Earth System Science EARTHSS

Fall 2026 · 199 sections · seat counts as of Oct 15, 2026

Catalog: Earth System Science courses in the 2026-2027 Catalog

EARTHSS 1 Introduction to Earth System Science · 4 units

Code	Meets	Instructor	Seats
42000 Lec A	In person Mon/Wed/Fri 1:00–1:50pm, ALP 1300	J. Ferguson	63 of 398 open
42001 Dis 1	In person Wed 2:00–2:50pm, DBH 1427	J. Ferguson, M. Elizarraras Bo	4 of 80 open
42002 Dis 2	In person Wed 3:00–3:50pm, DBH 1427	J. Ferguson, M. Elizarraras Bo	12 of 78 open
42003 Dis 3	In person Wed 4:00–4:50pm, DBH 1427	J. Ferguson, V. Blankenship	32 of 80 open
42004 Dis 4	In person Fri 12:00–12:50pm, DBH 1427	J. Ferguson, V. Blankenship	8 of 80 open
42005 Dis 5	In person Fri 2:00–2:50pm, DBH 1427	J. Ferguson, M. Elizarraras Bo	7 of 80 open

EARTHSS 2 Coding for Climate · 4 units

Course description

Code	Meets	Instructor	Seats
42010 Lec A	In person Thu 2:00–3:20pm, SSL 270	M. England	51 of 96 open
42011 Lab 1	In person Mon 2:00–4:50pm, MSTB 210	M. England	51 of 96 open

EARTHSS 15 Introduction to Global Climate Change · 4 units

Course description

Code	Meets	Instructor	Seats
42020 Lec A	In person Tue/Thu 12:30–1:50pm, PCB 1100	J. Moore	Full (159/159)
42021 Dis 1	In person Tue 2:00–2:50pm, SSPA 1170	J. Moore, A. De La Luna	Full (40/40)
42022 Dis 2	In person Tue 3:00–3:50pm, SSPA 1170	J. Moore, A. De La Luna	Full (40/40)
42023 Dis 3	In person Tue 4:00–4:50pm, SSPA 1170	J. Moore, A. De La Luna	Full (39/39)
42024 Dis 4	In person Wed 11:00–11:50am, SSPA 1170	J. Moore, A. De La Luna	Full (40/40)

EARTHSS 17 Hurricanes, Tsunamis, and Other Catastrophes · 4 units

Course description

Code	Meets	Instructor	Seats
42030 Lec A	In person Tue/Thu 2:00–3:20pm, ALP 2300	E. Crook	103 of 252 open
42031 Dis 1	In person Tue 10:00–10:50am, DBH 1427	E. Crook, S. Cherukuri	18 of 84 open
42032 Dis 2	In person Tue 9:00–9:50am, DBH 1427	E. Crook, S. Cherukuri	65 of 84 open
42033 Dis 3	In person Tue 4:00–4:50pm, DBH 1427	E. Crook, S. Cherukuri	20 of 84 open

EARTHSS 40C Earth System Physics · 4 units

Course description

Code	Meets	Instructor	Seats
42070 Lec A	In person Tue/Thu 11:00am–12:20pm, ALP 1600	J. Ferguson	35 of 100 open
42071 Lab 1	In person Fri 9:00–10:50am, ALP 2100	J. Ferguson, K. Uyeda	21 of 50 open
42072 Lab 2	In person Fri 1:00–2:50pm, ALP 2200	J. Ferguson, K. Uyeda	14 of 50 open

EARTHSS 45 New Student Seminar · 1 units

Course description

Code	Meets	Instructor	Seats
42110	In person Wed 2:00–2:50pm, CRH 3101	J. Ferguson, E. Crook, B. Walker	6 of 50 open
42112	In person Thu 1:00–1:50pm, CRH 3101	J. Ferguson, E. Crook, B. Walker	13 of 50 open

EARTHSS 51 Land Interactions · 4 units

Course description

Code	Meets	Instructor	Seats
42115 Lec A	In person Mon/Wed/Fri 9:00–9:50am, DBH 1427	C. Czimczik	27 of 84 open
42116 Dis 1	In person Wed 10:00–10:50am, DBH 1427	C. Czimczik, J. Sexton	27 of 84 open

EARTHSS 114 Earth System Science Laboratory and Field Methods · 4 units

Course description

Code	Meets	Instructor	Seats
42125 Lec A	In person Wed 2:00–3:20pm, SH 128	M. Goulden	15 of 64 open
42126 Lab 1	In person Thu 9:30am–12:20pm, RH 204	M. Goulden	Full (17/17)
42127 Lab 2	In person Thu 1:00–3:50pm, RH 204	M. Goulden	5 of 16 open
42128 Lab 3	In person Fri 9:30am–12:20pm, RH 204	M. Goulden	9 of 16 open
42129 Lab 4	In person Fri 1:00–3:50pm, RH 204	M. Goulden	2 of 16 open

