NASA Surface meteorology and Solar Energy

**Monthly Averaged Radiation Incident On An Equator-Pointed Tilted Surface (kWh/m²/day)**
Lat 43 Lon 133	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual Average
SSE HRZ	2.28	3.31	4.42	4.92	5.38	5.34	4.58	4.36	4.04	3.11	2.18	1.90	3.81
K	0.61	0.63	0.60	0.52	0.49	0.45	0.40	0.43	0.50	0.53	0.53	0.58	0.52
Diffuse	0.51	0.73	1.19	1.86	2.29	2.49	2.41	2.09	1.56	1.06	0.70	0.48	1.45
Direct	5.52	6.40	6.47	5.26	4.94	4.46	3.42	3.76	4.62	4.71	4.33	4.77	4.88
Tilt 0	2.27	3.24	4.37	4.90	5.34	5.36	4.56	4.34	3.97	3.08	2.16	1.90	3.79
Tilt 28	4.12	4.90	5.55	5.28	5.31	5.10	4.43	4.46	4.60	4.22	3.51	3.60	4.59
Tilt 43	4.78	5.40	5.75	5.11	4.93	4.66	4.09	4.23	4.61	4.51	3.96	4.23	4.68
Tilt 58	5.15	5.58	5.63	4.68	4.33	4.03	3.58	3.82	4.38	4.55	4.18	4.59	4.54
Tilt 90	4.87	4.86	4.36	3.16	2.66	2.45	2.25	2.50	3.21	3.81	3.82	4.42	3.52
OPT	5.22	5.58	5.75	5.28	5.43	5.37	4.59	4.50	4.64	4.56	4.19	4.68	4.98
OPT ANG	68.0	59.0	45.0	26.0	13.0	5.00	9.00	19.0	36.0	53.0	64.0	70.0	38.8

**Minimum Available Insolation Over A Consecutive-day Period (%)**
Lat 43 Lon 133	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Min/1 day	18.4	31.1	28.2	11.7	15.6	10.2	7.42	4.81	9.90	8.03	19.2	21.5
Min/3 day	38.3	47.7	42.0	38.8	27.5	19.7	19.8	19.9	28.1	31.9	43.8	50.3
Min/7 day	62.6	70.9	66.6	55.8	49.2	40.1	41.5	49.8	46.1	51.5	63.8	69.0
Min/14 day	69.3	81.4	81.7	60.7	61.3	51.8	63.0	62.3	58.2	68.4	76.2	77.5
Min/21 day	74.9	82.9	82.6	70.8	72.9	68.0	67.5	73.9	76.1	78.6	80.4	83.8
Min/Month	87.7	87.6	90.2	84.5	82.8	81.8	79.6	72.2	85.1	79.7	92.2	87.3

**Available Surplus Insolation Over A Consecutive-day Period (%)**
Lat 43 Lon 133	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Max/1 day	144	152	155	163	164	171	187	181	164	165	166	136
Max/3 day	138	139	144	157	156	159	182	176	156	156	159	129
Max/7 day	126	129	138	141	141	148	163	167	147	144	148	127
Max/14 day	118	121	122	127	140	143	145	138	134	133	127	116
Max/21 day	115	116	117	120	132	127	138	127	123	130	122	111
Max/Month	107	108	110	114	119	120	126	117	115	118	112	111

**Monthly Averaged Wind Speed At 50 m Above The Surface Of The Earth (m/s)**
Lat 43 Lon 133	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual Average
10-year Average	6.87	6.56	5.49	5.45	4.71	4.33	4.26	4.19	4.57	5.85	6.41	6.87	5.45

**Minimum And Maximum Difference From Monthly Averaged Wind Speed At 50 m (%)**
Lat 43 Lon 133	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual Average
Minimum	-9	-12	-8	-14	-22	-9	-9	-13	-11	-11	-7	-6	-11
Maximum	9	9	9	12	15	9	10	11	11	10	8	6	10

It is recommended that users of these wind data review the SSE Methodology. The user may wish to correct for biases as well as local effects within the selected grid region.

All height measurements are from the soil, water, or ice/snow surface instead of "effective" surface, which is usually taken to be near the tops of vegetated canopies.

Difference Between The Average Wind Speed At 10 m Above The Surface Of The Earth And The Average Wind speed At 50 m Above The Surface Of The Earth (%)
***Vegetation type*** "Airport": flat rough grass
Lat 43 Lon 133	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Annual Average
10-year Average	-20	-21	-20	-20	-20	-21	-20	-21	-20	-20	-20	-20	-20