1. GLOBE Observer Citizen Science - Exploring Clouds 4-H Activity Guide Appendix F - Cloud Photos

2. Photo #1 - Cirrus

3. Photo #2 – Cirrus and Persistent Spreading Contrails

4. Photo #3 - Cumulus

5. Photo #4 - Nimbostratus

6. Photo #5 - Altocumulus

7. Photo #6 - Cirrus

8. Photo #7 – Altostratus

9. Photo #8 - Cumulus
Stratocumulus clouds are forming at the bottom of the picture.

10. Photo #9 – Persistent Spreading Contrails

11. Photo #10 - Altocumulus

12. Photo #11 - Cumulus

13. Photo #12 - Stratocumulus

14. Photo #13 - Nimbostratus

15. Photo #14 - Altocumulus

16. Photo #15 - Cumulus

17. Photo 16 - Cirrus

18. Photo #17 - Stratus

19. Photo #18 - Stratocumulus

20. Photo #19 – Persistent Spreading Contrails and Cirrus

21. Photo #20 - Stratocumulus

22. Photo #21- Cirrostratus

23. Photo #22 - Cumulus

24. Photo #23 - Shelf Cloud
Shelf Clouds are not a GLOBE cloud type.

25. Photo #24 - Stratus

26. Photo #25 - Cirrocumulus

27. Photo #26 - Cumulus

28. Photo #27 - Cumulus

29. Photo #28 - Stratocumulus

30. Photo #29 - Cirrus

31. Photo #30 - Cirrocumulus

32. Photo #31 – Persistent Contrail

33. Photo Credits Jeannette Allen (Photos 1, 3, 4, 6, 9)
Bidgee (from Wikipedia) (Photo 5)
Amy Chan (Photo 2)
Carol Clark (Photo 31)
Muhammad Mahdi Karim (Photo 28)
Jeannette Rea Keywood (Photos 8, 10, 12, 14, 16, 18, 19, 22-26, 27, 29)
Piccolo Namek (Photo 15, 17)
Jupiter Plymouth (Photo 21)
The Great Cloudwatcher (Photo 7)
Nicholas A. Tonelli (Photo 20)
Typhoonchaser (Photo 30)
NEED PHOTO CREDIT for #21