EARTHSS 116 Introduction to Environmental Data Science · 4 units

Course description

Code	Meets	Instructor	Seats
42135 Lec A	In person Wed 3:30–4:50pm, MSTB 124	M. Poinelli	Full (50/50)
42136 Lab 1	In person Wed 5:00–7:50pm, ALP 3610	M. Poinelli, K. Willcott	Full (50/50)

EARTHSS 132 Terrestrial Hydrology · 4 units

Course description

Code	Meets	Instructor	Seats
42140 Lec A	In person Mon/Wed/Fri 1:00–1:50pm, MSTB 122	A. Rigden	21 of 45 open
42141 Dis 1	In person Thu 2:00–2:50pm, HICF 100M	A. Rigden	21 of 45 open

EARTHSS 134 Fundamentals of GIS for Environmental Science · 5 units

Course description

Code	Meets	Instructor	Seats
42145 Lec A	In person Tue/Thu 11:00am–12:20pm, ALP 3610	E. Crook	Full (46/45)
42146 Lab 1	In person Mon 2:00–4:50pm, ALP 3610	E. Crook, C. Chalmers	Full (46/45)

EARTHSS 141 Air Quality Management · 4 units

Course description

Code	Meets	Instructor	Seats
42150	In person Tue 2:00–4:50pm, ALP 3610	A. Guenther	7 of 45 open

EARTHSS 142 Atmospheric Chemistry · 4 units

Course description

Code	Meets	Instructor	Seats
42155 Lec A	In person Mon/Wed/Fri 10:00–10:50am, SSL 206	E. Saltzman	8 of 22 open
42156 Dis A	In person Fri 9:00–9:50am, SSL 145	E. Saltzman	8 of 22 open

EARTHSS 144 Marine Geochemistry and Biogeochemistry · 4 units

Course description

Code	Meets	Instructor	Seats
42160	In person Tue/Thu 9:30–10:50am, SSPA 1170	B. Walker	20 of 40 open

EARTHSS 154 Ecosystem Services · 4 units

Course description

Code	Meets	Instructor	Seats
42165	In person Tue/Thu 12:30–1:50pm, ALP 2500	B. Egoh	8 of 45 open

EARTHSS 168 Physiological Plant Ecology · 4 units

Course description

Code	Meets	Instructor	Seats
42170	In person Tue/Thu 3:30–4:50pm, SH 128	T. Huxman	Full (76/75)

EARTHSS 190A Senior Seminar on Global Sustainability I · 2 units

Course description

Code	Meets	Instructor	Seats
42180	In person Mon 2:00–3:20pm, ALP 1120	J. Pratt	6 of 27 open

EARTHSS 190B Senior Seminar on Global Sustainability II · 2 units

Course description

Code	Meets	Instructor	Seats
42181	In person Mon 3:30–4:50pm, ALP 1120	J. Pratt	6 of 27 open

EARTHSS 192 Careers in Earth System Science · 1 units

Course description

Code	Meets	Instructor	Seats
42190	In person Fri 12:00–12:50pm, CRH 3101	E. Crook	Full (56/50)

EARTHSS 197 Independent Study in Earth System Science · 1-4 units

Course description

Code	Meets	Instructor	Seats
42195	Arranged	J. Ferguson	28 of 30 open
42196	Arranged	J. Ferguson	9 of 10 open

EARTHSS 198W Senior Thesis in Earth System Science · 4 units

Course description

Code	Meets	Instructor	Seats
42300	Arranged	S. Allison	10 of 10 open
42303	Arranged	J. Baldwin	10 of 10 open
42306	Arranged	E. Crook	10 of 10 open
42309	Arranged	C. Czimczik	10 of 10 open
42312	Arranged	H. Drake	10 of 10 open
42315	Arranged	E. Druffel	10 of 10 open
42318	Arranged	B. Egoh	10 of 10 open
42321	Arranged	J. Ferguson	10 of 10 open
42324	Arranged	M. Goulden	10 of 10 open
42327	Arranged	A. Guenther	10 of 10 open
42330	Arranged	K. Johnson	10 of 10 open
42333	Arranged	S. Kim	10 of 10 open
42336	Arranged	K. Mackey	10 of 10 open
42339	Arranged	G. Magnusdottir	10 of 10 open
42342	Arranged	A. Martiny	10 of 10 open
42345	Arranged	J. Moore	10 of 10 open
42348	Arranged	M. Prather	10 of 10 open
42354	Arranged	M. England	10 of 10 open
42357	Arranged	J. Randerson	10 of 10 open
42360	Arranged	A. Rigden	10 of 10 open
42363	Arranged	E. Rignot	10 of 10 open
42366	Arranged	E. Saltzman	10 of 10 open
42369	Arranged	I. Velicogna	10 of 10 open
42372	Arranged	B. Walker	10 of 10 open
42375	Arranged	J. Yu	10 of 10 open
42378	Arranged	C. Zender	10 of 10 open
42384	Arranged	L. Freese	10 of 10 open
42387	Arranged	L. Ohenhen	9 of 10 open

