The Barchan Dunes of Brazil

Images

Thursday, 13 July 2023

Former NASA astronaut Jack Fischer captured this photograph of Lagoa dos Barros and crescent-shaped barchan dunes on the Atlantic coastline of southern Brazil on July 9, 2017, while aboard the International Space Station.

Planetary Positions

27.12.2024 at 08:57:09 UTC

Planet	Longitude
The Sun	06 Cap 05' 47"
The Moon	24 Sco 27' 44"
Mercury	14 Sag 15' 13"
Venus	22 Aqu 41' 43"
Mars	03 Leo 19' 13" R
Jupiter	13 Gem 43' 54" R
Saturn	14 Pis 11' 20"
Uranus	23 Tau 45' 22" R
Neptune	27 Pis 14' 24"
Pluto	00 Aqu 55' 29"

Solar Status

BZ Status:	-1
Proton Density:	4.37
Proton Speed:	348.9 k/sec
KP Status:	0.33

Type	Dec 27	Dec 28	Dec 29
Active	40%	25%	10%
Minor	15%	10%	5%
Moderate	1%	1%	1%
Strong	1%	1%	1%
Kp Index Prediction
00-03UT	3.67	2.67	1.67
03-06UT	2.67	2.33	1.33
06-09UT	2.33	2.00	1.33
09-12UT	2.33	1.67	1.33
12-15UT	2.00	2.00	1.33
15-18UT	1.67	2.00	1.33
18-21UT	2.00	2.00	1.67
21-00UT	2.33	2.33	1.67
Solar Activity
Solar activity reached high levels this period. The largest flare of the period was an M7.3/2b at 26/0315 UTC, from Region 3938 (N21E40, Eac/beta-gamma-delta). Regions 3928 (S14W35, Eac/beta-gamma), 3936 (N14W01, Ekc/beta), and 3938 (N21E40, Eac/beta-gamma-delta) experienced substantial growth. The remaining regions were either stable or in decay.
Solar Wind
Solar wind parameters were largely consistent throughout the period. Total field was at nominal background levels, never reaching above 5 nT, with Bz varying -2 and 3 nT. Solar wind speeds started the period around 450 km/s and decreased to around 350 km/s. The phi angle remained negative.
Energetic Particle
The greater than 10 MeV proton flux remained elevated above background but well below the S1 threshold, mostly due to activity that erupted on the far side of the Sun over 20 Dec and potentially extended by recent eruptive activity. The greater than 2 MeV electron flux reached moderate levels.

The Barchan Dunes of Brazil

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