Organic acids and cloud droplet acidity in recent years at Whiteface Mountain, NY, with a focus on wildfire smoke influence

Tripathy, Archana; Khwaja, Haider A.; Hussain, Mirza M.; Yerger, Elizabeth; Kelting, Daniel; Lawrence, Christopher E.; Casson, Paul; Snyder, Phil; Lombardo, Sara; Pittman, Noah; DeMarle, Kathleen; Patel, Rudra; Hammond, Lily; Apel, Eric C.; Hornbrook, Rebecca S.; Hills, Alan J.; Brandt, Richard; McKim, Scott; Schlemmer, Jim; Lance, Sara

doi:10.5194/acp-26-3951-2026

Articles | Volume 26, issue 6

https://doi.org/10.5194/acp-26-3951-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-26-3951-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 26, issue 6

Research article

|

20 Mar 2026

Research article |

| 20 Mar 2026

Organic acids and cloud droplet acidity in recent years at Whiteface Mountain, NY, with a focus on wildfire smoke influence

Archana Tripathy, Haider A. Khwaja, Mirza M. Hussain, Elizabeth Yerger, Daniel Kelting, Christopher E. Lawrence, Paul Casson, Phil Snyder, Sara Lombardo, Noah Pittman, Kathleen DeMarle, Rudra Patel, Lily Hammond, Eric C. Apel, Rebecca S. Hornbrook, Alan J. Hills, Richard Brandt, Scott McKim, Jim Schlemmer, and Sara Lance

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Cumulative views and downloads (calculated since 22 Oct 2025)

Month	HTML	PDF	XML	Total
Oct 2025	244	54	18	316
Nov 2025	196	100	24	320
Dec 2025	252	128	28	408
Jan 2026	216	92	2	310
Feb 2026	164	78	14	256
Mar 2026	501	147	18	666
Apr 2026	336	155	9	500
May 2026	286	67	8	361
Jun 2026	29	12	7	48
Jul 2026	182	31	19	232
Aug 2026	52	34	20	106
Sep 2026	162	166	111	439
Oct 2026	189	137	88	414
Nov 2026	11	6	1	18

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Short summary

We present seven years of cloud water measurements from the summit of Whiteface Mountain in upstate New York to evaluate how organic acids affect cloud droplet acidity in the summer. Sources of these acids, ranging from local biogenic emissions to long-range wildfire smoke plumes, play a major role in reshaping the cloud chemistry of this remote region, which was once controlled mainly by industrial pollution.