EARTHSS 199 Undergraduate Research · 1-4 units

Course description

Code	Meets	Instructor	Seats
42500	Arranged	S. Allison	9 of 10 open
42501	Arranged	A. Aghakouchak	10 of 10 open
42503	Arranged	J. Baldwin	10 of 10 open
42506	Arranged	E. Crook	7 of 10 open
42512	Arranged	C. Czimczik	10 of 10 open
42515	Arranged	H. Drake	10 of 10 open
42518	Arranged	E. Druffel	10 of 10 open
42521	Arranged	B. Egoh	10 of 10 open
42524	Arranged	J. Ferguson	10 of 10 open
42527	Arranged	M. Goulden	10 of 10 open
42530	Arranged	A. Guenther	9 of 10 open
42533	Arranged	K. Johnson	8 of 10 open
42536	Arranged	S. Kim	9 of 10 open
42539	Arranged	K. Mackey	8 of 10 open
42542	Arranged	G. Magnusdottir	9 of 10 open
42545	Arranged	A. Martiny	10 of 10 open
42548	Arranged	J. Moore	10 of 10 open
42551	Arranged	M. Prather	10 of 10 open
42557	Arranged	M. England	7 of 10 open
42560	Arranged	J. Randerson	10 of 10 open
42563	Arranged	A. Rigden	9 of 10 open
42566	Arranged	E. Rignot	10 of 10 open
42569	Arranged	E. Saltzman	10 of 10 open
42572	Arranged	I. Velicogna	10 of 10 open
42575	Arranged	B. Walker	10 of 10 open
42578	Arranged	J. Yu	10 of 10 open
42581	Arranged	C. Zender	10 of 10 open
42584	Arranged	L. Freese	10 of 10 open
42587	Arranged	L. Ohenhen	10 of 10 open

EARTHSS 200 Global Physical Climatology · 4 units

Course description

Code	Meets	Instructor	Seats
42700	In person Mon/Wed/Fri, 2 meeting times All meeting times Mon/Fri 11:00–11:50am RH 184 Wed 12:00–12:50pm RH 184	G. Magnusdottir	13 of 20 open

EARTHSS 238 Satellite Remote Sensing for Earth System Science · 4 units

Course description

Code	Meets	Instructor	Seats
42710	In person Tue/Thu 11:00am–12:20pm, RH 184	E. Rignot	10 of 30 open

EARTHSS 242 Advanced Atmospheric Chemistry · 4 units

Course description

Code	Meets	Instructor	Seats
42712 Lec A	In person Mon/Wed/Fri 10:00–10:50am, Location TBA	E. Saltzman	5 of 10 open
42713 Dis 1	In person Fri 9:00–9:50am, Location TBA	E. Saltzman	5 of 10 open

EARTHSS 266 Global Biogeochemical Cycles · 4 units

Course description

Code	Meets	Instructor	Seats
42715	In person Tue/Thu 12:30–1:50pm, RH 184	J. Randerson	8 of 20 open

EARTHSS 280A Special Topics in Earth System Science · 2 units

Course description

Code	Meets	Instructor	Seats
42721	In person Wed 1:00–2:50pm, Location TBA	K. Johnson	22 of 30 open
42724	Arranged	A. Guenther	10 of 15 open
42726	Arranged	E. Rignot, I. Velicogna	10 of 15 open
42730	In person Mon 4:30–5:20pm, Location TBA	I. Velicogna	11 of 15 open
42732	Arranged	M. England	11 of 15 open
42734	In person Fri 12:00–12:50pm, CRH 1103	S. Kim	8 of 15 open
42735	Arranged	B. Egoh, L. Ohenhen	12 of 15 open

EARTHSS 290 Seminar · 1 units

Course description

Code	Meets	Instructor	Seats
42790	In person Wed 11:00–11:50am, CRH 3101	S. Kim	29 of 40 open

