Many rough surface emission models have also been developed based on the theoretical and empirical methods.
1	Many	many	ADJ	JJ	Degree=Pos	5	amod	5:amod	Discourse=joint-other_m:65->43:2|Entity=(128-abstract-new-cf1-5-coref
2	rough	rough	ADJ	JJ	Degree=Pos	3	amod	3:amod	Entity=(129-abstract-new-cf3-3-sgl(130-place-new-cf4-2-sgl
3	surface	surface	NOUN	NN	Number=Sing	4	compound	4:compound	Entity=130)
4	emission	emission	NOUN	NN	Number=Sing	5	compound	5:compound	Entity=129)
5	models	model	NOUN	NNS	Number=Plur	9	nsubj:pass	9:nsubj:pass	Entity=128)
6	have	have	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	9	aux	9:aux	_
7	also	also	ADV	RB	_	9	advmod	9:advmod	_
8	been	be	AUX	VBN	Tense=Past|VerbForm=Part	9	aux:pass	9:aux:pass	_
9	developed	develop	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	0:root	_
10	based	base	VERB	VBN	Tense=Past|VerbForm=Part	9	advcl	9:advcl	Discourse=mode-means:66->65:0
11	on	on	ADP	IN	_	16	case	16:case	_
12	the	the	DET	DT	Definite=Def|PronType=Art	16	det	16:det	Entity=(131-abstract-new-cf2-5-sgl
13	theoretical	theoretical	ADJ	JJ	Degree=Pos	16	amod	16:amod	_
14	and	and	CCONJ	CC	_	15	cc	15:cc	_
15	empirical	empirical	ADJ	JJ	Degree=Pos	13	conj	13:conj:and|16:amod	_
16	methods	method	NOUN	NNS	Number=Plur	10	obl	10:obl:on	Entity=131)|SpaceAfter=No
17	.	.	PUNCT	.	_	9	punct	9:punct	_
