Brown carbon aerosols from burning of boreal peatlands: microphysical  properties, emission factors, and implications for direct radiative forcing

Chakrabarty, Rajan K.; Gyawali, Madhu; Yatavelli, Reddy L. N.; Pandey, Apoorva; Watts, Adam C.; Knue, Joseph; Chen, Lung-Wen A.; Pattison, Robert R.; Tsibart, Anna; Samburova, Vera; Moosmüller, Hans

doi:10.5194/acp-16-3033-2016

Articles | Volume 16, issue 5

https://doi.org/10.5194/acp-16-3033-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/acp-16-3033-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 16, issue 5

Research article

|

09 Mar 2016

Research article |

| 09 Mar 2016

Brown carbon aerosols from burning of boreal peatlands: microphysical properties, emission factors, and implications for direct radiative forcing

Rajan K. Chakrabarty, Madhu Gyawali, Reddy L. N. Yatavelli, Apoorva Pandey, Adam C. Watts, Joseph Knue, Lung-Wen A. Chen, Robert R. Pattison, Anna Tsibart, Vera Samburova, and Hans Moosmüller

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Dec 2015	18	30	4	52
Jan 2016	40	13	3	56
Feb 2016	33	14	2	49
Mar 2016	228	124	1	353
Apr 2016	62	17	1	80
May 2016	62	24	1	87
Jun 2016	23	24	5	52
Jul 2016	14	5	3	22
Aug 2016	17	11	1	29
Sep 2016	13	12	0	25
Oct 2016	14	7	0	21
Nov 2016	9	8	0	17
Dec 2016	7	4	0	11
Jan 2017	23	13	0	36
Feb 2017	17	12	0	29
Mar 2017	23	26	1	50
Apr 2017	33	27	0	60
May 2017	38	23	2	63
Jun 2017	36	11	2	49
Jul 2017	29	18	0	47
Aug 2017	14	16	0	30
Sep 2017	14	23	2	39
Oct 2017	19	24	0	43
Nov 2017	18	23	0	41
Dec 2017	12	20	0	32
Jan 2018	15	20	0	35
Feb 2018	12	13	2	27
Mar 2018	15	19	1	35
Apr 2018	16	17	1	34
May 2018	21	20	2	43
Jun 2018	16	21	1	38
Jul 2018	11	17	1	29
Aug 2018	30	15	0	45
Sep 2018	21	15	1	37
Oct 2018	24	18	3	45
Nov 2018	11	12	2	25
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Feb 2019	12	8	2	22
Mar 2019	3	8	0	11
Apr 2019	16	9	3	28
May 2019	9	10	0	19
Jun 2019	8	13	3	24
Jul 2019	9	9	1	19
Aug 2019	11	4	0	15
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Dec 2019	8	13	0	21
Jan 2020	13	13	0	26
Feb 2020	6	8	0	14
Mar 2020	8	14	1	23
Apr 2020	13	9	0	22
May 2020	9	11	0	20
Jun 2020	25	8	2	35
Jul 2020	22	16	3	41
Aug 2020	15	8	1	24
Sep 2020	16	8	2	26
Oct 2020	16	22	0	38
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Jan 2021	25	18	3	46
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Mar 2021	12	12	0	24
Apr 2021	17	18	0	35
May 2021	15	14	1	30
Jun 2021	23	8	1	32
Jul 2021	22	19	3	44
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Dec 2021	32	19	1	52
Jan 2022	25	8	0	33
Feb 2022	27	13	2	42
Mar 2022	47	16	0	63
Apr 2022	16	13	2	31
May 2022	25	25	1	51
Jun 2022	13	8	1	22
Jul 2022	13	15	3	31
Aug 2022	23	23	3	49
Sep 2022	16	16	2	34
Oct 2022	28	13	2	43
Nov 2022	45	25	0	70
Dec 2022	55	17	1	73
Jan 2023	56	31	1	88
Feb 2023	63	29	1	93
Mar 2023	62	32	0	94
Apr 2023	50	24	2	76
May 2023	77	30	0	107
Jun 2023	73	15	0	88
Jul 2023	75	14	0	89
Aug 2023	70	20	4	94
Sep 2023	72	19	1	92
Oct 2023	103	30	2	135
Nov 2023	56	12	1	69
Dec 2023	76	25	2	103
Jan 2024	78	31	1	110
Feb 2024	58	16	2	76
Mar 2024	132	32	2	166
Apr 2024	110	21	3	134
May 2024	50	23	1	74
Jun 2024	50	23	2	75
Jul 2024	23	24	2	49
Aug 2024	45	26	4	75
Sep 2024	19	14	0	33
Oct 2024	36	13	0	49
Nov 2024	17	18	3	38
Dec 2024	18	23	3	44
Jan 2025	30	24	0	54
Feb 2025	38	23	4	65
Mar 2025	37	26	2	65
Apr 2025	38	23	0	61
May 2025	36	8	1	45
Jun 2025	58	21	4	83
Jul 2025	45	30	1	76
Aug 2025	45	22	0	67
Sep 2025	73	24	1	98
Oct 2025	33	32	0	65
Nov 2025	44	36	6	86

