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Lapse rates are calculated for the individual months and for the individual watersheds within the basin. Table 4 provides an internally consistent set of values of λa for different months within the major watersheds of UIB.

Table 4

Monthly average lapse rates in the individual watersheds of UIB

 GilgitHunzaShigarShyokAstoreShingoKharmong
Jan 0.00591 0.00602 0.00641 0.00403 0.00577 0.00709 0.00840 
Feb 0.00663 0.00631 0.00668 0.00587 0.00619 0.00824 0.00819 
Mar 0.00690 0.00655 0.00716 0.00730 0.00657 0.00955 0.00899 
Apr 0.00663 0.00649 0.00747 0.00743 0.00658 0.00922 0.01026 
May 0.00618 0.00660 0.00743 0.00738 0.00677 0.00912 0.00962 
Jun 0.00556 0.00661 0.00771 0.00680 0.00658 0.00861 0.00908 
Jul 0.00605 0.00625 0.00734 0.00598 0.00675 0.00825 0.00995 
Aug 0.00596 0.00596 0.00746 0.00594 0.00647 0.00756 0.01017 
Sep 0.00538 0.00618 0.00736 0.00494 0.00619 0.00751 0.00905 
Oct 0.00575 0.00666 0.00787 0.00446 0.00626 0.00729 0.00986 
Nov 0.00561 0.00656 0.00749 0.00346 0.00617 0.00727 0.00956 
Dec 0.00547 0.00641 0.00689 0.00357 0.00588 0.00707 0.00933 
 GilgitHunzaShigarShyokAstoreShingoKharmong
Jan 0.00591 0.00602 0.00641 0.00403 0.00577 0.00709 0.00840 
Feb 0.00663 0.00631 0.00668 0.00587 0.00619 0.00824 0.00819 
Mar 0.00690 0.00655 0.00716 0.00730 0.00657 0.00955 0.00899 
Apr 0.00663 0.00649 0.00747 0.00743 0.00658 0.00922 0.01026 
May 0.00618 0.00660 0.00743 0.00738 0.00677 0.00912 0.00962 
Jun 0.00556 0.00661 0.00771 0.00680 0.00658 0.00861 0.00908 
Jul 0.00605 0.00625 0.00734 0.00598 0.00675 0.00825 0.00995 
Aug 0.00596 0.00596 0.00746 0.00594 0.00647 0.00756 0.01017 
Sep 0.00538 0.00618 0.00736 0.00494 0.00619 0.00751 0.00905 
Oct 0.00575 0.00666 0.00787 0.00446 0.00626 0.00729 0.00986 
Nov 0.00561 0.00656 0.00749 0.00346 0.00617 0.00727 0.00956 
Dec 0.00547 0.00641 0.00689 0.00357 0.00588 0.00707 0.00933 

Station pairs and period of records.

Gilgit: Gilgit–Schandur (1995–2005); Hunza: Naltar–Khunjerab (1999–2010); Shigar: Shigar–Khunjerab (1999–2010).

Shyok: Skardu–Hushey (1999–2010); Astore: Astore–Burzil (1999–2010); Shingo: Skardu–Deosai (1999–2010).

Kharmong: Leh–Demchok (1978–1990).

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