1977 09 - daily  - mean of NCEP mean Daily Clear Sky Downward Longwave Flux at surface, W/m^2.
BasinID	Name	01	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
0	Pan Arctic	250.4	248.1	246.9	247.4	248.6	247.9	246.4	246.5	247.0	245.2	242.7	242.9	241.3	240.4	239.9	239.9	238.6	237.2	233.2	234.9	235.2	233.4	227.6	226.1	225.3	223.9	221.2	219.5	218.0	217.1	-9999.0
34	Hudson Bay	276.9	266.3	265.7	269.6	267.4	265.4	264.8	272.2	273.4	265.8	258.2	260.2	265.9	265.9	268.9	273.5	272.5	262.7	249.6	254.0	261.9	267.2	265.6	266.7	268.2	265.8	258.7	248.9	245.8	248.5	-9999.0
36	Hudson Strait	276.3	248.7	240.9	240.3	240.2	245.9	247.7	229.4	232.8	242.0	221.9	224.0	227.7	232.3	233.7	228.5	226.3	222.4	208.3	221.7	231.3	231.4	225.0	231.1	232.7	230.1	219.1	218.3	219.6	222.3	-9999.0
98	Bering Strait	258.9	257.2	252.9	252.1	249.2	250.4	252.2	251.9	245.6	247.0	259.8	255.9	245.5	241.9	243.8	247.0	243.6	238.3	233.5	228.4	233.0	236.7	226.8	231.2	226.0	221.4	219.8	231.8	227.5	218.5	-9999.0
128	Arctic subocean	187.6	183.1	182.5	178.3	175.4	173.5	175.0	178.1	180.7	179.0	174.4	162.6	159.5	158.5	159.7	163.0	164.2	168.2	167.7	172.2	170.7	173.1	171.7	171.1	168.4	171.4	165.2	169.5	173.2	170.9	-9999.0
130	Chukchi Sea	262.6	267.0	267.5	258.0	253.6	263.1	256.3	247.1	245.9	249.0	250.5	247.1	254.0	249.1	236.0	242.3	244.0	242.4	228.5	220.0	211.7	213.0	228.9	240.8	238.2	226.1	223.2	214.5	205.5	223.9	-9999.0
132	Beaufort Sea	241.7	238.3	241.5	244.4	248.3	254.1	259.1	257.0	254.1	248.1	251.2	262.3	255.3	242.0	243.2	243.3	243.6	247.2	251.6	260.9	263.9	258.5	252.0	254.4	254.3	248.5	241.2	239.1	247.9	243.8	-9999.0
134	Arctic Archipelago	230.8	228.9	219.7	223.1	218.5	208.8	207.8	216.4	227.7	228.3	217.8	207.5	188.2	179.0	186.8	204.1	215.9	226.1	222.2	219.5	229.2	242.1	227.4	210.8	213.8	224.0	223.3	212.0	214.3	225.7	-9999.0
136	Foxe Basin	217.1	219.0	226.7	230.9	224.0	222.6	214.5	206.9	210.3	214.0	220.7	223.9	218.7	208.3	206.2	200.4	193.8	195.7	211.8	216.6	218.9	232.6	241.0	214.9	197.3	195.6	215.1	220.5	221.1	211.0	-9999.0
138	Baffin Bay	160.7	168.3	167.8	166.5	169.5	169.0	167.3	170.3	172.8	172.9	165.8	158.6	158.9	165.3	156.9	153.5	163.5	183.0	176.3	172.8	163.2	157.6	156.4	159.3	153.2	155.6	163.1	163.5	162.5	157.3	-9999.0
139	South Greenland	169.7	161.3	159.0	158.6	158.4	164.3	172.0	166.0	167.6	162.5	158.3	170.2	162.0	166.6	184.4	215.3	222.0	214.6	198.5	192.9	175.5	164.4	157.9	147.2	159.6	178.3	173.6	166.9	167.0	167.1	-9999.0
140	Greenland Sea	140.9	141.5	142.3	138.9	134.0	143.8	143.8	148.2	147.4	150.8	147.4	136.5	134.3	144.3	146.7	149.3	171.0	194.1	174.5	158.3	151.1	142.9	131.8	138.3	137.2	156.1	173.8	177.9	171.8	161.0	-9999.0
142	Norwegian Sea	266.0	280.7	268.2	258.4	268.4	257.2	245.0	240.0	236.8	230.3	228.7	229.1	236.4	240.5	238.1	237.6	243.0	247.6	247.7	257.9	249.1	242.9	246.1	249.7	251.2	245.2	251.4	255.4	247.9	245.8	-9999.0
144	Barents Sea	285.8	277.3	281.6	305.0	294.8	290.2	283.3	270.7	256.0	258.9	271.9	266.2	257.5	257.3	253.8	260.7	249.4	239.0	222.6	218.7	228.1	227.5	227.4	227.0	223.7	228.3	237.3	237.7	231.7	226.2	-9999.0
146	Kara Sea	273.3	274.8	268.3	262.3	271.0	270.7	266.9	266.1	270.7	270.2	263.9	266.3	271.3	270.3	266.6	263.4	263.3	260.7	259.8	257.6	250.4	245.4	233.8	232.4	235.7	227.2	220.2	221.0	221.7	223.1	-9999.0
148	Laptev Sea	241.6	245.8	254.6	255.5	253.2	246.3	240.2	242.5	243.6	240.3	242.0	242.7	236.1	240.2	230.9	212.1	203.2	207.9	213.7	223.4	227.1	225.7	224.2	222.1	211.6	213.2	207.4	200.4	194.6	194.4	-9999.0
150	East Siberian Sea	246.1	235.6	231.6	236.3	240.2	242.2	249.1	251.1	242.5	239.3	231.3	220.6	222.1	219.9	229.1	235.3	223.1	211.4	207.7	216.4	220.4	215.0	215.0	207.4	202.2	201.5	209.4	223.0	224.6	213.0	-9999.0
152	Gulf of Alaska	258.3	259.4	251.9	248.8	248.5	253.5	252.8	247.5	250.1	260.0	267.1	255.6	242.6	249.7	246.3	256.8	252.7	243.4	239.9	238.0	257.5	251.7	237.1	233.5	228.5	228.8	242.2	254.5	233.8	219.7	-9999.0
154	Southeast Bering Sea	273.0	273.8	275.5	266.8	267.9	272.6	262.2	264.6	262.8	270.5	266.3	257.6	265.3	266.3	273.2	262.4	257.4	254.4	249.3	251.8	250.2	231.9	233.3	247.5	251.8	246.0	266.0	243.6	213.4	214.0	-9999.0