Cumulative views and downloads (calculated since 23 Oct 2015)

Month	HTML	PDF	XML	Total
Oct 2015	116	123	8	247
Nov 2015	41	42	10	93
Dec 2015	18	30	4	52
Jan 2016	40	13	3	56
Feb 2016	33	14	2	49
Mar 2016	228	124	1	353
Apr 2016	62	17	1	80
May 2016	62	24	1	87
Jun 2016	23	24	5	52
Jul 2016	14	5	3	22
Aug 2016	17	11	1	29
Sep 2016	13	12	0	25
Oct 2016	14	7	0	21
Nov 2016	9	8	0	17
Dec 2016	7	4	0	11
Jan 2017	23	13	0	36
Feb 2017	17	12	0	29
Mar 2017	23	26	1	50
Apr 2017	33	27	0	60
May 2017	38	23	2	63
Jun 2017	36	11	2	49
Jul 2017	29	18	0	47
Aug 2017	14	16	0	30
Sep 2017	14	23	2	39
Oct 2017	19	24	0	43
Nov 2017	18	23	0	41
Dec 2017	12	20	0	32
Jan 2018	15	20	0	35
Feb 2018	12	13	2	27
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Apr 2018	16	17	1	34
May 2018	21	20	2	43
Jun 2018	16	21	1	38
Jul 2018	11	17	1	29
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Oct 2018	24	18	3	45
Nov 2018	11	12	2	25
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Feb 2019	12	8	2	22
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Apr 2020	13	9	0	22
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Sep 2020	16	8	2	26
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Apr 2021	17	18	0	35
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Jun 2021	23	8	1	32
Jul 2021	22	19	3	44
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Jan 2022	25	8	0	33
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Mar 2022	47	16	0	63
Apr 2022	16	13	2	31
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Jun 2022	13	8	1	22
Jul 2022	13	15	3	31
Aug 2022	23	23	3	49
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Oct 2022	28	13	2	43
Nov 2022	45	25	0	70
Dec 2022	55	17	1	73
Jan 2023	56	31	1	88
Feb 2023	63	29	1	93
Mar 2023	62	32	0	94
Apr 2023	50	24	2	76
May 2023	77	30	0	107
Jun 2023	73	15	0	88
Jul 2023	75	14	0	89
Aug 2023	70	20	4	94
Sep 2023	72	19	1	92
Oct 2023	103	30	2	135
Nov 2023	56	12	1	69
Dec 2023	76	25	2	103
Jan 2024	78	31	1	110
Feb 2024	58	16	2	76
Mar 2024	132	32	2	166
Apr 2024	110	21	3	134
May 2024	50	23	1	74
Jun 2024	50	23	2	75
Jul 2024	23	24	2	49
Aug 2024	45	26	4	75
Sep 2024	19	14	0	33
Oct 2024	36	13	0	49
Nov 2024	17	18	3	38
Dec 2024	18	23	3	44
Jan 2025	30	24	0	54
Feb 2025	38	23	4	65
Mar 2025	37	26	2	65
Apr 2025	38	23	0	61
May 2025	36	8	1	45
Jun 2025	58	21	4	83
Jul 2025	45	30	1	76
Aug 2025	45	22	0	67
Sep 2025	73	24	1	98
Oct 2025	33	32	0	65
Nov 2025	44	36	6	86

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Short summary

Brown carbon aerosols dominate particulate emissions from the burning of Alaskan and Siberian peatlands. They physically occur as amorphous "tar balls" with negligible black carbon mixing. They absorb very strongly in the shorter visible wavelengths, characterized by a mean Ångström coefficient of ≈ 9. These aerosols could result in a net warming of the atmosphere, provided the albedo of the underlying surface is greater than 0.6.