020
17
1
1
19
Jun 2020
16
0
16
Jul 2020
16
6
3
25
Aug 2020
5
1
3
9
Sep 2020
9
2
0
11
Oct 2020
6
6
0
12
Nov 2020
5
5
1
11
Dec 2020
12
5
1
18
Jan 2021
8
7
2
17
Feb 2021
9
2
0
11
Mar 2021
9
4
0
13
Apr 2021
7
1
0
8
May 2021
16
3
0
19
Jun 2021
7
2
0
9
Jul 2021
7
2
0
9
Aug 2021
11
1
0
12
Sep 2021
5
0
5
Oct 2021
6
3
0
9
Nov 2021
12
4
0
16
Dec 2021
15
4
0
19
Jan 2022
3
2
0
5
Feb 2022
4
2
0
6
Mar 2022
3
2
1
6
Apr 2022
6
1
0
7
May 2022
6
2
0
8
Jun 2022
9
1
0
10
Jul 2022
12
1
0
13
Aug 2022
10
4
0
14
Sep 2022
5
2
0
7
Oct 2022
7
0
7
Nov 2022
6
2
0
8
Dec 2022
10
2
0
12
Jan 2023
6
3
0
9
Cumulative views and downloads
(calculated since 01 Feb 2013)
Month
HTML views
PDF downloads
XML downloads
Mar 2013
7
9
3
Mar 2013
8
20
6
May 2013
11
30
8
May 2013
12
36
12
Jul 2013
13
47
12
Jul 2013
13
55
12
Aug 2013
14
58
12
Oct 2013
15
62
12
Oct 2013
17
66
14
Dec 2013
17
73
20
Dec 2013
18
80
26
Jan 2014
21
84
30
Mar 2014
26
93
35
Mar 2014
31
101
39
May 2014
33
107
43
May 2014
34
112
58
Jul 2014
36
118
69
Jul 2014
37
126
70
Aug 2014
38
135
70
Oct 2014
38
148
70
Oct 2014
38
159
72
Dec 2014
39
166
72
Dec 2014
40
172
73
Jan 2015
40
178
73
Mar 2015
46
178
73
Mar 2015
51
180
73
May 2015
65
180
73
May 2015
69
181
74
Jul 2015
73
182
74
Jul 2015
80
182
74
Aug 2015
82
184
75
Oct 2015
83
186
75
Oct 2015
87
186
75
Dec 2015
92
186
76
Dec 2015
92
191
76
Jan 2016
99
193
76
Mar 2016
105
194
77
Mar 2016
115
196
77
May 2016
123
201
79
May 2016
130
202
79
Jul 2016
135
202
79
Jul 2016
141
204
80
Aug 2016
146
205
80
Oct 2016
151
205
80
Oct 2016
156
208
80
Dec 2016
163
213
81
Dec 2016
166
214
81
Jan 2017
178
216
82
Mar 2017
189
217
84
Mar 2017
210
221
89
May 2017
228
223
92
May 2017
258
223
96
Jul 2017
286
224
100
Jul 2017
296
224
101
Aug 2017
303
225
102
Oct 2017
308
225
102
Oct 2017
313
226
102
Dec 2017
319
226
102
Dec 2017
324
227
102
Jan 2018
336
229
102
Mar 2018
355
229
107
Mar 2018
363
230
107
May 2018
376
233
108
May 2018
384
236
108
Jul 2018
393
237
110
Jul 2018
401
238
110
Aug 2018
409
239
110
Oct 2018
417
240
110
Oct 2018
426
243
112
Dec 2018
440
246
112
Dec 2018
448
248
112
Jan 2019
458
250
112
Mar 2019
468
252
113
Mar 2019
479
253
113
May 2019
492
255
113
May 2019
498
258
114
Jul 2019
505
260
114
Jul 2019
522
264
114
Aug 2019
533
266
114
Oct 2019
545
268
114
Oct 2019
555
268
114
Dec 2019
564
269
114
Dec 2019
570
272
117
Jan 2020
581
274
120
Mar 2020
590
278
122
Mar 2020
592
279
122
May 2020
596
279
122
May 2020
613
280
123
Jul 2020
629
280
123
Jul 2020
645
286
126
Aug 2020
650
287
129
Oct 2020
659
289
129
Oct 2020
665
295
129
Dec 2020
670
300
130
Dec 2020
682
305
131
Jan 2021
690
312
133
Mar 2021
699
314
133
Mar 2021
708
318
133
May 2021
715
319
133
May 2021
731
322
133
Jul 2021
738
324
133
Jul 2021
745
326
133
Aug 2021
756
327
133
Oct 2021
761
327
133
Oct 2021
767
330
133
Dec 2021
779
334
133
Dec 2021
794
338
133
Jan 2022
797
340
133
Mar 2022
801
342
133
Mar 2022
804
344
134
May 2022
810
345
134
May 2022
816
347
134
Jul 2022
825
348
134
Jul 2022
837
349
134
Aug 2022
847
353
134
Oct 2022
852
355
134
Oct 2022
859
355
134
Dec 2022
865
357
134
Dec 2022
875
359
134
Jan 2023
881
362
134
Saved
Latest update: 31 Jan 2023