EARTHSS 299 Research · 2-12 units

Course description

Code	Meets	Instructor	Seats
42800	Arranged	S. Allison	9 of 10 open
42803	Arranged	A. Aghakouchak	10 of 10 open
42806	Arranged	J. Baldwin	6 of 10 open
42809	Arranged	C. Czimczik	7 of 10 open
42812	Arranged	H. Drake	6 of 10 open
42815	Arranged	E. Druffel	9 of 10 open
42818	Arranged	B. Egoh	8 of 10 open
42821	Arranged	M. England	9 of 10 open
42824	Arranged	L. Freese	10 of 10 open
42827	Arranged	M. Goulden	10 of 10 open
42830	Arranged	A. Guenther	8 of 10 open
42833	Arranged	K. Johnson	8 of 10 open
42836	Arranged	S. Kim	8 of 10 open
42839	Arranged	K. Mackey	8 of 10 open
42842	Arranged	G. Magnusdottir	9 of 10 open
42845	Arranged	A. Martiny	9 of 10 open
42848	Arranged	J. Moore	9 of 10 open
42851	Arranged	O. Ohenhen	9 of 10 open
42854	Arranged	M. Prather	8 of 10 open
42863	Arranged	J. Randerson	8 of 10 open
42866	Arranged	A. Rigden	8 of 10 open
42869	Arranged	E. Rignot	7 of 10 open
42872	Arranged	E. Saltzman	8 of 10 open
42875	Arranged	I. Velicogna	7 of 10 open
42878	Arranged	B. Walker	7 of 10 open
42881	Arranged	J. Yu	10 of 10 open
42884	Arranged	C. Zender	10 of 10 open

EARTHSS H198 Honors Thesis in Earth System Science · 4 units

Course description

Code	Meets	Instructor	Seats
42400	Arranged	S. Allison	10 of 10 open
42403	Arranged	J. Baldwin	10 of 10 open
42406	Arranged	E. Crook	10 of 10 open
42409	Arranged	C. Czimczik	10 of 10 open
42412	Arranged	H. Drake	10 of 10 open
42415	Arranged	E. Druffel	10 of 10 open
42418	Arranged	B. Egoh	10 of 10 open
42421	Arranged	J. Ferguson	10 of 10 open
42424	Arranged	M. Goulden	10 of 10 open
42427	Arranged	A. Guenther	10 of 10 open
42430	Arranged	K. Johnson	10 of 10 open
42433	Arranged	S. Kim	10 of 10 open
42436	Arranged	K. Mackey	10 of 10 open
42439	Arranged	G. Magnusdottir	10 of 10 open
42442	Arranged	A. Martiny	10 of 10 open
42445	Arranged	J. Moore	10 of 10 open
42448	Arranged	M. Prather	10 of 10 open
42454	Arranged	M. England	10 of 10 open
42457	Arranged	J. Randerson	10 of 10 open
42460	Arranged	A. Rigden	10 of 10 open
42463	Arranged	E. Rignot	10 of 10 open
42466	Arranged	E. Saltzman	10 of 10 open
42469	Arranged	I. Velicogna	10 of 10 open
42472	Arranged	B. Walker	10 of 10 open
42475	Arranged	J. Yu	10 of 10 open
42478	Arranged	C. Zender	10 of 10 open
42484	Arranged	L. Freese	10 of 10 open
42487	Arranged	L. Ohenhen	10 of 10 open

EARTHSS H199A Honors Research in Earth System Science · 4 units

Course description

Code	Meets	Instructor	Seats
42600	Arranged	S. Allison	10 of 10 open
42603	Arranged	J. Baldwin	10 of 10 open
42606	Arranged	E. Crook	9 of 10 open
42609	Arranged	C. Czimczik	10 of 10 open
42612	Arranged	H. Drake	10 of 10 open
42615	Arranged	E. Druffel	10 of 10 open
42618	Arranged	B. Egoh	10 of 10 open
42621	Arranged	J. Ferguson	10 of 10 open
42624	Arranged	M. Goulden	10 of 10 open
42627	Arranged	A. Guenther	10 of 10 open
42630	Arranged	K. Johnson	10 of 10 open
42633	Arranged	S. Kim	10 of 10 open
42636	Arranged	K. Mackey	10 of 10 open
42639	Arranged	G. Magnusdottir	10 of 10 open
42642	Arranged	A. Martiny	10 of 10 open
42645	Arranged	J. Moore	10 of 10 open
42648	Arranged	M. Prather	10 of 10 open
42654	Arranged	M. England	10 of 10 open
42657	Arranged	J. Randerson	10 of 10 open
42660	Arranged	A. Rigden	9 of 10 open
42663	Arranged	E. Rignot	10 of 10 open
42666	Arranged	E. Saltzman	10 of 10 open
42669	Arranged	I. Velicogna	10 of 10 open
42672	Arranged	B. Walker	8 of 10 open
42675	Arranged	J. Yu	10 of 10 open
42678	Arranged	C. Zender	10 of 10 open
42684	Arranged	L. Freese	10 of 10 open
42687	Arranged	L. Ohenhen	10 of 10 open

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